/* ============================================
   QualiGo Theme System
   Themes: standard, rosa
   Modes: light, dark (via data-bs-theme)
   Typography: Plus Jakarta Sans + Outfit
   ============================================ */

/* --- Standard Theme (Light) --- */
[data-theme="standard"] {
    --qg-primary: #4361ee;
    --qg-primary-light: #6b83f2;
    --qg-primary-subtle: rgba(67, 97, 238, 0.08);
    --qg-secondary: #3f37c9;
    --qg-success: #00c897;
    --qg-success-light: #e6faf4;
    --qg-warning: #ffb830;
    --qg-danger: #ef476f;
    --qg-danger-light: #fde8ed;
    --qg-admin: #2d3436;
    --qg-body-bg: #f0f2f5;
    --qg-body-bg-admin: #ebeef2;
    --qg-sidebar-bg: #fff;
    --qg-sidebar-border: #e4e8ed;
    --qg-sidebar-link: #495057;
    --qg-sidebar-hover: #f0f2f5;
    --qg-card-bg: #fff;
    --qg-card-shadow: rgba(67, 97, 238, 0.06);
    --qg-card-shadow-hover: rgba(67, 97, 238, 0.14);
    --qg-text: #1a1f36;
    --qg-text-muted: #767e8c;
    --qg-gradient-start: #4361ee;
    --qg-gradient-end: #7c3aed;
    --qg-focus-shadow: rgba(67, 97, 238, 0.25);
    --qg-navbar-text: #fff;
    --qg-border-subtle: rgba(0,0,0,0.06);
    --qg-card-accent: var(--qg-primary);
}

/* --- Standard Theme (Dark) --- */
[data-theme="standard"][data-bs-theme="dark"] {
    --qg-body-bg: #0f1117;
    --qg-body-bg-admin: #0c0e13;
    --qg-sidebar-bg: #181b23;
    --qg-sidebar-border: #2a2d38;
    --qg-sidebar-link: #a0a6b4;
    --qg-sidebar-hover: #222530;
    --qg-card-bg: #181b23;
    --qg-card-shadow: rgba(0,0,0,0.35);
    --qg-card-shadow-hover: rgba(67, 97, 238, 0.2);
    --qg-text: #e8eaf0;
    --qg-text-muted: #8a90a0;
    --qg-gradient-start: #3450d6;
    --qg-gradient-end: #6b2fcc;
    --qg-admin: #0f1117;
    --qg-primary-subtle: rgba(67, 97, 238, 0.12);
    --qg-success-light: rgba(0, 200, 151, 0.12);
    --qg-danger-light: rgba(239, 71, 111, 0.12);
    --qg-border-subtle: rgba(255,255,255,0.06);
}

/* --- Rosa Theme (Light) --- */
[data-theme="rosa"] {
    --qg-primary: #e91e8c;
    --qg-primary-light: #f054a8;
    --qg-primary-subtle: rgba(233, 30, 140, 0.08);
    --qg-secondary: #c2185b;
    --qg-success: #4caf50;
    --qg-success-light: #e8f5e9;
    --qg-warning: #ff9800;
    --qg-danger: #ef5350;
    --qg-danger-light: #ffebee;
    --qg-admin: #4a1942;
    --qg-body-bg: #fdf5f9;
    --qg-body-bg-admin: #faeef5;
    --qg-sidebar-bg: #fff;
    --qg-sidebar-border: #f3d5e5;
    --qg-sidebar-link: #6d4c5e;
    --qg-sidebar-hover: #fce4ec;
    --qg-card-bg: #fff;
    --qg-card-shadow: rgba(233,30,140,0.06);
    --qg-card-shadow-hover: rgba(233,30,140,0.14);
    --qg-text: #2a1625;
    --qg-text-muted: #8e6d7e;
    --qg-gradient-start: #e91e8c;
    --qg-gradient-end: #9c27b0;
    --qg-focus-shadow: rgba(233, 30, 140, 0.25);
    --qg-navbar-text: #fff;
    --qg-border-subtle: rgba(233,30,140,0.06);
    --qg-card-accent: var(--qg-primary);
}

