:root {
    /* Apolo Modern Tech Theme (Blue, White, Silver) */
    --apolo-blue: #2563eb;
    --apolo-blue-dark: #1e40af;
    --apolo-blue-light: #eff6ff;
    --apolo-slate: #475569;
    --apolo-slate-light: #f8fafc;
    
    /* Variables mapping */
    --bg-page: #f1f5f9; 
    --bg-sidebar: #ffffff;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.9);
    
    --text-primary: #0f172a; 
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;
    
    --accent: var(--apolo-blue);
    --accent-hover: var(--apolo-blue-dark);
    
    --border: #e2e8f0;
    --border-strong: #cbd5e1;
    --radius: 12px; 
    --radius-sm: 8px;
    
    --font-serif: 'Inter', sans-serif; /* Switch to modern sans-serif as primary */
    --font-sans: 'Inter', sans-serif;
    
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.05);

    --gradient-accent: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

[data-theme="dark"] {
    /* Modern Dark Theme */
    --bg-page: #0f172a; 
    --bg-sidebar: #1e293b;
    --bg-surface: #1e293b; 
    --bg-surface-elevated: #334155;
    --bg-glass: rgba(15, 23, 42, 0.9);
    
    --text-primary: #f8fafc; 
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --text-inverse: #0f172a;
    
    --border: #334155;
    --border-strong: #475569;
    
    --shadow: 0 10px 20px rgba(0,0,0,0.4);
    --shadow-inset: inset 0 2px 4px rgba(0,0,0,0.3);
    
    --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

/* ===================== RESET & BASE ===================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background-color: var(--bg-page);
    min-height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    /* Vignette effect */
    background-image: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.05) 100%);
}

[data-theme="dark"] body {
    background-image: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.3) 100%);
}

/* Clean minimalist background */
body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background-color: var(--bg-page);
    min-height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, .email-view-header h2, .sidebar-header h2 {
    font-family: var(--font-serif);
    font-weight: 700;
}

/* ===================== LAYOUT ===================== */
.app-screen {
    display: flex;
    width: 100vw;
    height: 100vh;
}

.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 4px double var(--border-strong); /* Frame border */
    display: flex;
    flex-direction: column;
    z-index: 20;
    box-shadow: 2px 0 10px rgba(0,0,0,0.05); /* Depth */
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    height: 70px;
    background-color: var(--bg-surface);
    border-bottom: 4px double var(--border-strong); /* Frame border */
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

.content-area {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* Panels */
.email-list-panel {
    width: 380px;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 10px -4px rgba(0,0,0,0.05);
}

.panel-header {
    padding: 1.5rem;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border);
    background-image: linear-gradient(to bottom, rgba(255,255,255,0.4), rgba(255,255,255,0));
}

.empty-state {
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.empty-state svg {
    width: 48px; height: 48px;
    opacity: 0.5;
    color: var(--apolo-blue);
    filter: drop-shadow(0 2px 2px rgba(0,0,0,0.1));
}

.reading-pane {
    flex: 1;
    background-color: var(--bg-page);
    overflow-y: auto;
    position: relative;
    display: flex;
    flex-direction: column;
    /* Inner shadow to look like a recessed desk surface */
    box-shadow: inset 10px 10px 20px -10px rgba(0,0,0,0.1); 
}

.no-email-selected {
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-family: var(--font-serif);
    font-size: 1.4rem;
    gap: 1.5rem;
    text-align: center;
    font-style: italic;
    text-shadow: 0 1px 0 rgba(255,255,255,0.5);
}

.no-email-selected svg {
    width: 80px; height: 80px;
    opacity: 0.2;
    filter: sepia(1);
}

/* Dark Mode Hover Fixes */
[data-theme="dark"] .email-item:hover {
    color: var(--text-primary) !important;
}
[data-theme="dark"] .email-item:hover * {
    color: var(--text-primary) !important;
}
[data-theme="dark"] .nav-item:hover {
    color: var(--text-primary) !important;
    background-color: var(--apolo-blue);
}
[data-theme="dark"] .btn-logout:hover {
    background-color: var(--apolo-blue-light);
    color: #8b0000;
    border-color: #8b0000;
}

/* ===================== COMPONENTS ===================== */

/* Sidebar */
.sidebar-header {
    height: 70px;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    border-bottom: 4px double var(--border-strong);
    background-image: linear-gradient(to bottom, rgba(0,0,0,0.02), transparent);
}

