/* ===========================
   AIForge Library Manager
   Apple Human Interface Guidelines Inspired Design System
   Polished UI/UX matching Designer UI
   =========================== */

/* === Typography === */
:root {
    /* AIForge Colors - Light Blue, Orange, White, Gray */
    --color-primary: #4A90D9;
    --color-secondary: #F5A623;
    --color-success: #6B9E78;
    --color-danger: #D9534F;
    --color-warning: #F5A623;
    --color-info: #7AB3E8;
    
    /* Additional Colors */
    --color-teal: #7AB3E8;
    --color-pink: #D9534F;
    --color-purple: #6B7C8A;
    --color-indigo: #4A90D9;
    
    /* Backgrounds */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F6F8;
    --bg-tertiary: #FFFFFF;
    --bg-elevated: #FFFFFF;
    
    /* Text */
    --text-primary: #2C3E50;
    --text-secondary: #6B7C8A;
    --text-tertiary: #6B7C8A99;
    --text-quaternary: #6B7C8A60;
    
    /* Borders & Separators */
    --separator-opaque: #D1D5DB;
    --separator-non-opaque: #6B7C8A29;
    
    /* Shadows - Enhanced */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    --shadow-md: 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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-card-hover: 0 16px 32px rgba(0, 0, 0, 0.15), 0 6px 12px rgba(0, 0, 0, 0.1);
    
    /* Spacing Scale (Apple HIG uses 4px base) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    
    /* Border Radius (Apple uses generous curves) */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Typography Scale */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 28px;
    --font-size-4xl: 34px;
    --font-size-5xl: 42px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
    --transition-spring: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Dark Mode === */
/* Uses Bootstrap's native data-bs-theme="dark" for component styling */
/* These are custom CSS variables for our app-specific styles (sidebar, cards, etc.) */
[data-bs-theme="dark"] {
    /* Custom color palette for app-specific components */
    --color-primary: #7AB3E8;          /* Light blue */
    --color-secondary: #F7BE5C;
    --color-success: #8FB99A;
    --color-danger: #E57F7B;
    --color-warning: #F7BE5C;
    --color-info: #A5CCF0;
    
    /* App layout backgrounds */
    --bg-primary: #1A1D21;
    --bg-secondary: #2C3038;
    --bg-tertiary: #363B44;
    --bg-elevated: #212529;
    --bg-hover: #2e3135;
    --bg-active: #363a3f;
    
    /* App layout text */
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --text-tertiary: #6c757d;
    --text-quaternary: #495057;
    
    /* App layout borders */
    --separator-opaque: #495057;
    --separator-non-opaque: #343a40;
    
    /* Shadows for dark mode */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5);
}

/* =============================================
   Dark Mode - Custom App Component Overrides
   (Bootstrap handles standard components automatically)
   ============================================= */

/* --- Sidebar --- */
[data-bs-theme="dark"] .sidebar {
    background-color: var(--bg-elevated);
    border-right-color: var(--separator-non-opaque);
}

[data-bs-theme="dark"] .sidebar-header {
    border-bottom-color: var(--separator-non-opaque);
}

[data-bs-theme="dark"] .nav-link {
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .nav-link:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

[data-bs-theme="dark"] .nav-link.active {
    background-color: var(--bs-primary);
    color: #fff;
}

[data-bs-theme="dark"] .nav-section-header {
    color: var(--text-tertiary);
}

[data-bs-theme="dark"] .nav-divider {
    border-color: var(--separator-non-opaque);
}

/* Dark mode hamburger button */
[data-bs-theme="dark"] .hamburger-btn {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .hamburger-btn:hover {
    background: var(--color-primary);
    color: white;
}

/* --- Main Content Area --- */
[data-bs-theme="dark"] .main-content {
    background-color: var(--bg-secondary);
}

[data-bs-theme="dark"] .top-header {
    background-color: var(--bg-secondary);
}

/* --- Custom Cards (gradient cards, stat cards) --- */
[data-bs-theme="dark"] .card {
    background-color: var(--bg-elevated);
    border-color: var(--separator-non-opaque);
}

[data-bs-theme="dark"] .stat-card {
    border-color: transparent;
}

[data-bs-theme="dark"] .pack-card {
    background-color: var(--bg-elevated);
    border-color: var(--separator-non-opaque);
}

