/* --- 1. THEMES & VARIABLES --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
    /* Light Theme (Earth-Drawn) */
    --background: #FDFCF8;       
    --foreground: #2C2C24;       
    --primary: #5D7052;          
    --primary-fg: #F3F4F1;       
    --secondary: #C18C5D;        
    --secondary-fg: #FFFFFF;     
    --accent: #E6DCCD;           
    --accent-fg: #4A4A40;        
    --muted: #F0EBE5;            
    --muted-fg: #78786C;         
    --border: #DED8CF;           
    --destructive: #A85448;      
    --hover-bg: #E6DCCD;
    --edit-color:#000000;
    --version-color:rgb(178, 243, 255);
    
    /* Priority Tag Colors (Light) */
    --priority-important: #F87171;
    --priority-routine: #FBBF24;
    --priority-normal: #4ADE80;
    --priority-important-bg: rgba(248, 113, 113, 0.12);
    --priority-routine-bg: rgba(251, 191, 36, 0.12);
    --priority-normal-bg: rgba(74, 222, 128, 0.06);
    
    /* Nav & Shadows */
    --nav-bg: rgba(253, 252, 248, 0.7);
    --border-subtle: rgba(222, 216, 207, 0.5);
    --ring-color: rgba(93, 112, 82, 0.3);
    --shadow-soft: 0 4px 12px rgba(93, 112, 82, 0.1);
    --shadow-deep: 0 6px 24px -4px rgba(93, 112, 82, 0.25);
    --shadow-float: 0 20px 40px -10px rgba(193, 140, 93, 0.2);
    --shadow-nav: 0 4px 20px -2px rgba(93, 112, 82, 0.15);
}

body.dark-theme {
    /* Dark Theme (Premium Tech) */
    --background: #050506;       
    --foreground: #EDEDEF;       
    --primary: #5E6AD2;          
    --primary-fg: #FFFFFF;       
    --secondary: rgba(255,255,255,0.05); 
    --secondary-fg: #EDEDEF;     
    --accent: #0a0a0c;           
    --accent-fg: #8A8F98;        
    --muted: #0F0F12;            
    --muted-fg: rgba(255,255,255,0.60);  
    --border: rgba(255,255,255,0.06);    
    --destructive: #E5484D;      
    --hover-bg: rgba(255,255,255,0.08);
    --edit-color:#ffffff;
    --version-color:#ffe4a6;

    /* Priority Tag Colors (Dark) */
    --priority-important: #DC2626;
    --priority-routine: #D97706;
    --priority-normal: #16A34A;
    --priority-important-bg: rgba(220, 38, 38, 0.15);
    --priority-routine-bg: rgba(217, 119, 6, 0.15);
    --priority-normal-bg: rgba(22, 163, 74, 0.05);

    /* Nav & Shadows */
    --nav-bg: rgba(5, 5, 6, 0.7);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --ring-color: rgba(94, 106, 210, 0.3);
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-deep: 0 0 15px rgba(94,106,210,0.3); 
    --shadow-float: 0 8px 30px rgba(0, 0, 0, 0.8);
    --shadow-nav: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
}


/* --- 2. GLOBAL RESET & TYPOGRAPHY --- */
* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; 
    -webkit-tap-highlight-color: transparent; /* Removes Android grey tap flash */
}
body { display: flex; flex-direction: column; min-height: 100vh; background-color: var(--background); color: var(--foreground); overflow-x: hidden; overflow-y: auto; transition: background-color 0.4s ease, color 0.4s ease;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    overscroll-behavior-y: none; /* Prevents Android pull-to-refresh bounce */
}

input, textarea, [contenteditable="true"] {
    -webkit-touch-callout: default;
    -webkit-user-select: auto;
    -khtml-user-select: auto;
    -moz-user-select: auto;
    -ms-user-select: auto;
    user-select: auto;
}

/* --- 3. NAVIGATION BAR (Glassmorphism) --- */
.nav-wrapper { padding: 0.8rem 1rem; position: relative; z-index: 50; }
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 0.3rem 0.8rem; border-radius: 9999px; background-color: var(--nav-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--border-subtle); box-shadow: var(--shadow-nav); transition: all 0.3s ease; }

.nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 1rem; text-decoration: none; color: var(--foreground); }
.nav-logo { display: flex; height: 32px; width: 32px; align-items: center; justify-content: center; border-radius: 9999px; background-color: var(--primary); color: var(--primary-fg); font-weight: bold; font-size: 1rem; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link { font-size: 0.9rem; font-weight: 500; color: var(--foreground); text-decoration: none; padding: 6px 14px; border-radius: 9999px; transition: all 0.3s ease; outline: none; }
.nav-link:hover { color: var(--primary); background: var(--hover-bg); }
.nav-link:focus-visible { box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring-color); }

/* New Settings Icon with Rotation */
.settings-icon { display: flex; align-items: center; justify-content: center; background: transparent; border: none; cursor: pointer; color: var(--foreground); padding: 6px; border-radius: 50%; transition: transform 0.5s ease, color 0.3s ease, background 0.3s ease; }
.settings-icon:hover { transform: rotate(90deg); color: var(--primary); background: var(--hover-bg); }
.settings-icon svg { width: 18px; height: 18px; stroke: currentColor; stroke-width: 2; fill: none; stroke-linecap: round; stroke-linejoin: round; }

.mobile-menu-btn { display: none; background: transparent; border: none; font-size: 1.5rem; color: var(--foreground); cursor: pointer; padding: 5px; }
.mobile-dropdown { position: absolute; top: 100%; left: 1rem; right: 1rem; margin-top: 0.5rem; background-color: var(--background); border-radius: 2rem; border: 1px solid var(--border-subtle); box-shadow: var(--shadow-float); padding: 1.5rem; display: none; flex-direction: column; gap: 8px; z-index: 40; }
.mobile-dropdown.active { display: flex; animation: popIn 0.3s ease forwards; }

@media (max-width: 850px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
}

/* --- 4. APP LAYOUT --- */
#app-container { flex-grow: 1; display: flex; overflow: hidden; border-top: 1px solid var(--border); }

/* --- 5. BOLD ANIMATIONS --- */
@keyframes popIn { 0% { opacity: 0; transform: translateY(10px) scale(0.95); } 100% { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes slideOutFade { 0% { opacity: 1; transform: scale(1) translateX(0); max-height: 100px; padding: 14px 20px; margin-bottom: 15px; } 100% { opacity: 0; transform: scale(0.8) translateX(50px); max-height: 0; padding: 0; margin-bottom: 0; border: none; overflow: hidden; } }
.deleting { animation: slideOutFade 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards !important; pointer-events: none; }

/* --- 6. SIDEBAR --- */
#sidebar { width: 280px; min-width: 280px; background-color: var(--muted); padding: 20px; display: flex; flex-direction: column; border-right: 1px solid var(--border); transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), min-width 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s, background-color 0.4s, border-color 0.4s; overflow: hidden; }
#sidebar.collapsed { width: 0; min-width: 0; padding-left: 0; padding-right: 0; opacity: 0; border-right: none; }
#sidebar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; font-weight: 600; font-size: 1.2rem; }
.header-actions { display: flex; gap: 8px; }
.chat-list-item { padding: 12px; border-radius: 8px; cursor: pointer; margin-bottom: 5px; font-weight: 500; color: var(--accent-fg); transition: all 0.3s ease; animation: popIn 0.4s ease forwards; }
.chat-list-item:hover { background: var(--hover-bg); transform: translateY(-2px); box-shadow: var(--shadow-soft); }
.chat-list-item.active { background: var(--primary); color: var(--primary-fg); box-shadow: var(--shadow-deep); }