.sidebar-header h2 {
    color: var(--text-primary);
    letter-spacing: 1px;
    text-shadow: 0 1px 0 rgba(255,255,255,0.4);
}

[data-theme="dark"] .sidebar-header h2 {
    text-shadow: 0 1px 0 rgba(0,0,0,1);
}

.accent {
    color: var(--apolo-blue);
}

.btn-compose {
    margin: 1.5rem;
    padding: 0.8rem;
    background: var(--gradient-accent);
    color: white; /* Always white for contrast on gold */
    border: 1px solid #a68b4f;
    border-radius: var(--radius);
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    /* Tactile button feel */
    box-shadow: 
        inset 0 1px 0 rgba(255,255,255,0.4),
        0 4px 6px rgba(0,0,0,0.1),
        0 1px 3px rgba(0,0,0,0.1);
    transition: all 0.1s;
    text-shadow: 0 -1px 0 rgba(0,0,0,0.2);
}

.btn-compose:active {
    transform: translateY(2px);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
}

.btn-secondary {
    padding: 0.8rem 1.5rem;
    background: transparent;
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    border-radius: var(--radius);
    font-family: var(--font-serif);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
    box-shadow: 0 2px 0 rgba(0,0,0,0.05);
}

.btn-secondary:hover {
    background: rgba(37, 99, 235, 0.05);
    color: var(--apolo-blue); 
    border-color: var(--apolo-blue);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 1.5rem; 
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius);
    margin-bottom: 0.25rem;
    font-family: var(--font-serif);
    font-size: 1.1rem;
    transition: all 0.2s;
    border: 1px solid transparent; /* Prevent layout shift */
}

.nav-item:hover {
    background-color: rgba(197, 160, 89, 0.1);
    color: var(--text-primary);
    border-color: rgba(197, 160, 89, 0.2);
}

/* Indented/Pressed style for active state */
.nav-item.active {
    background-color: var(--bg-surface-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-inset);
    font-weight: 700;
}

[data-theme="dark"] .nav-item.active {
    background-color: var(--apolo-blue);
    color: #ffffff !important; 
    border-color: var(--apolo-blue);
}

.badge {
    background-color: var(--text-primary);
    color: var(--bg-surface);
    padding: 2px 6px;
    font-size: 0.75rem;
    margin-left: auto;
    font-family: var(--font-sans);
    border-radius: 2px;
}

[data-theme="dark"] .badge {
    background-color: var(--apolo-blue);
    color: #fff;
}

/* Email Items */
.email-item {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
    background-color: var(--bg-surface);
    position: relative;
}

.email-item:hover {
    background-color: var(--bg-page);
    padding-left: 1.75rem; /* Slight slide effect */
}

.email-item.unread {
    background-color: rgba(197, 160, 89, 0.05);
}

.email-item.unread .email-item-subject {
    font-weight: 700;
}

.email-item.unread::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background-color: var(--apolo-blue);
}

/* Active Email Item: Looks like a selected card */
.email-item.active {
    background: var(--bg-surface-elevated);
    box-shadow: var(--shadow-inset);
    border-left: 4px solid var(--text-primary);
}

[data-theme="dark"] .email-item.active {
    border-left-color: var(--apolo-blue);
    color: var(--text-primary);
}
[data-theme="dark"] .email-item.active * {
    color: var(--text-primary); /* Reset forced colors */
}

.email-item-from {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.email-item-subject {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
    font-weight: 500;
}

.email-item-preview {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Email Detail View */
.email-view-header {
    padding: 2rem;
    border-bottom: 1px dashed var(--border-strong); /* Perforation line */
    background-color: var(--bg-surface);
    background-image: url("https://www.transparenttextures.com/patterns/p6.png");
}

.email-view-title-bar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.subject-line {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.subject-line h2 {
    font-size: 1.6rem;
    margin: 0;
    line-height: 1.2;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.mobile-only { display: none; }