/* --- Rosa Theme (Dark) --- */
[data-theme="rosa"][data-bs-theme="dark"] {
    --qg-body-bg: #140c12;
    --qg-body-bg-admin: #100a0e;
    --qg-sidebar-bg: #1e141b;
    --qg-sidebar-border: #3d2a38;
    --qg-sidebar-link: #c9a3b8;
    --qg-sidebar-hover: #2e2029;
    --qg-card-bg: #1e141b;
    --qg-card-shadow: rgba(0,0,0,0.35);
    --qg-card-shadow-hover: rgba(233,30,140,0.2);
    --qg-text: #f0e0ea;
    --qg-text-muted: #b89aab;
    --qg-gradient-start: #c2185b;
    --qg-gradient-end: #7b1fa2;
    --qg-admin: #140c12;
    --qg-primary-subtle: rgba(233,30,140,0.12);
    --qg-success-light: rgba(76,175,80,0.12);
    --qg-danger-light: rgba(239,83,80,0.12);
    --qg-border-subtle: rgba(255,255,255,0.06);
}

/* ============================================
   Animations & Keyframes
   ============================================ */

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.85); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes pulseSuccess {
    0% { transform: scale(1); }
    30% { transform: scale(1.25); }
    50% { transform: scale(0.95); }
    70% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

@keyframes pulseDanger {
    0% { transform: scale(1); }
    25% { transform: scale(1.15); }
    50% { transform: scale(0.95); }
    100% { transform: scale(1); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes bounceIn {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.15); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes confettiBurst {
    0% { opacity: 1; transform: translateY(0) rotate(0deg); }
    100% { opacity: 0; transform: translateY(-80px) rotate(360deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes navUnderline {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

/* ============================================
   Applied Styles (shared across all themes)
   ============================================ */

/* Body / Typography */
body {
    background-color: var(--qg-body-bg) !important;
    color: var(--qg-text);
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    font-family: 'Outfit', 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--qg-text);
}

.navbar-brand {
    font-family: 'Outfit', sans-serif !important;
    letter-spacing: -0.03em;
}

/* Cards – elevated, with accent border and hover lift */
.card {
    background-color: var(--qg-card-bg) !important;
    box-shadow: 0 1px 3px var(--qg-card-shadow), 0 4px 16px var(--qg-card-shadow) !important;
    border: 1px solid var(--qg-border-subtle) !important;
    transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1),
                box-shadow 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

a .card:hover,
a.card:hover,
.card-hover:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px var(--qg-card-shadow-hover), 0 12px 32px var(--qg-card-shadow) !important;
}

/* Card top accent line */
.card-accent {
    border-top: 3px solid var(--qg-card-accent) !important;
}

/* Glassmorphism variant for dark mode */
[data-bs-theme="dark"] .card-glass {
    background: rgba(255,255,255,0.04) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.08) !important;
}

/* Navbar */
.navbar-qg {
    background: linear-gradient(135deg, var(--qg-gradient-start) 0%, var(--qg-gradient-end) 100%) !important;
    border-bottom: none;
    box-shadow: 0 2px 16px rgba(0,0,0,0.12);
}
.navbar-qg-admin {
    background-color: var(--qg-admin) !important;
}

/* Navbar active indicator */
.navbar-qg .nav-link {
    position: relative;
    transition: opacity 0.2s ease;
}
.navbar-qg .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    border-radius: 2px;
    background: #fff;
    animation: navUnderline 0.3s ease forwards;
}

/* Navbar backdrop blur on scroll (class added via JS) */
.navbar-qg.navbar-scrolled {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* Buttons */
.btn-qg {
    background: linear-gradient(135deg, var(--qg-primary), var(--qg-secondary));
    color: #fff;
    border: none;
    font-weight: 600;
    transition: transform 0.15s ease, box-shadow 0.25s ease, filter 0.2s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.btn-qg:hover {
    color: #fff;
    filter: brightness(1.08);
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    transform: translateY(-1px);
}
.btn-qg:active {
    transform: scale(0.97);
    filter: brightness(0.95);
    box-shadow: 0 1px 4px rgba(0,0,0,0.12);
}
.btn-primary {
    background-color: var(--qg-primary) !important;
    border-color: var(--qg-primary) !important;
    font-weight: 600;
    transition: transform 0.15s ease, box-shadow 0.25s ease;
}
.btn-primary:hover {
    background-color: var(--qg-secondary) !important;
    border-color: var(--qg-secondary) !important;
    transform: translateY(-1px);
}
.btn-primary:active {
    transform: scale(0.97);
}

/* All buttons get press effect */
.btn {
    transition: transform 0.12s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn:active:not(:disabled) {
    transform: scale(0.96);
}