[data-bs-theme="dark"] .pack-card .card-header {
    background-color: var(--bg-tertiary);
}

[data-bs-theme="dark"] .pack-card .card-title {
    color: var(--text-primary);
}

[data-bs-theme="dark"] .pack-card .card-text {
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .pack-card .card-footer {
    background-color: var(--bg-tertiary);
}

/* --- Theme Toggle Button --- */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--bs-body-color);
    box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
    background: var(--bs-tertiary-bg);
    color: var(--bs-warning);
    transform: scale(1.08);
    box-shadow: var(--shadow-md);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle i {
    font-size: var(--font-size-lg);
    transition: transform var(--transition-slow);
}

.theme-toggle:hover i {
    transform: rotate(20deg);
}

[data-bs-theme="dark"] .theme-toggle {
    color: var(--bs-warning);
}

[data-bs-theme="dark"] .theme-toggle:hover {
    color: var(--bs-body-color);
}

/* === Base Styles === */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); font-weight: 700; }
h2 { font-size: var(--font-size-3xl); font-weight: 700; }
h3 { font-size: var(--font-size-2xl); font-weight: 600; }
h4 { font-size: var(--font-size-xl); font-weight: 600; }
h5 { font-size: var(--font-size-lg); font-weight: 600; }
h6 { font-size: var(--font-size-base); font-weight: 600; }

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
}

/* === App Container === */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* === Navigation Sidebar - Enhanced === */
.sidebar {
    background-color: var(--bg-elevated);
    border-right: 1px solid var(--separator-non-opaque);
    height: 100vh;
    position: fixed;
    width: 260px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: width var(--transition-base);
}

/* === Sidebar Collapsed State === */
.sidebar.collapsed {
    width: 70px;
}

.sidebar.collapsed .nav-text,
.sidebar.collapsed .nav-section-title,
.sidebar.collapsed .nav-section-icon {
    display: none;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: var(--space-3);
}

.sidebar.collapsed .nav-section-header {
    justify-content: center;
    padding: var(--space-2);
}

.sidebar.collapsed .nav-icon-wrapper {
    margin: 0;
}

.sidebar.collapsed .nav-divider {
    margin: var(--space-3) var(--space-2);
}

/* Main content adjustment when sidebar is collapsed */
.app-container.sidebar-collapsed .main-content {
    margin-left: 70px;
}

.sidebar-header {
    padding: 0 var(--space-3) var(--space-2);
    border-bottom: 1px solid var(--separator-non-opaque);
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    gap: var(--space-2);
}

/* === Hamburger Menu Button === */
.hamburger-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
    flex-shrink: 0;
}

.hamburger-btn:hover {
    background: var(--color-primary);
    color: white;
}

.hamburger-btn i {
    font-size: 20px;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0;
    transition: all var(--transition-base);
}

.logo-container.hidden,
.app-title.hidden {
    display: none;
}

.sidebar-logo {
    width: 100%;
    max-width: 140px;
    height: auto;
    object-fit: contain;
    transition: transform var(--transition-slow);
    padding: 10px;
}

.sidebar-logo:hover {
    transform: scale(1.02);
}

.app-title {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.app-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.app-version {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    background: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* === Nav Menu - Enhanced === */
.nav-menu {
    flex: 1;
    padding: var(--space-4) 0;
    overflow-y: auto;
}

.nav-section {
    padding: 0 var(--space-3);
    margin-bottom: var(--space-2);
}

.nav-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-1);
}

.nav-section-icon {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.nav-section-title {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-3);
    margin: var(--space-1) 0;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: transparent;
    transition: all var(--transition-base);
}

.nav-icon-wrapper i {
    font-size: var(--font-size-lg);
    transition: transform var(--transition-base);
}

.nav-text {
    flex: 1;
}

.nav-link:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.nav-link:hover .nav-icon-wrapper {
    background: rgba(0, 122, 255, 0.1);
}

.nav-link:hover .nav-icon-wrapper i {
    transform: scale(1.1);
}

.nav-link.active {
    background-color: var(--color-primary);
    color: #FFFFFF;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.nav-link.active .nav-icon-wrapper {
    background: rgba(255, 255, 255, 0.2);
}