.email-view-body {
    padding: 4rem; /* More generous paper margins */
    margin: 2rem auto;
    max-width: 900px;
    background-color: #fffef2; /* Very light cream paper */
    color: #2c241e;
    border: 1px solid #e0e0e0;
    /* Physical paper stack effect */
    box-shadow: 
        0 1px 1px rgba(0,0,0,0.15), 
        0 10px 0 -5px #fffef2, 
        0 10px 1px -4px rgba(0,0,0,0.15), 
        0 20px 0 -10px #fffef2, 
        0 20px 1px -9px rgba(0,0,0,0.15);
    line-height: 1.8;
    font-family: 'Inter', sans-serif; /* Better serif for reading */
}

[data-theme="dark"] .email-view-body {
    background-color: #2e2621;
    color: #e6d5b8;
    border-color: #3d3029;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5); /* Glowing paper in dark */
}

/* Form Elements (Ledger Style) */
.search-container {
    display: flex;
    align-items: center;
    background-color: transparent;
    border-bottom: 2px solid var(--border-strong); /* Underline only */
    padding: 0.5rem 0;
    width: 400px;
    gap: 0.5rem;
}

.search-container input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    width: 100%;
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.1rem;
}
.search-container input::placeholder {
    color: var(--text-muted);
}

.btn-icon {
    background: none;
    border: 1px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
}

.btn-icon:hover {
    color: var(--text-primary);
    background-color: rgba(0,0,0,0.05);
    border-color: var(--border);
}

.avatar {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-weight: 700;
    box-shadow: var(--shadow);
}

/* ===================== COMPOSE MODAL FULL-SCREEN ===================== */
.compose-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(6px);
    padding: 1rem;
}

.compose-window {
    background-color: var(--bg-surface);
    border: 2px solid var(--apolo-blue);
    border-radius: 2px;
    width: 100%;
    max-width: 960px;
    height: calc(100vh - 2rem);
    max-height: 900px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(197,160,89,0.2);
    overflow: hidden;
    animation: composeSlideIn 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes composeSlideIn {
    from { opacity: 0; transform: translateY(20px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Compose Header */
.compose-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.5rem;
    background: var(--gradient-accent);
    color: white;
    flex-shrink: 0;
}

.compose-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.compose-title-text {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    letter-spacing: 0.5px;
}

.compose-char-count {
    font-size: 0.75rem;
    opacity: 0.75;
    font-family: var(--font-sans);
}

.compose-header-btn {
    color: rgba(255,255,255,0.85);
    border-radius: 50%;
    padding: 0.4rem;
}

.compose-header-btn:hover {
    background: rgba(255,255,255,0.2);
    color: white;
    border-color: transparent;
}

/* Compose Fields */
.compose-fields {
    flex-shrink: 0;
    border-bottom: 2px solid var(--border);
    background-color: var(--bg-surface);
}

.compose-field-row {
    display: flex;
    align-items: center;
    border-bottom: 1px dashed var(--border);
    padding: 0 1.5rem;
    min-height: 44px;
}

.compose-field-row:last-child {
    border-bottom: none;
}

.compose-field-label {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-secondary);
    width: 60px;
    flex-shrink: 0;
    padding-right: 0.75rem;
}

.compose-field-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    padding: 0.6rem 0;
    outline: none;
}

.compose-field-input::placeholder {
    color: var(--text-muted);
}

.compose-subject-input {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 700;
}

.compose-cc-btns {
    display: flex;
    gap: 0.4rem;
    margin-left: 0.5rem;
}

.compose-cc-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 3px;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: all 0.15s;
}

.compose-cc-btn:hover {
    border-color: var(--apolo-blue);
    color: var(--text-primary);
    background: rgba(197,160,89,0.08);
}

/* Compose Body (Editor) */
.compose-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* Image Drop Overlay */
.image-drop-overlay {
    position: absolute;
    inset: 0;
    background: rgba(197,160,89,0.12);
    border: 3px dashed var(--apolo-blue);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    pointer-events: none;
    backdrop-filter: blur(2px);
    transition: all 0.2s;
}

.image-drop-overlay.active {
    display: flex;
}

.image-drop-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--apolo-blue);
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-style: italic;
    pointer-events: none;
}

.image-drop-hint svg {
    width: 64px;
    height: 64px;
    opacity: 0.8;
}

/* Quill Editor Overrides */
#compose-editor-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

/* Quill Toolbar */
#compose-editor-container .ql-toolbar.ql-snow {
    border: none;
    border-bottom: 2px solid var(--border);
    background-color: var(--bg-surface-elevated);
    padding: 8px 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    align-items: center;
    flex-shrink: 0;
}