/* Stretch chat list to allow double-clicking empty space */
#chat-list { flex-grow: 1; overflow-y: auto; padding-bottom: 20px; }

/* Inline Editing State */
.chat-list-item[contenteditable="true"] {
    background: var(--background);
    border: 1px solid var(--primary);
    box-shadow: 0 0 0 2px var(--ring-color);
    outline: none;
    cursor: text;
    user-select: text;
    color: var(--edit-color);
}

/* --- 7. BUTTONS --- */
button { transition: all 0.3s ease; }
.action-btn { background: var(--secondary); border: 1px solid var(--border); padding: 8px 12px; border-radius: 8px; cursor: pointer; color: var(--secondary-fg); font-weight: 500; box-shadow: var(--shadow-soft); }
.action-btn:hover { transform: scale(1.05); box-shadow: var(--shadow-deep); border-color: var(--primary); }
.action-btn:active { transform: scale(0.95); }
#send-btn { background: transparent; border: none; color: var(--primary); font-weight: bold; cursor: pointer; padding: 10px 15px; border-radius: 50px; }
#send-btn:hover { background: var(--secondary); transform: scale(1.05); }

/* --- 8. MAIN CHAT AREA --- */
#main-area { flex-grow: 1; display: flex; flex-direction: column; background: var(--background); transition: background-color 0.4s; }
#chat-header { padding: 20px 30px; border-bottom: 1px solid var(--border); font-size: 1.2rem; font-weight: 600; transition: border-color 0.4s; }
#chat-box { flex-grow: 1; padding: 30px; overflow-y: auto; display: flex; flex-direction: column; gap: 15px; }

/* Create Group Button */
.create-group-btn {
    background: var(--primary); color: var(--primary-fg); border: none; border-radius: 8px; padding: 0;
    display: grid; align-items: center; justify-items: center; cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden; white-space: nowrap; width: 120px; height: 32px; font-size: 0.85rem; font-weight: bold;
}
.create-group-btn .btn-text, .create-group-btn .btn-icon {
    grid-area: 1 / 1;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.create-group-btn .btn-text {
    opacity: 1; transform: translateY(0);
}
.create-group-btn .btn-icon {
    opacity: 0; transform: translateY(20px); font-size: 1.2rem; line-height: 1;
}
.create-group-btn:hover { filter: brightness(1.1); }
.create-group-btn:hover .btn-text { opacity: 0; transform: translateY(-20px); }
.create-group-btn:hover .btn-icon { opacity: 1; transform: translateY(0); }


/* --- 9. MESSAGES --- */
.message-wrapper { display: flex; justify-content: flex-end; align-items: center; gap: 10px; animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards; cursor: context-menu; transform-origin: right center; }
.message-wrapper.other-user { justify-content: flex-start; transform-origin: left center; }
.message { background: var(--primary); color: var(--primary-fg); padding: 14px 20px; border-radius: 20px 20px 0px 20px; max-width: 70%; line-height: 1.5; box-shadow: var(--shadow-soft); transition: all 0.3s ease; border: 1px solid transparent; word-wrap: break-word; white-space: pre-wrap; }
.message-wrapper.other-user .message { background: var(--muted); color: var(--foreground); border-radius: 20px 20px 20px 0px; border: 1px solid var(--border); }
.message-wrapper:hover .message, .message-wrapper:hover .file-block { filter: brightness(0.95); box-shadow: var(--shadow-float); }
.message-wrapper.selected .message, .message-wrapper.selected .file-block { background: var(--accent); border: 1px solid var(--primary); box-shadow: var(--shadow-deep); }

.msg-text-content {
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    max-height: var(--full-height, none);
}
.msg-text-content.clamped {
    max-height: 2.8em; /* Roughly 2 lines */
    -webkit-mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
    mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
}
.show-more-btn {
    background: transparent;
    border: none;
    color: inherit;
    opacity: 0.8;
    font-size: 0.85rem;
    font-weight: bold;
    cursor: pointer;
    margin-top: 5px;
    padding: 0;
    text-decoration: underline;
    display: block;
}
.show-more-btn:hover {
    opacity: 1;
}

/* --- 10. INPUT AREA --- */
#input-area { padding: 20px 30px; background: var(--background); transition: background-color 0.4s; }
.input-container { display: flex; background: var(--muted); border: 1px solid var(--border); border-radius: 24px; padding: 8px 10px 8px 20px; align-items: flex-end; transition: all 0.3s ease; }
.input-container:focus-within { border-color: var(--primary); box-shadow: var(--shadow-deep); }
#msg-input { flex-grow: 1; border: none; background: transparent; padding: 12px 0; outline: none; font-size: 1rem; color: var(--foreground); resize: none; overflow-y: hidden; max-height: 150px; line-height: 1.5; font-family: inherit; word-wrap: break-word; white-space: pre-wrap; }
#msg-input::placeholder { color: var(--muted-fg); }
#msg-input::-webkit-scrollbar { width: 6px; }
#msg-input::-webkit-scrollbar-thumb { background-color: var(--border); border-radius: 10px; }

/* --- 11. MENUS & MULTI-SELECT --- */
#context-menu { position: fixed; background: var(--nav-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-radius: 12px; box-shadow: var(--shadow-float); border: 1px solid var(--border); padding: 5px 0; min-width: 150px; z-index: 100000; display: none; }
.context-menu-item { padding: 10px 15px; cursor: pointer; font-size: 0.95rem; font-weight: 500; color: var(--foreground); transition: background 0.3s ease; }
.context-menu-item:hover { background: var(--hover-bg); }
.context-menu-item.danger { color: var(--destructive); }
.context-menu-item.has-submenu { position: relative; }
.context-submenu { position: absolute; left: 100%; top: -5px; background: var(--nav-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-deep); padding: 5px 0; min-width: 150px; display: none; z-index: 100001; }
.context-menu-item.has-submenu:hover .context-submenu { display: block; animation: popIn 0.2s ease; }
.context-submenu-item { padding: 10px 15px; cursor: pointer; font-size: 0.95rem; font-weight: 500; color: var(--foreground); transition: background 0.3s ease; }
.context-submenu-item:hover { background: var(--hover-bg); }

#multi-select-bar { display: none; position: absolute; top: 0; left: 280px; right: 0; background: var(--accent); border-bottom: 1px solid var(--border); padding: 15px 30px; align-items: center; justify-content: space-between; z-index: 100; box-shadow: var(--shadow-deep); animation: popIn 0.3s ease forwards; }
#delete-selected-btn { background: var(--destructive); color: white; border: none; padding: 8px 16px; border-radius: 8px; cursor: pointer; font-weight: bold; }
#cancel-select-btn { background: transparent; color: var(--foreground); border: 1px solid var(--border); padding: 8px 16px; border-radius: 8px; cursor: pointer; font-weight: 500;}

/* --- 12. ATTACHMENT MENU --- */
#attach-btn { background: transparent; border: none; color: var(--muted-fg); font-size: 1.8rem; line-height: 1.8; cursor: pointer; padding: 0 15px 0 5px; transition: all 0.3s ease; }
#attach-btn:hover:not(:disabled) { color: var(--primary); }
#attach-btn .icon {
    display: inline-block; /* Transforms only work on block/inline-block elements */
    transition: all 0.3s ease;
}
#attach-btn:hover:not(:disabled) .icon {
    transform: scale(1.1) rotate(90deg);
}
#attach-btn:disabled { opacity: 0.5; cursor: not-allowed; }

#attach-menu { position: absolute; bottom: 80px; left: 30px; background: var(--muted); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-float); display: none; flex-direction: column; overflow: hidden; transform-origin: bottom left; animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards; z-index: 100; min-width: 150px; }
.attach-option { padding: 12px 20px; display: flex; align-items: center; gap: 10px; cursor: pointer; color: var(--foreground); transition: background 0.3s; font-weight: 500; font-size: 0.95rem; }
.attach-option:hover { background: var(--hover-bg); }