.nav-link.active .nav-icon-wrapper i {
    color: #FFFFFF !important;
}

/* ── Metadata collapsible group toggle ── */
.nav-group-toggle {
    display: flex;
    align-items: center;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    gap: var(--space-3);
    cursor: pointer;
    text-align: left;
    transition: background-color var(--transition-fast), color var(--transition-fast);
    margin-bottom: 2px;
}
.nav-group-toggle:hover {
    background-color: var(--bg-tertiary);
    color: var(--color-primary);
}
.nav-group-toggle.open {
    color: var(--color-primary);
    background-color: rgba(74, 144, 217, 0.08);
}
.nav-group-toggle .nav-icon-wrapper {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: transparent;
    transition: background-color var(--transition-fast);
}
.nav-group-toggle:hover .nav-icon-wrapper,
.nav-group-toggle.open .nav-icon-wrapper {
    background-color: rgba(74, 144, 217, 0.12);
}
.nav-group-toggle .nav-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.nav-group-chevron {
    font-size: 0.7rem;
    opacity: 0.5;
    flex-shrink: 0;
    transition: transform 0.2s ease, opacity 0.2s ease;
    margin-left: auto;
}
.nav-group-toggle.open .nav-group-chevron {
    transform: rotate(90deg);
    opacity: 0.9;
}

/* ── Metadata sub-navigation panel ── */
.nav-sub-items {
    display: flex;
    flex-direction: column;
    margin: 0 6px 6px 6px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--separator-non-opaque);
    overflow: hidden;
    padding: 4px 0;
}

/* Section header labels (Library / Assets / Design / ...) */
.nav-sub-header {
    padding: 6px 12px 3px 12px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-tertiary);
    margin-top: 4px;
}
.nav-sub-header:first-child {
    margin-top: 0;
}

/* Individual sub-nav links */
.nav-sub-link {
    display: block;
    padding: 5px 12px 5px 20px;
    font-size: 0.82rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-decoration: none;
    cursor: pointer;
    border-left: 2px solid transparent;
    transition: background-color var(--transition-fast),
                color var(--transition-fast),
                border-left-color var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.nav-sub-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--color-primary);
    border-left-color: rgba(74, 144, 217, 0.4);
    text-decoration: none;
}
.nav-sub-link.active {
    background-color: rgba(74, 144, 217, 0.12);
    color: var(--color-primary);
    font-weight: 600;
    border-left-color: var(--color-primary);
}

/* Dark mode */
[data-bs-theme="dark"] .nav-group-toggle {
    color: var(--text-secondary);
}
[data-bs-theme="dark"] .nav-group-toggle:hover,
[data-bs-theme="dark"] .nav-group-toggle.open {
    background-color: rgba(100, 160, 230, 0.12);
    color: #70b8ff;
}
[data-bs-theme="dark"] .nav-group-toggle:hover .nav-icon-wrapper,
[data-bs-theme="dark"] .nav-group-toggle.open .nav-icon-wrapper {
    background-color: rgba(100, 160, 230, 0.15);
}
[data-bs-theme="dark"] .nav-sub-items {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
}
[data-bs-theme="dark"] .nav-sub-link {
    color: var(--text-secondary);
}
[data-bs-theme="dark"] .nav-sub-link:hover {
    background-color: rgba(100, 160, 230, 0.10);
    color: #70b8ff;
    border-left-color: rgba(100, 160, 230, 0.4);
}
[data-bs-theme="dark"] .nav-sub-link.active {
    background-color: rgba(100, 160, 230, 0.18);
    color: #70b8ff;
    border-left-color: #70b8ff;
}

/* ── Left nav collapsible sub-groups (Library / Assets / Design / Settings) ── */
.nav-sub-items .nav-group {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-sub-items .nav-group:last-child {
    border-bottom: none;
}
[data-bs-theme="light"] .nav-sub-items .nav-group {
    border-bottom-color: rgba(0, 0, 0, 0.07);
}

.nav-sub-items .nav-group-header {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 6px 12px;
    background: none;
    border: none;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-tertiary);
    cursor: pointer;
    gap: 6px;
    text-align: left;
    transition: background 0.15s, color 0.15s;
}
.nav-sub-items .nav-group-header:hover {
    background: var(--bg-tertiary);
    color: var(--color-primary);
}
[data-bs-theme="dark"] .nav-sub-items .nav-group-header:hover {
    background: rgba(100, 160, 230, 0.08);
    color: #70b8ff;
}