/* Option buttons (MC/TF) – bigger, more tactile */
.option-btn {
    border-radius: 0.75rem !important;
    border: 2px solid var(--qg-border-subtle) !important;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.22, 1, 0.36, 1);
    position: relative;
    overflow: hidden;
}
.option-btn:hover:not(:disabled) {
    border-color: var(--qg-primary) !important;
    background-color: var(--qg-primary-subtle) !important;
    color: var(--qg-text) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--qg-card-shadow);
}
.option-btn:active:not(:disabled) {
    transform: scale(0.98);
}
.option-btn.btn-success {
    border-color: var(--qg-success) !important;
    animation: scaleIn 0.35s ease;
}
.option-btn.btn-danger {
    border-color: var(--qg-danger) !important;
    animation: scaleIn 0.35s ease;
}

/* Sidebar (Admin) */
.sidebar {
    background: var(--qg-sidebar-bg) !important;
    border-right-color: var(--qg-sidebar-border) !important;
}
.sidebar .nav-link {
    color: var(--qg-sidebar-link) !important;
    border-radius: 0.5rem;
    margin: 2px 8px;
    transition: all 0.2s ease;
}
.sidebar .nav-link:hover {
    background-color: var(--qg-sidebar-hover) !important;
    transform: translateX(3px);
}
.sidebar .nav-link.active {
    background: linear-gradient(135deg, var(--qg-primary), var(--qg-secondary)) !important;
    color: #fff !important;
    box-shadow: 0 2px 8px var(--qg-focus-shadow);
}

/* Form Focus */
.form-control:focus,
.form-select:focus {
    border-color: var(--qg-primary) !important;
    box-shadow: 0 0 0 0.2rem var(--qg-focus-shadow) !important;
}

/* Dark mode form controls */
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: var(--qg-sidebar-bg);
    border-color: var(--qg-sidebar-border);
    color: var(--qg-text);
}

/* Guest / Auth page */
body.guest-body {
    background: linear-gradient(-45deg, var(--qg-gradient-start), var(--qg-gradient-end), var(--qg-primary-light, var(--qg-primary)), var(--qg-gradient-start)) !important;
    background-size: 300% 300%;
    animation: gradientShift 8s ease infinite;
}
body.guest-body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}
.auth-card {
    background: var(--qg-card-bg) !important;
    animation: scaleIn 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    position: relative;
    z-index: 1;
}
[data-bs-theme="dark"] .auth-card {
    background: rgba(24, 27, 35, 0.9) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
[data-bs-theme="dark"] .auth-brand h1 {
    color: var(--qg-primary);
}
[data-bs-theme="dark"] .auth-brand p {
    color: var(--qg-text-muted);
}

/* Links */
a {
    color: var(--qg-primary);
}
a:hover {
    color: var(--qg-secondary);
}

/* Navbar: text must stay white on colored background */
.navbar-qg,
.navbar-qg-admin {
    color: #fff;
}
.navbar-qg a,
.navbar-qg .nav-link,
.navbar-qg .navbar-brand,
.navbar-qg .dropdown-toggle,
.navbar-qg-admin a,
.navbar-qg-admin .nav-link,
.navbar-qg-admin .navbar-brand,
.navbar-qg-admin .dropdown-toggle {
    color: rgba(255,255,255,0.85) !important;
}
.navbar-qg a:hover,
.navbar-qg .nav-link:hover,
.navbar-qg .nav-link.active,
.navbar-qg .navbar-brand:hover,
.navbar-qg-admin a:hover,
.navbar-qg-admin .nav-link:hover,
.navbar-qg-admin .nav-link.active,
.navbar-qg-admin .navbar-brand:hover {
    color: #fff !important;
}

/* Dropdown menu items inside navbar must NOT be white */
.navbar-qg .dropdown-menu .dropdown-item,
.navbar-qg-admin .dropdown-menu .dropdown-item {
    color: var(--qg-text) !important;
}
.navbar-qg .dropdown-menu .dropdown-item:hover,
.navbar-qg-admin .dropdown-menu .dropdown-item:hover {
    color: var(--qg-text) !important;
    background-color: var(--qg-sidebar-hover) !important;
}

/* Sidebar active link */
.sidebar .nav-link.active {
    color: #fff !important;
}

/* Dropdown in dark mode */
[data-bs-theme="dark"] .dropdown-menu {
    background-color: var(--qg-card-bg);
    border-color: var(--qg-sidebar-border);
}
[data-bs-theme="dark"] .dropdown-item {
    color: var(--qg-text);
}
[data-bs-theme="dark"] .dropdown-item:hover {
    background-color: var(--qg-sidebar-hover);
}