/* --- 13. FILE BLOCK UI & HOVER ANIMATIONS --- */
.file-block { display: flex; flex-direction: column; min-width: 250px; max-width: 320px; height: 64px; background: var(--muted); border-radius: 12px; overflow: hidden; border: 1px solid var(--border); cursor: pointer; color: var(--foreground); transition: all 0.3s ease; box-shadow: var(--shadow-soft); position: relative; }
.file-block:hover { border-color: var(--primary); box-shadow: var(--shadow-float); transform: translateY(-2px); }

.file-content-default { display: flex; height: 100%; width: 100%; transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); opacity: 1; transform: translateY(0); }
.file-logo { width: 20%; height: 100%; display: flex; justify-content: center; align-items: center; background: var(--accent); font-size: 1.5rem; border-right: 1px solid var(--border); }
.file-info-area { width: 80%; height: 100%; display: flex; flex-direction: column; }
.file-type-label { height: 50%; display: flex; align-items: center; padding: 0 15px; font-weight: 600; font-size: 0.9rem; color: var(--accent-fg); text-transform: capitalize; border-bottom: 1px solid var(--border); }
.file-name-row { height: 50%; display: flex; align-items: center; padding: 0 15px; font-size: 0.85rem; color: var(--foreground); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; gap: 6px; }
.file-size-label { color: var(--muted-fg); font-weight: normal; font-size: 0.8rem; }

.file-content-hover { position: absolute; top: 0; left: 0; width: 100%; height: 100%; display: flex; opacity: 0; transform: translateY(100%); transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); background: var(--muted); }
.file-block:hover .file-content-default { opacity: 0; transform: translateY(-100%); }
.file-block:hover .file-content-hover { opacity: 1; transform: translateY(0); }

.file-download-btn { width: 20%; display: flex; justify-content: center; align-items: center; background: var(--primary); color: var(--primary-fg); border-right: 1px solid var(--border); transition: filter 0.2s; text-decoration: none; }
.file-download-btn:hover { filter: brightness(1.2); }
.file-download-btn svg { width: 22px; height: 22px; stroke: currentColor; stroke-width: 2.5; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.file-open-area { width: 80%; display: flex; align-items: center; justify-content: center; font-weight: 600; color: var(--primary); font-size: 1rem; transition: background 0.2s; }
.file-open-area:hover { background: var(--hover-bg); }

/* --- 14. AUTHENTICATION PAGES --- */
.auth-wrapper { flex-grow: 1; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-card { background: var(--nav-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid var(--border-subtle); box-shadow: var(--shadow-float); border-radius: 24px; padding: 40px; width: 100%; max-width: 400px; display: flex; flex-direction: column; gap: 24px; animation: popIn 0.5s ease; }
.auth-title { font-size: 1.8rem; font-weight: 600; text-align: center; color: var(--foreground); }

.auth-form { display: flex; flex-direction: column; gap: 20px; }
.auth-input-group { display: flex; flex-direction: column; gap: 8px; }
.auth-label { font-size: 0.9rem; font-weight: 500; color: var(--accent-fg); }
.auth-input { background: var(--muted); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; color: var(--foreground); font-size: 1rem; transition: all 0.3s ease; outline: none; }
.auth-input:focus { border-color: var(--primary); box-shadow: var(--shadow-deep); }

.auth-btn { background: var(--primary); color: var(--primary-fg); border: none; padding: 14px; border-radius: 12px; font-weight: 600; font-size: 1rem; cursor: pointer; transition: all 0.3s ease; box-shadow: var(--shadow-soft); }
.auth-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-deep); filter: brightness(1.1); }

.auth-footer { text-align: center; font-size: 0.9rem; color: var(--accent-fg); }
.auth-link { color: var(--primary); text-decoration: none; font-weight: 600; transition: color 0.3s; }
.auth-link:hover { text-decoration: underline; }

.auth-error { background: rgba(229, 72, 77, 0.1); color: var(--destructive); border: 1px solid var(--destructive); padding: 12px; border-radius: 12px; font-size: 0.9rem; text-align: center; font-weight: 500; }

/* --- 15. HOME DASHBOARD --- */
.home-wrapper { 
    padding: 40px; 
    width: 100%; 
    display: flex; 
    flex-direction: column; 
    align-items: center;
    gap: 40px; 
    overflow-y: auto; 
    animation: popIn 0.5s ease forwards;
}

.home-header { display: flex; flex-direction: column; gap: 8px; width: 100%; max-width: 1200px; }
.home-title { font-size: 2.5rem; font-weight: 600; color: var(--foreground); }
.home-subtitle { font-size: 1.1rem; color: var(--accent-fg); }

/* The Grid (Max 3 Columns) */
.feature-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 24px; 
    width: 100%;
    max-width: 1200px;
}

@media (min-width: 1024px) {
    .feature-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Glassmorphic Cards */
.feature-card { 
    background: var(--nav-bg); 
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle); 
    border-radius: 24px; 
    padding: 32px; 
    display: flex; 
    flex-direction: column; 
    gap: 16px; 
    cursor: pointer; 
    text-decoration: none; 
    color: var(--foreground); 
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
    box-shadow: var(--shadow-soft); 
}

.feature-card:hover { 
    transform: translateY(-6px); 
    box-shadow: var(--shadow-float); 
    border-color: var(--primary); 
}

.feature-icon { 
    width: 56px; 
    height: 56px; 
    border-radius: 16px; 
    background: var(--primary); 
    color: var(--primary-fg); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    font-size: 1.8rem; 
    margin-bottom: 8px; 
    box-shadow: var(--shadow-soft);
}

.feature-title { font-size: 1.4rem; font-weight: 600; }
.feature-desc { font-size: 0.95rem; color: var(--accent-fg); line-height: 1.6; }


/* --- 16. NOTION-STYLE TODO UI --- */
.todo-main-wrapper { width: 100%; max-width: 800px; padding: 40px 20px; display: flex; flex-direction: column; gap: 30px; animation: popIn 0.4s ease forwards; }

.todo-top-bar { display: flex; gap: 10px; align-items: center; }
.todo-dropdown { flex-grow: 1; background: var(--nav-bg); border: 1px solid var(--border); border-radius: 12px; padding: 12px 16px; font-size: 1.2rem; font-weight: 600; color: var(--foreground); outline: none; box-shadow: var(--shadow-soft); cursor: pointer; }
.todo-dropdown:focus { border-color: var(--primary); }

/* Bulk Import UI */
.info-tooltip-wrapper { display: inline-flex; align-items: center; justify-content: center; position: relative; cursor: help; }
.info-icon { background: transparent; color: var(--muted-fg); border: 1.5px solid var(--muted-fg); border-radius: 50%; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: bold; transition: all 0.2s; font-family: monospace; }
.info-tooltip-wrapper:hover .info-icon { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }

.info-tooltip-content {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--nav-bg);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    padding: 15px;
    border-radius: 12px;
    box-shadow: var(--shadow-float);
    z-index: 1000;
    width: max-content;
    max-width: 280px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}
.info-tooltip-wrapper:hover .info-tooltip-content {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(5px);
}
.info-tooltip-content p {
    margin-bottom: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--foreground);
    text-align: center;
}

.todo-tree-container { display: flex; flex-direction: column; gap: 4px; }

/* The Dashed Add Box */
.add-task-box { border: 2px dashed var(--border); border-radius: 12px; padding: 16px; text-align: center; color: var(--muted-fg); font-weight: 600; cursor: pointer; transition: all 0.2s ease; margin-top: 10px; }
.add-task-box:hover { border-color: var(--primary); color: var(--primary); background: var(--hover-bg); transform: translateY(-2px); box-shadow: var(--shadow-soft); }