.nav-sub-items .nav-chevron {
    margin-left: auto;
    font-size: 0.6rem;
    opacity: 0.45;
    transition: transform 0.2s ease, opacity 0.2s ease;
    flex-shrink: 0;
}
.nav-sub-items .nav-group.open .nav-chevron {
    transform: rotate(90deg);
    opacity: 0.85;
}

.nav-sub-items .nav-group-items {
    display: none;
    padding-bottom: 3px;
}
.nav-sub-items .nav-group.open .nav-group-items {
    display: block;
}

.nav-sub-items .nav-entity {
    display: block;
    width: 100%;
    padding: 5px 12px 5px 24px;
    background: none;
    border: none;
    font-size: 0.82rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-align: left;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-left: 2px solid transparent;
    text-decoration: none;
    transition: background-color var(--transition-fast),
                color var(--transition-fast),
                border-left-color var(--transition-fast);
}
.nav-sub-items .nav-entity:hover {
    background-color: var(--bg-tertiary);
    color: var(--color-primary);
    border-left-color: rgba(74, 144, 217, 0.4);
    text-decoration: none;
}
.nav-sub-items .nav-entity.active {
    background-color: rgba(74, 144, 217, 0.12);
    color: var(--color-primary);
    font-weight: 600;
    border-left-color: var(--color-primary);
}
[data-bs-theme="dark"] .nav-sub-items .nav-entity {
    color: var(--text-secondary);
}
[data-bs-theme="dark"] .nav-sub-items .nav-entity:hover {
    background-color: rgba(100, 160, 230, 0.10);
    color: #70b8ff;
    border-left-color: rgba(100, 160, 230, 0.4);
}
[data-bs-theme="dark"] .nav-sub-items .nav-entity.active {
    background-color: rgba(100, 160, 230, 0.18);
    color: #70b8ff;
    border-left-color: #70b8ff;
}

.nav-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--separator-non-opaque), transparent);
    margin: var(--space-4) var(--space-6);
}

/* ── Blazor error notification bar ── */
#blazor-error-ui {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 0.65rem 1.25rem;
    background: #fff3cd;
    border-top: 1px solid #ffc107;
    color: #664d00;
    z-index: 10000;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.15);
    font-size: 0.88rem;
}
#blazor-error-ui .reload {
    margin-left: 0.5rem;
    font-weight: 600;
    color: #664d00;
    text-decoration: underline;
}
#blazor-error-ui .dismiss {
    float: right;
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    opacity: 0.7;
}
#blazor-error-ui .dismiss:hover {
    opacity: 1;
}
[data-bs-theme="dark"] #blazor-error-ui {
    background: #3b2e00;
    border-top-color: #7a6400;
    color: #f8d85a;
}
[data-bs-theme="dark"] #blazor-error-ui .reload {
    color: #f8d85a;
}

/* === Icons - All Dark Blue === */
/* Navigation Icons */
.bi-speedometer2,
.bi-collection,
.bi-folder,
.bi-file-earmark-text,
.bi-upload,
.bi-download,
.bi-tags,
.bi-gear,
.bi-gear-wide-connected,
.bi-question-circle,
.bi-tools,
.bi-clock-history,
.bi-grid-3x3-gap,
.bi-box-seam,
.bi-box-arrow-in-down,
.bi-database-gear,
.bi-key,
.bi-list-check,
.bi-diagram-3,
.bi-code-slash,
.bi-pencil-fill,
.bi-pencil,
.bi-eye-fill,
.bi-eye,
.bi-plus-circle-fill,
.bi-plus-circle,
.bi-check-circle-fill,
.bi-check-circle,
.bi-arrow-left,
.bi-inbox,
.bi-lightning-charge-fill {
    color: #4A90D9; /* AIForge Dark Blue */
}

/* Delete/Danger icons remain red */
.bi-trash-fill, .bi-trash,
.bi-x-circle-fill, .bi-x-circle {
    color: #D9534F; /* Muted Red */
}

.bi-arrow-right-circle {
    color: inherit;
}

/* Button Icons - keep white on colored backgrounds */
.btn i {
    color: inherit;
}