/* Alert theming */
[data-bs-theme="dark"] .alert {
    border: none;
}

/* Table theming */
[data-bs-theme="dark"] .table {
    color: var(--qg-text);
}

/* Badge */
.bg-qg-primary {
    background-color: var(--qg-primary) !important;
}

/* Progress bar */
.progress-bar {
    background: linear-gradient(90deg, var(--qg-primary), var(--qg-gradient-end)) !important;
    transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.progress {
    background-color: var(--qg-primary-subtle, rgba(0,0,0,0.06));
    overflow: hidden;
}

/* Admin body bg */
body.admin-body {
    background-color: var(--qg-body-bg-admin) !important;
}

/* ============================================
   Animation Utility Classes
   ============================================ */

/* Page-load staggered reveal for cards */
.animate-in {
    animation: fadeInUp 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.animate-in:nth-child(1) { animation-delay: 0.05s; }
.animate-in:nth-child(2) { animation-delay: 0.1s; }
.animate-in:nth-child(3) { animation-delay: 0.15s; }
.animate-in:nth-child(4) { animation-delay: 0.2s; }
.animate-in:nth-child(5) { animation-delay: 0.25s; }
.animate-in:nth-child(6) { animation-delay: 0.3s; }

.animate-fade {
    animation: fadeIn 0.4s ease both;
}

.animate-slide-down {
    animation: slideDown 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Feedback card animations */
.feedback-reveal {
    animation: fadeInUp 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.feedback-icon-success {
    animation: bounceIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
    display: inline-block;
}
.feedback-icon-error {
    animation: pulseDanger 0.5s ease both;
    display: inline-block;
}

/* Confetti burst for correct answers */
.confetti-container {
    position: relative;
    display: inline-block;
}
.confetti-container::before,
.confetti-container::after {
    content: '🎉';
    position: absolute;
    font-size: 1.2rem;
    animation: confettiBurst 0.8s ease-out forwards;
    pointer-events: none;
}
.confetti-container::before {
    left: -20px;
    top: 0;
}
.confetti-container::after {
    right: -20px;
    top: 0;
    animation-delay: 0.1s;
}

/* Stat cards – icon background decoration */
.stat-card {
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--qg-primary-subtle);
    transition: transform 0.3s ease;
}
.stat-card:hover::before {
    transform: scale(1.3);
}
.stat-card .stat-icon {
    position: relative;
    z-index: 1;
}

/* Float animation for dashboard emphasis */
.float-subtle {
    animation: float 3s ease-in-out infinite;
}

/* Subject card gradient overlay */
.subject-card {
    position: relative;
    overflow: hidden;
}
.subject-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--qg-primary), var(--qg-gradient-end));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}
a:hover .subject-card::after,
.subject-card:hover::after {
    transform: scaleX(1);
}

/* Breadcrumb subtle animation */
.breadcrumb {
    animation: fadeIn 0.3s ease;
}

/* Badge improvements */
.badge {
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* Alert improvements */
.alert {
    border-radius: 0.75rem;
    border: none;
}

/* Tooltip-like effect for rating buttons */
.btn-rate-question {
    transition: all 0.2s cubic-bezier(0.22, 1, 0.36, 1);
}
.btn-rate-question:hover {
    transform: scale(1.15);
}
.btn-rate-question:active {
    transform: scale(0.9);
}

/* Loading shimmer for async content */
.shimmer {
    background: linear-gradient(90deg, var(--qg-primary-subtle) 25%, rgba(255,255,255,0.1) 50%, var(--qg-primary-subtle) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 0.5rem;
}

/* Touch ripple effect */
.ripple {
    position: relative;
    overflow: hidden;
}
.ripple::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
}
.ripple:active::after {
    opacity: 1;
    transition: opacity 0s;
}

/* Greeting animation */
.greeting {
    animation: fadeInUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.greeting h1 {
    background: linear-gradient(135deg, var(--qg-text), var(--qg-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Review reminder card pulse */
.card-reminder {
    border-left: 4px solid var(--qg-warning) !important;
    animation: fadeInUp 0.5s ease both;
}
.card-reminder:hover {
    border-left-color: var(--qg-primary) !important;
}

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

/* Focus visible ring */
:focus-visible {
    outline: 2px solid var(--qg-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Selection color */
::selection {
    background: var(--qg-primary);
    color: #fff;
}