/* --- TODO EXPORT BUTTON --- */
#export-todo-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: none;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-float);
    z-index: 1000;
    background: var(--primary);
    color: var(--primary-fg);
    border: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}
#export-todo-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-deep);
    filter: brightness(1.1);
}
@media (max-width: 768px) { #export-todo-btn { bottom: 20px; right: 20px; width: 48px; height: 48px; } }

/* The Task Row */
.task-wrapper { display: flex; flex-direction: column; }
.task-row { display: flex; align-items: center; padding: 8px 12px; border-radius: 8px; transition: background 0.2s; position: relative; }
.task-row:hover { background: var(--hover-bg); }

.task-checkbox { width: 20px; height: 20px; border-radius: 6px; border: 2px solid var(--border); margin-right: 12px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.task-checkbox:hover { border-color: var(--primary); }
.task-checkbox.checked { background: var(--primary); border-color: var(--primary); }
.task-checkbox.checked::after { content: '✓'; color: var(--primary-fg); font-size: 0.8rem; font-weight: bold; }

.task-content { flex-grow: 1; display: flex; align-items: center; gap: 8px; cursor: pointer; position: relative; }
.task-title { font-size: 1rem; color: var(--foreground); transition: color 0.2s; }
.task-row.completed .task-title { text-decoration: line-through; color: var(--muted-fg); }

/* Hover Actions (+, Edit, Delete) */
.task-actions { display: flex; gap: 4px; opacity: 0; transition: opacity 0.2s; }
.task-row:hover .task-actions { opacity: 1; }
.task-icon-btn { background: var(--muted); border: 1px solid var(--border); border-radius: 6px; width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--foreground); font-size: 0.9rem; transition: all 0.2s; }
.task-icon-btn:hover { border-color: var(--primary); color: var(--primary); transform: scale(1.1); }
.task-icon-btn.danger:hover { border-color: var(--destructive); color: var(--destructive); }

/* Description Tooltip */
.task-desc-icon { color: var(--muted-fg); font-size: 0.8rem; background: var(--muted); padding: 2px 6px; border-radius: 4px; cursor: help; }
.task-desc-tooltip { position: absolute; left: 0; top: 100%; background: var(--nav-bg); backdrop-filter: blur(12px); border: 1px solid var(--border); padding: 12px; border-radius: 8px; box-shadow: var(--shadow-float); z-index: 10; font-size: 0.9rem; color: var(--foreground); width: max-content; max-width: 300px; opacity: 0; pointer-events: none; transition: opacity 0.2s; margin-top: 4px; }
.task-content:hover .task-desc-tooltip { opacity: 1; pointer-events: auto; }

/* The Input Form */
.task-input-form { background: var(--nav-bg); backdrop-filter: blur(12px); border: 1px solid var(--primary); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 10px; box-shadow: var(--shadow-deep); margin: 8px 0; animation: popIn 0.2s ease forwards; }
.task-title-input { border: none; background: transparent; font-size: 1.1rem; color: var(--foreground); outline: none; font-weight: 500; resize: none; overflow-y: auto; max-height: 80px; line-height: 1.5; font-family: inherit; word-wrap: break-word; white-space: pre-wrap; }
.task-desc-input { border: none; background: transparent; font-size: 0.9rem; color: var(--muted-fg); outline: none; resize: none; overflow-y: auto; max-height: 65px; line-height: 1.5; font-family: inherit; word-wrap: break-word; white-space: pre-wrap; }
.task-title-input::-webkit-scrollbar, .task-desc-input::-webkit-scrollbar { width: 6px; }
.task-title-input::-webkit-scrollbar-thumb, .task-desc-input::-webkit-scrollbar-thumb { background-color: var(--border); border-radius: 10px; }
.task-input-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; border-top: 1px solid var(--border-subtle); padding-top: 10px; }
.save-task-btn { background: var(--primary); color: var(--primary-fg); border: none; padding: 6px 16px; border-radius: 6px; cursor: pointer; font-weight: bold; }
.cancel-task-btn { background: transparent; color: var(--foreground); border: 1px solid var(--border); padding: 6px 16px; border-radius: 6px; cursor: pointer; }

/* Child Tasks Indentation & Animation */
.task-children { margin-left: 28px; border-left: 1px solid var(--border-subtle); padding-left: 8px; display: grid; grid-template-rows: 1fr; transition: grid-template-rows 0.25s cubic-bezier(0.4, 0, 0.2, 1); }
.task-children-inner { overflow: hidden; display: flex; flex-direction: column; min-height: 0; opacity: 1; transform: translateY(0); transition: opacity 0.2s ease-out, transform 0.25s cubic-bezier(0.4, 0, 0.2, 1); }
.task-wrapper.collapsed > .task-children { grid-template-rows: 0fr; }
.task-wrapper.collapsed > .task-children > .task-children-inner { opacity: 0; transform: translateY(-10px); pointer-events: none; }

/* Toggle Icon */
.task-toggle-icon { display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px; margin-right: 6px; font-size: 0.7rem; color: var(--muted-fg); transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1); transform: rotate(90deg); flex-shrink: 0; }
.task-wrapper.collapsed > .task-row > .task-content .task-toggle-icon { transform: rotate(0deg); }

/* --- TODO DRAG & DROP --- */
.task-wrapper.dragging { opacity: 0.5; }
.task-row.drag-over-before { box-shadow: 0 -2px 0 var(--primary); z-index: 10; }
.task-row.drag-over-after { box-shadow: 0 2px 0 var(--primary); z-index: 10; }
.task-row.drag-over-child { background: var(--hover-bg); box-shadow: inset 0 0 0 2px var(--primary); z-index: 10; }

/* --- QUICK ADD TOAST --- */
#quick-add-toast { position: fixed; bottom: 40px; left: 50%; transform: translateX(-50%) translateY(20px); background: var(--primary); color: var(--primary-fg); padding: 10px 20px; border-radius: 20px; font-size: 0.95rem; font-weight: 500; opacity: 0; pointer-events: none; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); z-index: 1000; box-shadow: var(--shadow-deep); display: flex; align-items: center; gap: 8px; }
#quick-add-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* --- 17. DIARY & CALENDAR UI --- */
.calendar-widget { background: var(--nav-bg); border: 1px solid var(--border); border-radius: 16px; padding: 20px; box-shadow: var(--shadow-soft); display: flex; flex-direction: column; gap: 15px; }
.calendar-header { display: flex; justify-content: space-between; align-items: center; font-weight: bold; font-size: 1.1rem; color: var(--foreground); }
.cal-nav-btn { background: transparent; border: none; cursor: pointer; color: var(--accent-fg); font-size: 1.2rem; transition: color 0.2s; padding: 4px; }
.cal-nav-btn:hover { color: var(--primary); }

.calendar-days-header { display: grid; grid-template-columns: repeat(7, 1fr); text-align: center; font-size: 0.8rem; font-weight: 600; color: var(--muted-fg); margin-bottom: 5px; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; }
.cal-day { aspect-ratio: 1; display: flex; align-items: center; justify-content: center; border-radius: 50%; font-size: 0.9rem; font-weight: 500; color: var(--foreground); cursor: pointer; transition: all 0.2s ease; border: 1px solid transparent; }
.cal-day:hover:not(.empty) { border-color: var(--primary); background: var(--hover-bg);color: var(--primary); }
.cal-day.active { background: var(--primary); color: var(--primary-fg); box-shadow: var(--shadow-deep); font-weight: bold; }
.cal-day.empty { cursor: default; }
/* Highlight Today's Date */
.cal-day.today { border: 2px dashed var(--primary); font-weight: bold; }