/* Card Icons */
.card-header i {
    margin-right: var(--space-2);
}

/* Icon color variations for different contexts - AIForge palette */
.icon-primary { color: #4A90D9 !important; }
.icon-secondary { color: #F5A623 !important; }
.icon-success { color: #6B9E78 !important; }
.icon-danger { color: #D9534F !important; }
.icon-warning { color: #F5A623 !important; }
.icon-info { color: #7AB3E8 !important; }
.icon-purple { color: #6B7C8A !important; }
.icon-pink { color: #D9534F !important; }
.icon-orange { color: #F5A623 !important; }
.icon-yellow { color: #F5A623 !important; }
.icon-teal { color: #7AB3E8 !important; }
.icon-indigo { color: #4A90D9 !important; }

/* Icon size utilities */
.icon-sm { font-size: var(--font-size-base); }
.icon-md { font-size: var(--font-size-xl); }
.icon-lg { font-size: var(--font-size-3xl); }
.icon-xl { font-size: var(--font-size-4xl); }

/* === Apple-style Cards - Enhanced === */
.card {
    background-color: var(--bg-elevated);
    border: 1px solid var(--separator-non-opaque);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-spring);
}

.card-hover-lift:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}

.card-body {
    padding: var(--space-4);
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--separator-non-opaque);
    padding: var(--space-5) var(--space-6);
    font-weight: 600;
}

.card-header-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.header-icon-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(88, 86, 214, 0.1);
    border-radius: var(--radius-sm);
}

.header-icon-container i {
    font-size: var(--font-size-lg);
    color: var(--color-secondary);
}

/* === Gradient Cards (Dashboard Stats) === */
/* Updated: Minimal style - no backgrounds, blue icons, black text, compact height */
.card.stat-card.gradient-card-primary,
.card.stat-card.gradient-card-secondary,
.card.stat-card.gradient-card-success,
.card.stat-card.gradient-card-warning,
.card.stat-card.gradient-card-info {
    background: none !important;
    background-color: transparent !important;
    color: #1d1d1f;
    border: 1px solid #e5e5e5;
    box-shadow: none !important;
}

.gradient-card-primary i,
.gradient-card-secondary i,
.gradient-card-success i,
.gradient-card-warning i,
.gradient-card-info i {
    color: #4A90D9 !important;
}

/* Gradient Utility Classes - Updated: Solid blue backgrounds (no gradients) */
.gradient-primary {
    background: #4A90D9;
}

.gradient-secondary {
    background: #4A90D9;
}

.gradient-success {
    background: #4A90D9;
}

.gradient-warning {
    background: #4A90D9;
}

.gradient-info {
    background: #4A90D9;
}

/* === Stat Cards - Enhanced === */
/* Updated: Compact height (85% reduction), minimal style */
.stat-card {
    text-align: center;
    padding: 6px 8px !important;
    position: relative;
    overflow: hidden;
    background: none !important;
    background-color: transparent !important;
}

.stat-card::before {
    display: none !important;
}

.stat-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    margin: 0 auto 2px;
    background: transparent !important;
    border-radius: 4px;
}

.stat-icon-wrapper i {
    font-size: 16px;
    color: #4A90D9 !important;
}

.stat-value {
    font-size: 20px;
    font-weight: 700;
    color: #1d1d1f;
    margin: 2px 0;
    line-height: 1;
}

.stat-label {
    font-size: 10px;
    font-weight: 600;
    color: #6e6e73;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 2px;
}

.stat-sublabel {
    font-size: 9px;
    color: #86868b;
    margin-top: 2px;
}

.stat-badge {
    display: inline-flex;
    align-items: center;
    padding: 1px 6px;
    background: #f5f5f7;
    border-radius: 10px;
    font-size: 9px;
    font-weight: 600;
    color: #6e6e73;
}

/* === Action Cards === */
.action-card {
    text-align: center;
}

.action-card .card-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-8);
}

.action-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-5);
    transition: transform var(--transition-slow);
    background: #4A90D9 !important;
}

.action-card:hover .action-icon-wrapper {
    transform: scale(1.08) rotate(3deg);
}

.action-icon-wrapper i {
    font-size: var(--font-size-3xl);
    color: white !important;
}

.action-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.action-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-5);
    line-height: 1.6;
}

/* === Pack Catalog Cards === */
.pack-card {
    background-color: var(--bg-elevated);
    border: 1px solid var(--separator-non-opaque);
}

.pack-card .card-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--separator-non-opaque);
}

.pack-card .card-title {
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2);
}

.pack-card .card-text {
    color: var(--text-secondary);
}

.pack-card .card-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--separator-non-opaque);
}