[data-theme="dark"] #compose-editor-container .ql-toolbar.ql-snow {
    background-color: var(--bg-sidebar);
    border-bottom-color: var(--border);
}

#compose-editor-container .ql-toolbar .ql-stroke {
    stroke: var(--text-secondary);
}

#compose-editor-container .ql-toolbar .ql-fill {
    fill: var(--text-secondary);
}

#compose-editor-container .ql-toolbar .ql-picker {
    color: var(--text-secondary);
}

#compose-editor-container .ql-toolbar button:hover .ql-stroke,
#compose-editor-container .ql-toolbar button.ql-active .ql-stroke {
    stroke: var(--apolo-blue);
}

#compose-editor-container .ql-toolbar button:hover .ql-fill,
#compose-editor-container .ql-toolbar button.ql-active .ql-fill {
    fill: var(--apolo-blue);
}

#compose-editor-container .ql-toolbar .ql-picker-label {
    color: var(--text-secondary);
}

/* Quill Editor Area */
#compose-editor-container .ql-container.ql-snow {
    border: none;
    flex: 1;
    overflow-y: auto;
    font-family: var(--font-sans);
}

#compose-editor-container .ql-editor {
    min-height: 200px;
    padding: 1.5rem 2rem;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-surface);
    caret-color: var(--apolo-blue);
}

[data-theme="dark"] #compose-editor-container .ql-editor {
    color: var(--text-primary);
    background-color: var(--bg-surface);
}

#compose-editor-container .ql-editor.ql-blank::before {
    font-style: italic;
    color: var(--text-muted);
    font-family: var(--font-serif);
    font-size: 1rem;
    left: 2rem;
}

/* Images inside Quill */
#compose-editor-container .ql-editor img {
    max-width: 100%;
    height: auto;
    cursor: pointer;
    transition: box-shadow 0.2s;
    border: 2px solid transparent;
}

#compose-editor-container .ql-editor img:hover {
    border-color: var(--apolo-blue);
    box-shadow: 0 0 0 3px rgba(197,160,89,0.2);
}

/* Quill Image Resize handles */
.ql-image-resize-container {
    border: 2px dashed var(--apolo-blue);
}

/* Compose Footer */
.compose-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    border-top: 2px solid var(--border);
    background-color: var(--bg-surface-elevated);
    flex-shrink: 0;
    gap: 1rem;
}

.compose-footer-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.compose-footer-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.compose-tool-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: 3px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s;
}

.compose-tool-btn svg {
    width: 15px;
    height: 15px;
}

.compose-tool-btn:hover {
    border-color: var(--apolo-blue);
    color: var(--text-primary);
    background: rgba(197,160,89,0.08);
}

.compose-cancel-btn {
    background: transparent;
    border: 1px solid var(--border-strong);
    color: var(--text-secondary);
    padding: 0.5rem 1.2rem;
    border-radius: 3px;
    cursor: pointer;
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.compose-cancel-btn:hover {
    border-color: #8b0000;
    color: #8b0000;
    background: rgba(139,0,0,0.04);
}

.compose-send-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.8rem;
    background: var(--gradient-accent);
    color: white;
    border: 1px solid #a68b4f;
    border-radius: 3px;
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.3), 0 3px 8px rgba(0,0,0,0.15);
    transition: all 0.15s;
    text-shadow: 0 1px 1px rgba(0,0,0,0.2);
}

.compose-send-btn:hover {
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.3), 0 5px 14px rgba(0,0,0,0.25);
    transform: translateY(-1px);
}

.compose-send-btn:active {
    transform: translateY(1px);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
}

.compose-send-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.compose-send-btn svg {
    width: 16px;
    height: 16px;
}

/* Compose Attachments */
.compose-attachments-area {
    border-top: 1px dashed var(--border);
    padding: 0.5rem 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    flex-shrink: 0;
}

.compose-attachments-area:empty {
    display: none;
}

/* Legacy modal (generic) - kept for any dialog usage */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--bg-surface);
    border: 3px double var(--apolo-blue);
    border-radius: 0;
    width: 100%; max-width: 700px;
    display: flex;
    flex-direction: column;
    max-height: 90vh;
}

.modal-content form {
    padding: 2rem;
    overflow-y: auto;
}

.modal-header {
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ===================== QUILL ALIGNMENT HELPERS (email-safe inline) ===================== */
.ql-editor .ql-align-center { text-align: center; }
.ql-editor .ql-align-right { text-align: right; }
.ql-editor .ql-align-justify { text-align: justify; }