.diary-text-content { font-family: 'Inter', sans-serif; font-size: 1.1rem; line-height: 1.8; color: var(--foreground); white-space: pre-wrap; padding: 10px; flex-grow: 1; }
.diary-textarea { width: 100%; flex-grow: 1; background: transparent; border: none; font-family: 'Inter', sans-serif; font-size: 1.1rem; line-height: 1.8; color: var(--foreground); outline: none; resize: none; padding: 10px; }
.diary-textarea::placeholder { color: var(--muted-fg); }

/* --- 18. REMINDERS (THREE-PANE UX) --- */
.reminders-layout { display: flex; height: calc(100vh - 60px); width: 100%; overflow: hidden; background: var(--background); }

.pane { display: flex; flex-direction: column; overflow-y: auto; padding: 20px; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
.pane-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; min-height: 40px; }

/* Left Pane */
.pane-left { width: 20%; min-width: 250px; background: var(--nav-bg); border-right: 1px solid var(--border); }
.cmd-k-btn { flex-grow: 1; display: flex; justify-content: space-between; background: var(--muted); border: 1px solid var(--border); padding: 8px 12px; border-radius: 8px; color: var(--muted-fg); font-size: 0.9rem; cursor: pointer; margin-right: 10px; }
.smart-filters { display: flex; flex-direction: column; gap: 4px; margin-bottom: 30px; }
.filter-box { display: flex; align-items: center; padding: 10px; border-radius: 8px; cursor: pointer; color: var(--foreground); font-weight: 500; transition: background 0.2s; }
.filter-box:hover { background: var(--hover-bg); }
.filter-box.active { background: var(--primary); color: var(--primary-fg); }
.filter-box .icon { margin-right: 12px; font-size: 1.2rem; }
.filter-box .badge { margin-left: auto; background: var(--accent); color: var(--primary-fg); font-size: 0.8rem; padding: 2px 8px; border-radius: 12px; }
.section-title { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; color: var(--muted-fg); margin-bottom: 10px; padding-left: 10px; }
.custom-list-item { padding: 8px 10px; border-radius: 6px; cursor: pointer; color: var(--foreground); margin-bottom: 2px; }
.custom-list-item:hover { background: var(--hover-bg); }
.custom-list-item.active { background: var(--muted); font-weight: bold; }

/* Middle Pane */
.pane-middle { flex: 1; min-width: 400px; padding: 40px 60px; }
.view-title { font-size: 2.5rem; font-weight: 800; color: var(--foreground); margin: 0; }
.nlp-input-wrapper { background: var(--nav-bg); border: 2px solid var(--border); border-radius: 12px; padding: 16px; margin-bottom: 30px; box-shadow: var(--shadow-soft); transition: border 0.3s; }
.nlp-input-wrapper:focus-within { border-color: var(--primary); box-shadow: var(--shadow-deep); }
#nlp-input { font-size: 1.2rem; color: var(--foreground); outline: none; min-height: 28px; white-space: pre-wrap; word-wrap: break-word; }
#nlp-input:empty:before { content: attr(data-placeholder); color: var(--muted-fg); pointer-events: none; }

.reminder-list { display: flex; flex-direction: column; gap: 8px; }
.reminder-row { display: flex; align-items: center; padding: 12px; border-radius: 8px; border-bottom: 1px solid var(--border-subtle); cursor: pointer; transition: background 0.2s; }
.reminder-row:hover { background: var(--hover-bg); border-bottom-color: transparent; }
.reminder-row.selected { background: var(--muted); border: 1px solid var(--border); }
.r-checkbox { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--border); margin-right: 16px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: 0.2s; }
.r-checkbox:hover { border-color: var(--primary); }
.r-checkbox.checked { background: var(--primary); border-color: var(--primary); }
.r-checkbox.checked::after { content: '✓'; color: var(--primary-fg); font-size: 0.9rem; font-weight: bold; }
.reminder-row.completed .r-content { text-decoration: line-through; opacity: 0.5; }
.r-content { flex-grow: 1; display: flex; align-items: center; gap: 12px; font-size: 1.1rem; color: var(--foreground); }
.r-tag { font-size: 0.75rem; padding: 2px 8px; border-radius: 12px; background: var(--muted); color: var(--accent-fg); font-weight: 600; }
.r-tag.overdue { background: rgba(229, 72, 77, 0.1); color: var(--destructive); }

/* Hover Actions */
.r-actions { display: flex; gap: 4px; opacity: 0; transition: opacity 0.2s; }
.reminder-row:hover .r-actions { opacity: 1; }
.r-actions button { background: transparent; border: none; font-size: 1.1rem; cursor: pointer; padding: 4px; border-radius: 4px; color: var(--muted-fg); }
.r-actions button:hover { background: var(--border); color: var(--foreground); }
.r-actions button.danger:hover { color: var(--destructive); }

/* Right Pane (Inspector) */
.pane-right { width: 30%; min-width: 350px; background: var(--nav-bg); border-left: 1px solid var(--border); box-shadow: -10px 0 20px rgba(0,0,0,0.05); }
.pane-right.closed { width: 0; min-width: 0; padding: 0; overflow: hidden; opacity: 0; border: none; }
.right-header { border-bottom: 1px solid var(--border); padding-bottom: 15px; margin-bottom: 15px; }
.detail-content { display: flex; flex-direction: column; gap: 20px; }
#detail-notes { width: 100%; height: 120px; background: var(--muted); border: 1px solid var(--border); border-radius: 8px; padding: 12px; color: var(--foreground); resize: none; font-family: inherit; }
.detail-section h4 { margin: 0 0 10px 0; font-size: 0.9rem; color: var(--muted-fg); text-transform: uppercase; }
.modern-input { width: 100%; background: var(--background); border: 1px solid var(--border); padding: 10px; border-radius: 8px; color: var(--foreground); font-family: inherit; margin-bottom: 10px; }
.quick-dates { display: flex; gap: 8px; }
.chip { background: var(--muted); border: 1px solid var(--border); padding: 6px 12px; border-radius: 16px; cursor: pointer; font-size: 0.85rem; color: var(--foreground); }
.chip:hover { background: var(--primary); color: var(--primary-fg); }
.drop-zone { border: 2px dashed var(--border); border-radius: 8px; padding: 30px; text-align: center; color: var(--muted-fg); cursor: pointer; }

/* Mini Calendar Drag Target */
.mini-cal { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.mini-cal-box { background: var(--nav-bg); border: 1px solid var(--border); padding: 15px; text-align: center; border-radius: 8px; cursor: pointer; transition: all 0.2s; }

/* Global Toast */
.toast { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%); background: var(--nav-bg); border: 1px solid var(--border); box-shadow: var(--shadow-deep); padding: 12px 20px; border-radius: 30px; display: flex; align-items: center; gap: 20px; z-index: 9999; transition: opacity 0.3s, transform 0.3s; }
.toast.hidden { opacity: 0; pointer-events: none; transform: translate(-50%, 20px); }
.toast span { color: var(--foreground); font-weight: 500; }
.toast button { background: var(--primary); color: var(--primary-fg); border: none; padding: 6px 16px; border-radius: 16px; cursor: pointer; font-weight: bold; }

/* Modals */
.modal-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); z-index: 10000; justify-content: center; align-items: flex-start; padding-top: 15vh; }
.cmd-box { background: var(--nav-bg); width: 100%; max-width: 600px; border-radius: 12px; box-shadow: var(--shadow-deep); border: 1px solid var(--border); overflow: hidden; animation: popIn 0.2s ease; }
#cmd-input { width: 100%; padding: 20px; font-size: 1.2rem; background: transparent; border: none; border-bottom: 1px solid var(--border); color: var(--foreground); outline: none; }
.cheat-sheet-box { background: var(--nav-bg); width: 100%; max-width: 800px; border-radius: 12px; padding: 40px; box-shadow: var(--shadow-deep); border: 1px solid var(--border); max-height: 70vh; overflow-y: auto; color: var(--foreground); animation: popIn 0.2s ease; }
.help-text { text-align: center; color: var(--muted-fg); font-size: 0.9rem; margin-top: 30px; }