.pack-card .version-badge {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

.pack-card .price-tag {
    color: var(--color-primary);
    font-weight: 600;
}

.pack-card.entitled {
    border-color: var(--color-primary);
}

.pack-card.imported {
    border-color: var(--color-success);
}

.pack-card.entitled {
    border-color: var(--color-primary);
}

.pack-card.imported {
    border-color: var(--color-success);
}

/* === Platform / Library Pack Cards (card grid list pages) === */
.platform-card {
    background-color: var(--bg-elevated);
    border: 1px solid var(--separator-non-opaque);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-spring);
}
.platform-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
    border-color: rgba(74, 144, 217, 0.4);
}
.platform-card .card-body {
    padding: var(--space-4) var(--space-5);
}
[data-bs-theme="dark"] .platform-card {
    background-color: var(--bg-elevated);
    border-color: var(--separator-non-opaque);
}

/* === Global list-page polish === */
/* Filter/search bar shared across all list pages */
.card .card-body.py-3 {
    padding-top: 0.6rem !important;
    padding-bottom: 0.6rem !important;
}

/* Tighter compact table rows (Bootstrap table-sm override) */
.table-sm > :not(caption) > * > * {
    padding: 0.22rem 0.5rem;
}
.table-sm thead th {
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--table-head-bg, #f0f4f8);
    border-bottom: 2px solid var(--bs-border-color);
    white-space: nowrap;
}
[data-bs-theme="dark"] .table-sm thead th {
    background: var(--bg-tertiary);
    border-bottom-color: var(--separator-opaque);
}
.table-sm tbody td {
    font-size: 0.82rem;
    vertical-align: middle;
}
/* Row single-line enforcement for all data tables */
.table tbody tr td {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 240px;
}
/* Exceptions: description columns may wrap minimally */
.table tbody tr td.allow-wrap {
    white-space: normal;
    max-width: none;
}

/* Pagination bar consistent styling across all pages */
.pagination {
    --bs-pagination-font-size: 0.8rem;
}
.pagination .page-link {
    padding: 0.25rem 0.55rem;
    min-width: 2rem;
    text-align: center;
}

/* Page header compact version */
.page-header {
    margin-bottom: 1.25rem;
}
.page-subtitle {
    font-size: 0.88rem;
    margin-top: 0.2rem;
    margin-bottom: 0;
}

/* License key cards compact */
.license-key {
    font-size: 0.82rem !important;
    letter-spacing: 0.5px;
}

/* === Icon Container - Solid blue background === */
.icon-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    margin-right: var(--space-4);
    flex-shrink: 0;
    background: #4A90D9 !important;
}

.icon-container i {
    font-size: var(--font-size-xl);
    color: white !important;
}

/* === Buttons - Enhanced - Solid blue (no gradients) === */
.btn {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-spring);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(0) scale(0.98);
}

.btn-primary {
    background: #4A90D9;
    color: #FFFFFF;
}

.btn-primary:hover {
    background: #2E6BB3;
    color: #FFFFFF;
}

.btn-secondary {
    background: #4A90D9;
    color: #FFFFFF;
}

.btn-secondary:hover {
    background: #2E6BB3;
    color: #FFFFFF;
}

.btn-success {
    background: #34C759;
    color: #FFFFFF;
}

.btn-success:hover {
    background: #28A745;
    color: #FFFFFF;
}

.btn-warning {
    background: #4A90D9;
    color: #FFFFFF;
}

.btn-warning:hover {
    background: #2E6BB3;
    color: #FFFFFF;
}

.btn-danger {
    background: #FF3B30;
    color: #FFFFFF;
}

.btn-danger:hover {
    background: #D62518;
    color: #FFFFFF;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--separator-opaque);
}

.btn-outline:hover {
    background: var(--bg-secondary);
    border-color: var(--color-primary);
}

.btn-action {
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-base);
}

.btn-sm {
    font-size: var(--font-size-sm);
    padding: 0.2rem 0.55rem;
    line-height: 1.4;
}

/* Extra-small button for inline table actions */
.btn-xs {
    font-size: 0.72rem;
    padding: 0.15rem 0.4rem;
    line-height: 1.4;
    border-radius: var(--radius-sm);
    transform: none !important;
    box-shadow: none !important;
}
.btn-xs:hover {
    transform: none !important;
    box-shadow: var(--shadow-sm) !important;
}