.form-group label {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--text-primary);
}

/* Modal form adjustments */
.form-group input, .form-group textarea {
    width: 100%;
    border: none;
    border-bottom: 2px dashed var(--border); /* Dotted line ledger */
    background-color: transparent;
    color: var(--text-primary);
    border-radius: 0;
    padding: 1rem 0.5rem;
    font-family: var(--font-serif);
    font-size: 1.1rem;
    transition: all 0.2s;
}

.form-group input:focus, .form-group textarea:focus {
    border-bottom-color: var(--apolo-blue);
    border-bottom-style: solid;
    outline: none;
    background-color: rgba(197, 160, 89, 0.05);
}

/* Attachments */
.attachments-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    transition: all 0.2s;
}

.btn-sm:hover {
    border-color: var(--apolo-blue);
    color: var(--text-primary);
    background: rgba(197, 160, 89, 0.05);
}

.attachments-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.attachment-chip {
    background: var(--bg-surface-elevated);
    border: 1px dashed var(--border-strong);
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.attachment-chip .btn-remove-att {
    background: none;
    border: none;
    color: #8b0000;
    cursor: pointer;
    font-weight: bold;
    padding: 2px;
}

/* ===================== THEME TOGGLE ANIMATION ===================== */
#btn-theme-toggle i {
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

[data-theme="dark"] #btn-theme-toggle i {
    transform: rotate(180deg);
}

/* Scrollbars */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-page); }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 0; }

/* Sidebar Footer */
.sidebar-footer {
    padding: 1.5rem;
    margin-top: auto; /* Push to bottom */
    border-top: 1px solid var(--border);
}

.btn-logout {
    width: 100%;
    padding: 0.75rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-serif);
    font-weight: 700;
    transition: all 0.2s;
}

.btn-logout:hover {
    background: rgba(180, 0, 0, 0.05);
    color: #8b0000;
    border-color: #8b0000;
}

/* User Info Section (Topbar) */
.user-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

#user-email-display {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--text-primary);
    display: block;
}

/* Login Screen Logic */
.login-screen {
    background-color: var(--bg-page);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh; /* Critical for centering */
    width: 100vw;
    position: fixed;
    top: 0; 
    left: 0;
    z-index: 1000;
}

.login-card {
    background-color: var(--bg-surface);
    border: 8px double var(--apolo-blue); /* Thicker frame */
    padding: 3rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 
        0 20px 60px rgba(0,0,0,0.2), 
        0 0 0 1px rgba(0,0,0,0.1);
    position: relative;
}

/* Stamp effect for logo */
.login-header {
    text-align: center;
    margin-bottom: 1rem;
}

.login-header h1 {
    display: inline-block;
    border-bottom: 3px double var(--apolo-blue);
    padding-bottom: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
    color: var(--text-primary);
}

.login-header p {
    color: var(--text-secondary);
    font-family: var(--font-serif);
    font-style: italic;
}

.btn-primary {
    width: 100%;
    padding: 1rem;
    background: var(--gradient-accent);
    border: 1px solid var(--border-strong);
    color: white; /* Text color for contrast */
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.1s, box-shadow 0.1s;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.btn-primary:active {
    transform: translateY(2px);
    box-shadow: none;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .email-list-panel { width: 100%; }
    .user-info span { display: none; } /* Hide email text on mobile */
    .topbar { padding: 0 1rem; }
    .compose-window {
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
    }
}

/* ===================== TOAST NOTIFICATIONS ===================== */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.25rem;
    border-radius: 3px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    color: white;
    min-width: 260px;
    max-width: 380px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
    animation: toastSlideIn 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: auto;
    border-left: 4px solid rgba(255,255,255,0.4);
}

@keyframes toastSlideIn {
    from { opacity: 0; transform: translateX(30px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeOut {
    to { opacity: 0; transform: translateX(30px); }
}

.toast.success { background-color: #2d6a4f; }
.toast.error   { background-color: #7b2d27; }
.toast.info    { background-color: #704214; }

/* ===================== LOADING OVERLAY ===================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 9998;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    gap: 1rem;
    font-family: var(--font-serif);
    font-size: 1.2rem;
}