/* Fix for the missing Small Action Buttons (+ and Sort) */
.icon-btn-small { background: transparent; border: 1px solid var(--border); color: var(--foreground); width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s ease; font-size: 1.1rem; }
.icon-btn-small:hover { background: var(--muted); border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }

/* Update the Input Wrapper to align the new button */
.nlp-input-wrapper { display: flex; align-items: center; gap: 12px; }
#nlp-input { flex-grow: 1; min-width: 0; }

/* Fixed: Removed pointer-events that were blocking clicks */
.nlp-submit-btn { background: var(--primary); color: var(--primary-fg); border: none; width: 36px; height: 36px; border-radius: 50%; font-size: 1.2rem; font-weight: bold; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1); opacity: 0.5; }
.nlp-input-wrapper:focus-within .nlp-submit-btn { opacity: 1; }
.nlp-submit-btn:hover { transform: scale(1.1); box-shadow: var(--shadow-soft); filter: brightness(1.1); opacity: 1; }

/* --- 19. UX IMPROVEMENTS: INLINE EDITING & CONTEXT MENU --- */
.custom-lists { flex-grow: 1; overflow-y: auto; padding-bottom: 20px; }

/* Highlight the list item when renaming */
.custom-list-item[contenteditable="true"] { background: var(--background); border: 1px solid var(--primary); outline: none; cursor: text; user-select: text; box-shadow: 0 0 0 2px var(--ring-color); }


/* --- 20. MOBILE RESPONSIVENESS & UI ADAPTATIONS --- */
@media (max-width: 768px) {
    
    /* 1. General Layout: Stack sidebars on top of the main canvas */
    #app-container, .reminders-layout { 
        flex-direction: column; 
    }
    
    /* 2. Sidebars transform into horizontal scrollable tab bars */
    #sidebar, .pane-left { 
        width: 100%; 
        min-width: 100%; 
        height: auto; 
        max-height: 180px; 
        border-right: none; 
        border-bottom: 1px solid var(--border); 
        padding: 15px; 
        flex-shrink: 0; 
    }
    
    /* Hide scrollbars for a clean native app feel */
    #chat-list, #todo-sidebar-list, .custom-lists { 
        display: flex; 
        flex-direction: row; 
        overflow-x: auto; 
        padding-bottom: 5px; 
        gap: 10px; 
        scrollbar-width: none; 
        -ms-overflow-style: none;
    }
    #chat-list::-webkit-scrollbar, #todo-sidebar-list::-webkit-scrollbar, .custom-lists::-webkit-scrollbar { 
        display: none; 
    }
    
    /* Style the list items as clickable pill tabs */
    .chat-list-item, .custom-list-item { 
        white-space: nowrap; 
        margin: 0; 
        padding: 8px 16px; 
        background: var(--muted); 
        border-radius: 20px; 
        border: 1px solid transparent; 
    }
    .chat-list-item.active, .custom-list-item.active { 
        border-color: var(--primary); 
        background: transparent; 
        color: var(--primary);
    }

    /* 3. Main Working Canvas takes the remaining height */
    #main-area, .pane-middle { 
        min-width: 100%; 
        width: 100%; 
        padding: 15px; 
        flex-grow: 1; 
        height: auto; 
    }
    
    /* 4. Force Hover Actions to always show on touch screens */
    .task-actions, .r-actions, .message-actions { 
        opacity: 1; 
    }
    
    /* --- REMINDERS SPECIFIC MOBILE TWEAKS --- */
    
    /* Grid layout for smart filters to save vertical space */
    .smart-filters { 
        display: grid; 
        grid-template-columns: 1fr 1fr; 
        gap: 10px; 
        margin-bottom: 15px; 
    }
    .view-title { font-size: 1.8rem; }
    
    /* Right Pane (Detail Inspector) turns into a full-screen slide-over modal */
    .pane-right { 
        position: fixed; 
        top: 60px; /* Below the navbar */
        right: 0; 
        width: 100%; 
        height: calc(100vh - 60px); 
        z-index: 1000; 
        box-shadow: -10px 0 30px rgba(0,0,0,0.8); 
        border-left: none; 
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
        transform: translateX(0); 
        background: var(--background); 
        padding: 20px !important; /* Force padding overrides */
        opacity: 1 !important; 
    }
    .pane-right.closed { 
        transform: translateX(100%); 
    }
    
    /* FEATURE REMOVAL: Disable Drag & Drop & Mini-Cal on Mobile */
    .r-actions button:last-child { display: none; } /* Hides drag handle */
    #toggle-cal-btn { display: none; } /* Hides mini-calendar toggle */
    
    /* --- TODO SPECIFIC MOBILE TWEAKS --- */
    .task-input-form { width: 100%; padding: 15px 10px; }
    .task-row { flex-wrap: wrap; }
    
    /* --- DIARY SPECIFIC MOBILE TWEAKS --- */
    /* Let the calendar grid expand fully on mobile */
    #sidebar { max-height: none; } 
    #diary-display-date { font-size: 1.6rem; }
    #diary-controls { flex-wrap: wrap; }
    
    /* --- GLOBAL MODALS --- */
    .cmd-box, .cheat-sheet-box { 
        width: 95%; 
        max-height: 80vh; 
        padding: 20px; 
    }
    .auth-card {
        padding: 30px 20px;
        margin: 15px;
    }
}

/* --- 21. CHAT FLEXBOX FIX & BUTTON ANIMATION --- */

/* Lock the main area height so the input box stays visible */
#main-area {
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden; 
}

#chat-box {
    flex-grow: 1; /* Takes 90% of the space automatically */
    overflow-y: auto;
    padding-bottom: 20px;
}

#input-area {
    flex-shrink: 0; /* Takes ~10% of the space, pinned to bottom */
    width: 100%;
    background: var(--nav-bg);
    border-top: 1px solid var(--border);
    padding: 10px 15px;
    align-items: center;
    padding-bottom: 20px;
}

/* Send Button Animation Logic */
#send-btn {
    width: 80px;
    height: 40px;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#send-btn .btn-icon { display: none; width: 18px; height: 18px; fill: none; }
#send-btn .btn-text { transition: opacity 0.2s; }

/* The 'Typing' State triggered by Javascript */
#send-btn.typing { width: 40px; border-radius: 50%; }
#send-btn.typing .btn-text { display: none; }
#send-btn.typing .btn-icon { display: block;}

@media (max-width: 768px) {
    /* Mobile Override: Always show the circular icon */
    #send-btn { width: 40px; border-radius: 50%; }
    #send-btn .btn-text { display: none; }
    #send-btn .btn-icon { display: block; }
    #input-area { padding-bottom: 50px; } /* iPhone notch fix */
}