.btn-lg {
    font-size: var(--font-size-lg);
    padding: var(--space-4) var(--space-6);
}

/* === Tables - Enhanced === */
.table {
    background-color: var(--bg-elevated);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table thead {
    background-color: var(--bg-secondary);
}

.table thead th {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.35rem 0.65rem;
    border-bottom: 1px solid var(--separator-non-opaque);
}

.table tbody td {
    padding: 0.25rem 0.65rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--separator-non-opaque);
    vertical-align: middle;
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table tbody tr:hover {
    background-color: var(--bg-secondary);
}

/* === Badges === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background-color: #4A90D920;
    color: var(--color-primary);
}

.badge-success {
    background-color: #34C75920;
    color: var(--color-success);
}

.badge-danger {
    background-color: #FF3B3020;
    color: var(--color-danger);
}

.badge-warning {
    background-color: #FF950020;
    color: var(--color-warning);
}

.badge-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}

.badge-info {
    background-color: #30B0C720;
    color: #0E7490;
}

/* === Form Controls === */
.form-control {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--separator-opaque);
    border-radius: var(--radius-md);
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    background-size: 16px 12px;
    padding-right: var(--space-8);
}

/* === Search Bar === */
.search-container {
    position: relative;
    margin-bottom: var(--space-6);
}

.search-input {
    padding-left: var(--space-10);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236c757d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cpath d='m21 21-4.35-4.35'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: var(--space-3) center;
    background-size: 20px 20px;
}

/* === Main Content Area === */
.main-content {
    margin-left: 260px;
    padding: var(--space-8) var(--space-8) 4rem var(--space-8);
    min-height: 100vh;
    width: calc(100% - 260px);
}

/* === Top Header Bar === */
.top-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-4);
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 50;
}

.header-title {
    display: flex;
    align-items: center;
}

.header-title .app-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-spacer {
    flex: 1;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding-left: var(--space-3);
    border-left: 1px solid var(--separator-non-opaque);
    margin-left: var(--space-2);
}

.user-name {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sign-out-btn,
.sign-in-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sign-out-btn:hover,
.sign-in-btn:hover {
    background: var(--bg-secondary);
    color: var(--color-primary);
}

.sign-out-btn i {
    font-size: 18px;
}

/* === User Profile Card Dropdown === */
.profile-dropdown-container {
    position: relative;
    padding-left: var(--space-3);
    border-left: 1px solid var(--separator-non-opaque);
    margin-left: var(--space-2);
}

.profile-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-2);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.profile-btn:hover {
    background: var(--bg-secondary);
}

.profile-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #4A90D9;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 12px rgba(0, 122, 255, 0.4), inset 0 1px 0 rgba(255,255,255,0.2);
    border: 2px solid rgba(255, 255, 255, 0.15);
    transition: all var(--transition-fast);
}

.profile-btn:hover .profile-avatar {
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.5), inset 0 1px 0 rgba(255,255,255,0.3);
}

.avatar-initials {
    font-size: 13px;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.profile-chevron {
    font-size: 12px;
    color: var(--text-tertiary);
    transition: transform var(--transition-fast);
}

.profile-chevron.rotated {
    transform: rotate(180deg);
}

.dropdown-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
}

.profile-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 280px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), 0 0 0 1px var(--separator-non-opaque);
    z-index: 1000;
    animation: dropdownFadeIn 0.2s ease-out;
    overflow: hidden;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.profile-card {
    padding: 0;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--bg-secondary);
}

.profile-avatar-large {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #4A90D9;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4), inset 0 2px 0 rgba(255,255,255,0.2);
    border: 3px solid rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

.avatar-initials-large {
    font-size: 20px;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.profile-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.profile-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.profile-role {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    font-weight: 500;
}

.profile-email {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.profile-divider {
    height: 1px;
    background: var(--separator-non-opaque);
}

.profile-actions {
    padding: var(--space-2);
}

.profile-action-btn {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    padding: var(--space-3) var(--space-3);
    background: transparent;
    border: none;
    font-family: inherit;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.profile-action-btn:hover {
    background: var(--bg-secondary);
    color: var(--color-primary);
}

.profile-action-btn i {
    font-size: 18px;
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.profile-action-btn:hover i {
    color: var(--color-primary);
}

/* Sign Out Button - Red styling */
.profile-action-btn.sign-out {
    color: #dc3545;
}