/* ===================== SPINNER ===================== */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(197,160,89,0.3);
    border-top-color: var(--apolo-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===================== ERROR MESSAGE ===================== */
.error-message {
    color: #c0392b;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: rgba(192,57,43,0.08);
    border-left: 3px solid #c0392b;
    font-family: var(--font-sans);
}

/* ===================== EMAIL LIST SCROLL ===================== */
.email-list {
    flex: 1;
    overflow-y: auto;
}

/* ===================== EMAIL VIEW SCROLL ===================== */
.email-view {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* ===================== BTN-DANGER ===================== */
.btn-danger {
    color: #8b0000 !important;
}
.btn-danger:hover {
    background-color: rgba(139,0,0,0.08) !important;
    border-color: #8b0000 !important;
}

/* ===================== COMPOSE CC BTN ACTIVE STATE ===================== */
.compose-cc-btn-active {
    border-color: var(--apolo-blue) !important;
    color: var(--text-primary) !important;
    background: rgba(197,160,89,0.15) !important;
}

/* ===================== QUILL SIZE PICKER FIX ===================== */
/*
 * Quill 1.x solo define labels para 'small', 'large', 'huge'.
 * Para nuestra whitelist de tamaños en px necesitamos definir ::before
 * con el valor real. Usamos data-value para que sea dinámico.
 */
.ql-snow .ql-picker.ql-size .ql-picker-item::before,
.ql-snow .ql-picker.ql-size .ql-picker-label::before {
    content: 'Normal';
}

/* Tamaños custom: mostrar el valor px directo */
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value]::before {
    content: attr(data-value);
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value]::before {
    content: attr(data-value) !important;
}

/* Sin data-value = Normal (valor por defecto) */
.ql-snow .ql-picker.ql-size .ql-picker-item:not([data-value])::before {
    content: 'Normal';
}
.ql-snow .ql-picker.ql-size .ql-picker-label:not([data-value])::before,
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value=""]::before {
    content: 'Normal' !important;
}

/* Hacer el picker de tamaño un poco más ancho para que quepan "48px" */
.ql-snow .ql-picker.ql-size {
    width: 70px;
}

/* Header picker — mostrar mejor */
.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
    content: 'Normal';
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before { content: 'Título 1'; }
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before { content: 'Título 2'; }
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before { content: 'Título 3'; }

.ql-snow .ql-picker.ql-header {
    width: 88px;
}

/* ===================== COMPOSE TOOL BTN — PLANTILLAS ===================== */
.compose-tool-btn--templates {
    color: var(--apolo-blue) !important;
    border-color: var(--apolo-blue) !important;
    font-weight: 600;
}
.compose-tool-btn--templates:hover {
    background: rgba(197,160,89,0.12) !important;
}


/* ===================== TEMPLATE DROPDOWN (sube desde el botón) ===================== */

/* Wrapper con position:relative para anclar el dropdown */
.tpl-dd-wrapper {
    position: relative;
    display: inline-flex;
}

/* El dropdown en sí */
.tpl-dropdown {
    position: absolute;
    bottom: calc(100% + 8px); /* sube sobre el botón */
    left: 0;
    width: 240px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 -8px 32px rgba(0,0,0,0.18), 0 2px 8px rgba(0,0,0,0.08);
    z-index: 9000;
    overflow: hidden;
    /* Animación: opacidad + deslizar */
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.17s ease, transform 0.17s ease;
    pointer-events: none;
}

.tpl-dropdown.tpl-dd-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* Cabecera del dropdown */
.tpl-dd-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 13px 8px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #fff;
    background: linear-gradient(135deg, var(--apolo-blue-dark), var(--apolo-blue));
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

/* Grupo de categoría */
.tpl-dd-group {
    padding: 4px 0;
    border-bottom: 1px solid var(--border);
}
.tpl-dd-group:last-child { border-bottom: none; }

.tpl-dd-group-label {
    display: block;
    padding: 6px 13px 3px;
    font-size: 0.67rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Ítem de plantilla */
.tpl-dd-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 8px 13px;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.83rem;
    transition: background 0.1s, color 0.1s;
}

.tpl-dd-item:hover {
    background: rgba(197,160,89,0.1);
    color: var(--apolo-blue);
}

.tpl-dd-item svg {
    color: var(--apolo-blue);
    opacity: 0.85;
    flex-shrink: 0;
}