/* --- 22. AUTHENTICATION PAGES --- */
.auth-wrapper { flex-grow: 1; overflow-y: auto; padding: 40px 20px; display: flex; align-items: flex-start; justify-content: center; width: 100%; }
.auth-card { background: var(--nav-bg); border: 1px solid var(--border); border-radius: 16px; padding: 30px; box-shadow: var(--shadow-deep); text-align: center; margin: auto; width: 100%; max-width: 400px; }
.auth-card h2 { color: var(--foreground); margin-bottom: 20px; font-size: 1.8rem; font-weight: 800; }
.auth-input { width: 100%; background: var(--background); border: 1px solid var(--border); padding: 12px; border-radius: 8px; color: var(--foreground); font-size: 1rem; margin-bottom: 15px; font-family: inherit; transition: border-color 0.2s; }
.auth-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.2); }
.auth-btn { background: var(--primary); color: var(--primary-fg); width: 100%; padding: 12px; font-size: 1.1rem; margin-top: 5px; border: none; border-radius: 8px; cursor: pointer; font-weight: bold; transition: all 0.2s; }
.auth-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft); filter: brightness(1.1); }
.auth-btn:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }
.auth-link { color: var(--primary); text-decoration: none; font-size: 0.9rem; display: inline-block; margin-top: 20px; font-weight: 500; }
.auth-link:hover { text-decoration: underline; }
.auth-error { color: var(--destructive); margin-top: 15px; background: rgba(229, 72, 77, 0.1); padding: 10px; border-radius: 8px; display: none; font-size: 0.9rem; font-weight: bold; }

/* --- 23. REMINDERS SQUISH FIX --- */
/* Forces the lists to keep their shape and allows scrolling instead of shrinking */
.sidebar ul {
    flex-grow: 1;
    overflow-y: auto;
    min-height: 150px; /* Guarantees the area never gets too small */
}

.sidebar li {
    flex-shrink: 0 !important; /* Physically prevents the browser from crushing the list item */
    min-height: 40px;
}

/* --- 24. DIARY MOBILE CALENDAR TOGGLE --- */
/* Hide the toggle button completely on PC */
#mobile-calendar-btn {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--primary);
    color: var(--primary-fg);
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    margin-bottom: 15px;
    width: 100%;
    font-size: 1rem;
    box-shadow: var(--shadow-soft);
}

@media (max-width: 768px) {
    /* On phones, show the toggle button AND force it to the very front */
    #mobile-calendar-btn {
        display: flex !important;
        position: relative !important; 
        z-index: 1005 !important; /* 1005 is higher than the calendar's 1000! */
    }

    /* THE FIX: Target the specific diary sidebar using the new class */
    #sidebar.diary-mobile-sidebar {
        display: none !important; 
        position: absolute !important;
        top: 60px !important; 
        left: 0 !important;
        width: 100% !important;
        height: calc(100vh - 60px) !important;
        height: calc(100dvh - 60px) !important;
        max-height: none !important; 
        z-index: 1000 !important; /* The calendar is at 1000 */
        background: var(--nav-bg) !important;
        box-shadow: var(--shadow-deep) !important;
    }

    /* Force it to open when the active class is applied */
    #sidebar.diary-mobile-sidebar.mobile-active {
        display: flex !important; 
        flex-direction: column !important;
    }
}

/* --- 25. FOOTER --- */
.app-footer {
    background-color: var(--nav-bg);
    border-top: 1px solid var(--border-subtle);
    padding: 15px 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--muted-fg);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 50;
}
.app-footer-links {
    display: flex;
    justify-content: center;
    gap: 15px;
}
.app-footer-links a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}
.app-footer-links a:hover {
    text-decoration: underline;
    color: var(--foreground);
}
.app-footer-text {
    line-height: 1.5;
}

/* --- 26. PLANNER UI --- */
.planner-layout { display: flex; height: calc(100vh - 60px); width: 100%; overflow: hidden; background: var(--background); }

/* Left Sidebar for Plans */
.plan-sidebar { width: 250px; background: var(--nav-bg); border-right: 1px solid var(--border); padding: 20px; display: flex; flex-direction: column; }
.plan-sidebar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; font-weight: 600; }
.plan-list { flex-grow: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 5px; }
.plan-item { padding: 10px; border-radius: 8px; cursor: pointer; color: var(--foreground); transition: background 0.2s; font-weight: 500; font-size: 0.95rem; }
.plan-item:hover { background: var(--hover-bg); }
.plan-item.active { background: var(--primary); color: var(--primary-fg); }
.plan-badge { font-size: 0.7rem; padding: 2px 6px; border-radius: 10px; background: var(--muted); color: var(--muted-fg); margin-top: 4px; display: inline-block; }

/* Main Tree Area */
.plan-main { flex: 1; display: flex; flex-direction: column; padding: 30px; overflow-y: auto; }
.plan-header { margin-bottom: 20px; border-bottom: 1px solid var(--border); padding-bottom: 20px; }
.plan-title { font-size: 2rem; font-weight: 700; color: var(--foreground); margin-bottom: 10px; }

/* Node Tree Grid */
.node-header-row { display: grid; grid-template-columns: 3fr 1fr 1fr 1fr 90px; padding: 10px; border-bottom: 2px solid var(--border); font-size: 0.85rem; font-weight: 700; color: var(--muted-fg); text-transform: uppercase; }
.plan-tree { display: flex; flex-direction: column; gap: 4px; padding-top: 10px; flex-grow: 1; cursor: text; }
.node-wrapper { display: flex; flex-direction: column; }
.node-row { display: grid; grid-template-columns: 3fr 1fr 1fr 1fr 90px; align-items: center; padding: 12px 15px; border-radius: 10px; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); border: 1px solid var(--border-subtle); border-left: 4px solid var(--border-subtle); background: var(--nav-bg); margin-bottom: 6px; box-shadow: 0 2px 8px rgba(0,0,0,0.02); cursor: pointer; }
.node-row:hover { background: var(--nav-bg); transform: translateX(4px) scale(1.01); border-color: var(--primary); box-shadow: var(--shadow-soft); z-index: 10; position: relative; }
.node-row.selected { background: var(--muted); border: 1px solid var(--border); }
.node-row[data-priority="important"] { border-left-color: var(--priority-important); background-color: var(--priority-important-bg); }
.node-row[data-priority="routine"] { border-left-color: var(--priority-routine); background-color: var(--priority-routine-bg); }
.node-row[data-priority="normal"] { border-left-color: var(--priority-normal); background-color: var(--priority-normal-bg); }

.node-title-cell { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.node-toggle { width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; cursor: pointer; color: var(--muted-fg); transition: transform 0.2s; }
.node-toggle.open { transform: rotate(90deg); }
.node-status { padding: 4px 10px; border-radius: 12px; font-size: 0.8rem; font-weight: 600; text-align: center; cursor: pointer; user-select: none; transition: transform 0.1s; justify-self: start; width: fit-content; }
.node-status:active { transform: scale(0.95); }
.status-todo { background: var(--muted); color: var(--foreground); }
.status-in_progress { background: rgba(94, 106, 210, 0.2); color: var(--primary); }
.status-done { background: rgba(93, 112, 82, 0.2); color: #5D7052; text-decoration: line-through; }
.node-date { font-size: 0.85rem; color: var(--muted-fg); cursor: text; user-select: none; min-height: 20px; }
.date-edit-input { width: 100%; max-width: 120px; background: var(--background); border: 1px solid var(--primary); color: var(--foreground); border-radius: 4px; padding: 2px 4px; outline: none; font-family: inherit; font-size: 0.8rem; }
.date-edit-input::-webkit-calendar-picker-indicator { cursor: pointer; filter: invert(0.5); }
.node-children { margin-left: 20px; border-left: 2px solid var(--border-subtle); padding-left: 10px; display: none; }
.node-wrapper.expanded > .node-children { display: flex; flex-direction: column; }

.node-attachment-dot { width: 8px; height: 8px; border-radius: 50%; background-color: var(--primary); cursor: pointer; position: relative; margin-right: 6px; flex-shrink: 0; box-shadow: 0 0 0 2px var(--background); transition: transform 0.2s; }
.attachment-tooltip { position: absolute; top: calc(100% + 5px); left: 0; z-index: 100; background: var(--nav-bg); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: 8px; padding: 5px; box-shadow: var(--shadow-float); display: none; width: max-content; max-width: 250px; pointer-events: none; }
.attachment-tooltip img { max-width: 100%; border-radius: 4px; display: block; max-height: 200px; object-fit: contain; }
.node-attachment-dot:hover .attachment-tooltip { display: block; animation: popIn 0.2s ease; }