/* Sign Out Form - Ensure form doesn't affect button styling */
.sign-out-form {
    margin: 0;
    padding: 0;
    width: 100%;
}

/* Sign Out Icon Button - Standalone icon button in header */
.sign-out-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    margin-left: var(--space-2);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    color: #dc3545;
    font-size: 18px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sign-out-icon-btn:hover {
    background: rgba(220, 53, 69, 0.1);
    border-color: rgba(220, 53, 69, 0.3);
    color: #c82333;
}

.sign-out-icon-btn:active {
    background: rgba(220, 53, 69, 0.2);
    transform: scale(0.95);
}

.profile-action-btn.sign-out:hover {
    background: rgba(220, 53, 69, 0.1);
    color: #c82333;
}

.profile-action-btn.sign-out i {
    color: #dc3545;
}

.profile-action-btn.sign-out:hover i {
    color: #c82333;
}

.page-header {
    margin-bottom: var(--space-8);
}

.page-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.page-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

/* === Loading States === */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--separator-non-opaque);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.progress-bar {
    height: 4px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: var(--space-4) 0;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

/* === Alerts === */
.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: start;
    gap: var(--space-3);
}

.alert-info {
    background-color: #5AC8FA20;
    border: 1px solid #5AC8FA40;
    color: var(--color-info);
}

.alert-success {
    background-color: #34C75920;
    border: 1px solid #34C75940;
    color: var(--color-success);
}

.alert-warning {
    background-color: #FF950020;
    border: 1px solid #FF950040;
    color: var(--color-warning);
}

.alert-danger {
    background-color: #FF3B3020;
    border: 1px solid #FF3B3040;
    color: var(--color-danger);
}

/* === Utility Classes === */
.text-muted { color: var(--text-tertiary); }
.text-center { text-align: center; }
.text-end { text-align: right; }
.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.fw-medium { font-weight: 500; }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* === Responsive === */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--space-4);
    }
    
    .top-header {
        padding: var(--space-3) 0;
    }
    
    .stat-value {
        font-size: var(--font-size-3xl);
    }
}

/* === Page Header - Enhanced === */
.page-header {
    margin-bottom: var(--space-8);
}

.page-header-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.page-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.page-title .icon-container {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
}

.page-title .icon-container i {
    font-size: var(--font-size-xl);
}

.page-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin: 0;
}

/* === Section Headers === */
.section-header {
    margin-bottom: var(--space-6);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin: 0;
}

/* === Loading States - Enhanced === */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-16) var(--space-8);
}

.loading-spinner-lg {
    display: inline-block;
    width: 48px;
    height: 48px;
    border: 4px solid var(--separator-non-opaque);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-text {
    margin-top: var(--space-4);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

/* === Animations === */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

/* Animation Classes */
.page-enter {
    animation: fadeIn 0.4s ease-out;
}

.animated-fade-in {
    animation: fadeIn 0.5s ease-out;
}

.animated-card {
    animation: slideInFromBottom 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.animated-scale {
    animation: scaleIn 0.3s ease-out;
}

/* Stagger Animation */
.stagger-container .stagger-item {
    opacity: 0;
    animation: slideInFromBottom 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.stagger-container .stagger-item:nth-child(1) { animation-delay: 0.05s; }
.stagger-container .stagger-item:nth-child(2) { animation-delay: 0.1s; }
.stagger-container .stagger-item:nth-child(3) { animation-delay: 0.15s; }
.stagger-container .stagger-item:nth-child(4) { animation-delay: 0.2s; }
.stagger-container .stagger-item:nth-child(5) { animation-delay: 0.25s; }
.stagger-container .stagger-item:nth-child(6) { animation-delay: 0.3s; }

/* === Content Wrapper === */
.content-wrapper {
    width: 100%;
    max-width: 100%;
}

/* === Accessibility === */
.skip-to-main {
    position: absolute;
    left: -9999px;
    z-index: 999;
    padding: 1em;
    background-color: var(--color-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
}

.skip-to-main:focus {
    left: 50%;
    transform: translateX(-50%);
    top: 1em;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus Styles */
*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

/* === Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* === Custom Scrollbar === */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--separator-opaque);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* === Selection Highlight === */
::selection {
    background-color: rgba(0, 122, 255, 0.3);
    color: inherit;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* === Transitions for smoothness === */
a, button, input, select, textarea {
    transition: all var(--transition-base);
}