/* Inline Node Details (Markdown) */
.node-details-dropdown { margin-left: 30px; margin-right: 10px; margin-bottom: 8px; padding: 15px; background: var(--hover-bg); border-left: 3px solid var(--primary); border-radius: 0 8px 8px 0; display: none; flex-direction: column; gap: 10px; font-size: 0.9rem; line-height: 1.6; animation: popIn 0.2s ease; box-shadow: inset 0 2px 5px rgba(0,0,0,0.05); }
.node-details-dropdown.open { display: flex; }
.node-details-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-subtle); padding-bottom: 8px; }
.md-read-mode { color: var(--foreground); white-space: pre-wrap; word-wrap: break-word; }
.md-read-mode pre { background: var(--background); padding: 10px; border-radius: 6px; overflow-x: auto; border: 1px solid var(--border); margin: 8px 0; }
.md-read-mode code { background: var(--background); padding: 2px 4px; border-radius: 4px; font-family: monospace; border: 1px solid var(--border); font-size: 0.85em; }
.md-edit-mode { display: flex; flex-direction: column; gap: 8px; }
.md-textarea { width: 100%; min-height: 100px; background: var(--background); color: var(--foreground); border: 1px solid var(--border); border-radius: 8px; padding: 10px; font-family: inherit; resize: vertical; outline: none; transition: border-color 0.2s; }
.md-textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(93, 112, 82, 0.2); }
.md-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 5px; }

/* Filters and Custom Tags */
.filter-dropdown { position: absolute; top: 100%; left: 220px; background: var(--nav-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--border); border-radius: 12px; padding: 15px; box-shadow: var(--shadow-deep); z-index: 1000; min-width: 200px; display: flex; flex-direction: column; gap: 10px; margin-top: 10px; animation: popIn 0.2s ease; }
.filter-item { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--foreground); cursor: pointer; text-transform: capitalize; }
.filter-actions { display: flex; justify-content: flex-end; margin-top: 5px; border-top: 1px solid var(--border-subtle); padding-top: 10px; }
.custom-tag-badge { background: var(--muted); border: 1px solid var(--primary); color: var(--primary); padding: 2px 8px; border-radius: 12px; font-size: 0.7rem; font-weight: 700; margin-left: 6px; display: inline-block; white-space: nowrap; }
.flat-context { font-size: 0.75rem; color: var(--primary); font-weight: 700; text-transform: uppercase; margin-bottom: 2px; }

/* Priority Tag Buttons */
.priority-btn { padding: 4px 10px; border-radius: 12px; border: 1px solid var(--border); font-size: 0.7rem; font-weight: 700; cursor: pointer; transition: all 0.2s; background: transparent; color: var(--muted-fg); }
.priority-btn:hover { filter: brightness(1.2); color: var(--foreground); }
.priority-btn.active-important { background: var(--priority-important); color: white; border-color: var(--priority-important); }
.priority-btn.active-routine { background: var(--priority-routine); color: white; border-color: var(--priority-routine); }
.priority-btn.active-normal { background: var(--priority-normal); color: white; border-color: var(--priority-normal); }

/* Modals */
.template-modal { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.6); backdrop-filter: blur(5px); display: none; justify-content: center; align-items: center; z-index: 1000; }
.template-card { background: var(--nav-bg); padding: 30px; border-radius: 16px; width: 400px; box-shadow: var(--shadow-float); border: 1px solid var(--border); }
.template-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 15px; }
.template-btn { padding: 15px; border: 1px solid var(--border); border-radius: 8px; background: var(--background); color: var(--foreground); cursor: pointer; transition: 0.2s; font-weight: 600; }
.template-btn:hover { border-color: var(--primary); transform: translateY(-2px); }

/* Kanban View */
.kanban-board { display: flex; gap: 20px; padding-top: 10px; flex-grow: 1; overflow-x: auto; overflow-y: hidden; }
.kanban-column { display: flex; flex-direction: column; min-width: 300px; max-width: 350px; background: var(--nav-bg); border: 1px solid var(--border); border-radius: 12px; padding: 15px; flex-shrink: 0; box-shadow: var(--shadow-soft); transition: all 0.2s ease; }
.kanban-column.drag-over { background: var(--hover-bg); border-color: var(--primary); }
.kanban-column-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; border-bottom: 2px solid var(--border-subtle); padding-bottom: 10px; }
.kanban-column-header h3 { font-size: 1rem; color: var(--foreground); font-weight: 700; margin: 0; }
.kanban-count { background: var(--muted); padding: 2px 8px; border-radius: 12px; font-size: 0.8rem; color: var(--muted-fg); font-weight: bold; }
.kanban-cards { display: flex; flex-direction: column; gap: 10px; overflow-y: auto; flex-grow: 1; padding-right: 5px; }
.kanban-card { background: var(--background); border: 1px solid var(--border-subtle); border-left: 4px solid var(--border-subtle); border-radius: 8px; padding: 12px; cursor: pointer; transition: all 0.2s ease; box-shadow: 0 2px 5px rgba(0,0,0,0.02); }
.kanban-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft); border-right-color: var(--primary); border-top-color: var(--primary); border-bottom-color: var(--primary); }
.kanban-card[data-priority="important"] { border-left-color: var(--priority-important); }
.kanban-card[data-priority="routine"] { border-left-color: var(--priority-routine); }
.kanban-card[data-priority="normal"] { border-left-color: var(--priority-normal); }
.kanban-card-title { font-weight: 600; font-size: 0.95rem; color: var(--foreground); margin-bottom: 8px; word-wrap: break-word; }
.kanban-card-meta { font-size: 0.75rem; color: var(--muted-fg); display: flex; gap: 10px; }

/* --- 27. PLANNER VISUALIZATION MODAL --- */
.viz-modal { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.6); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); z-index: 10000; display: flex; flex-direction: column; animation: popIn 0.3s ease; padding: 30px; box-sizing: border-box; }
.viz-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 30px; background: var(--nav-bg); border: 1px solid var(--border); border-radius: 16px 16px 0 0; }
.viz-header h2 { color: var(--foreground); margin: 0; font-size: 1.5rem; font-weight: 700; }
.viz-network-container { flex-grow: 1; min-height: 500px; width: 100%; position: relative; background-color: var(--background); background-image: radial-gradient(var(--border) 1.5px, transparent 1.5px); background-size: 25px 25px; border: 1px solid var(--border); border-top: none; border-radius: 0 0 16px 16px; outline: none; box-shadow: inset 0 0 50px rgba(0,0,0,0.05); }
.viz-rename-input { position: absolute; transform: translate(-50%, -50%); background: var(--background); color: var(--foreground); border: 2px solid var(--primary); border-radius: 8px; padding: 8px 12px; font-size: 16px; font-weight: bold; font-family: 'Inter', sans-serif; text-align: center; box-shadow: var(--shadow-deep); z-index: 10001; outline: none; width: auto; min-width: 150px; }
.viz-collapse-btn { position: absolute; transform: translate(-50%, -100%); background: var(--nav-bg); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border: 1px solid var(--primary); color: var(--primary); padding: 4px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: bold; cursor: pointer; z-index: 10001; box-shadow: var(--shadow-soft); transition: all 0.2s ease; }
.viz-collapse-btn:hover { background: var(--primary); color: var(--primary-fg); transform: translate(-50%, -105%) scale(1.05); }