/* Sigma Quotient - Custom Styles */

/* Question Source Selector Component */
.question-source-selector {
    margin-bottom: 1rem;
}

.question-source-selector .btn-group {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.question-source-selector .btn {
    border: 2px solid var(--primary-purple);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.question-source-selector .btn:not(.disabled):hover {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(236, 72, 153, 0.1));
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(139, 92, 246, 0.2);
}

.question-source-selector .btn-check:checked + .btn {
    background: var(--gradient-primary);
    border-color: var(--primary-purple);
    color: white;
    transform: scale(1.02);
    z-index: 2;
}

.question-source-selector .btn-check:checked + .btn .text-muted {
    color: rgba(255, 255, 255, 0.8) !important;
}

.question-source-selector .btn.disabled {
    opacity: 0.5;
    background: #f8f9fa;
    border-color: #dee2e6;
    color: #6c757d;
    cursor: not-allowed;
    transform: none !important;
}

.question-source-selector .source-label {
    font-weight: 600;
    display: block;
    margin-bottom: 2px;
}

.question-source-selector .source-count {
    font-size: 0.75rem;
    line-height: 1.2;
    min-height: 1rem;
}

.question-source-selector .form-text {
    font-size: 0.875rem;
    color: var(--dark-gray);
}

.question-source-selector .form-text a {
    color: var(--primary-purple);
    font-weight: 500;
}

.question-source-selector .form-text a:hover {
    color: var(--secondary-pink);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .question-source-selector .btn-group {
        flex-direction: column;
    }
    
    .question-source-selector .btn {
        border-radius: 0;
        margin-bottom: -1px;
    }
    
    .question-source-selector .btn:first-child {
        border-top-left-radius: var(--border-radius);
        border-top-right-radius: var(--border-radius);
    }
    
    .question-source-selector .btn:last-child {
        border-bottom-left-radius: var(--border-radius);
        border-bottom-right-radius: var(--border-radius);
        margin-bottom: 0;
    }
}

/* Animation for smooth transitions */
.question-source-selector .btn {
    animation: sourceButtonLoad 0.3s ease-out;
}

/* Dropdown Menu Fixes */
.navbar .dropdown-menu {
    border: 2px solid #8b5cf6 !important;
    border-radius: 0.5rem !important;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
    background-color: white !important;
    z-index: 9999 !important;
    min-width: 12rem !important;
    position: absolute !important;
    top: calc(100% + 5px) !important;
    right: 0 !important;
    left: auto !important;
    transform: translateY(0) !important;
    margin: 0 !important;
    padding: 0.5rem 0 !important;
}

.navbar .dropdown-menu.show {
    display: block !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
    visibility: visible !important;
    pointer-events: auto !important;
}

/* Playful dropdown theme matching website */
.navbar .dropdown-menu {
    background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 50%, #f59e0b 100%) !important;
    border: 2px solid rgba(255, 255, 255, 0.3) !important;
    border-radius: 1rem !important;
    box-shadow: 0 10px 25px rgba(139, 92, 246, 0.3), 
                0 6px 12px rgba(236, 72, 153, 0.2) !important;
    backdrop-filter: blur(10px);
    padding: 0.75rem 0 !important;
}

.navbar .dropdown-menu.show {
    animation: dropdown-appear 0.3s ease-out !important;
}

@keyframes dropdown-appear {
    0% {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Additional dropdown visibility fixes */
.navbar .dropdown {
    position: relative;
}

/* Fix navbar overflow to allow dropdown visibility */
.navbar {
    overflow: visible !important;
}

.navbar .container {
    overflow: visible !important;
}

/* Ensure dropdown appears above other content */
.navbar .dropdown-menu {
    z-index: 9999 !important;
    position: absolute !important;
}

.navbar .dropdown-toggle::after {
    display: inline-block !important;
    margin-left: 0.255em;
    vertical-align: 0.255em;
    content: "" !important;
    border-top: 0.3em solid;
    border-right: 0.3em solid transparent;
    border-bottom: 0;
    border-left: 0.3em solid transparent;
}

.navbar .dropdown-item {
    padding: 0.75rem 1.5rem !important;
    color: white !important;
    text-decoration: none;
    background-color: transparent;
    border: 0;
    font-weight: 500;
    border-radius: 0.5rem;
    margin: 0.25rem 0.5rem;
    transition: all 0.3s ease;
}

.navbar .dropdown-item:hover,
.navbar .dropdown-item:focus {
    background-color: rgba(255, 255, 255, 0.15) !important;
    color: white !important;
    transform: translateX(5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.navbar .dropdown-item i {
    color: rgba(255, 255, 255, 0.8) !important;
    transition: color 0.3s ease;
}

.navbar .dropdown-item:hover i {
    color: white !important;
}

.navbar .dropdown-divider {
    height: 0;
    margin: 0.5rem 1rem;
    overflow: hidden;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

/* Ensure dropdown is clickable and visible */
.navbar .nav-link.dropdown-toggle {
    cursor: pointer;
}

.navbar .nav-link.dropdown-toggle::after {
    display: inline-block;
    margin-left: 0.255em;
    vertical-align: 0.255em;
    content: "";
    border-top: 0.3em solid;
    border-right: 0.3em solid transparent;
    border-bottom: 0;
    border-left: 0.3em solid transparent;
}

@keyframes sourceButtonLoad {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Root Variables - Fun & Playful Theme */
:root {
    --primary-purple: #8b5cf6;
    --secondary-pink: #ec4899;
    --accent-orange: #f97316;
    --success-green: #10b981;
    --warning-yellow: #fbbf24;
    --danger-coral: #f87171;
    --light-lavender: #faf5ff;
    --bright-cyan: #06b6d4;
    --playful-mint: #34d399;
    --vibrant-blue: #3b82f6;
    --dark-gray: #6b7280;
    --border-radius: 1rem;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --box-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 50%, #f97316 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
}

/* Sigma Quotient Logo Styles */
.navbar-brand .sigma-logo {
    color: var(--accent-orange);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.navbar-brand .quotient-text {
    color: var(--accent-orange);
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.01em;
}

.navbar-brand:hover .sigma-logo,
.navbar-brand:hover .quotient-text {
    color: #ff8c42;
    transition: color 0.2s ease;
}

/* Hero Section Logo - White for visibility on blue background */
.hero-section .sigma-logo,
.hero-section .quotient-text {
    color: white;
}

/* Playful Authentication Cards */
.playful-auth-card {
    border-radius: var(--border-radius) !important;
    box-shadow: var(--box-shadow-lg) !important;
    background: white;
    animation: authCardLoad 0.6s ease-out;
}

.playful-auth-header {
    background: var(--gradient-primary) !important;
    border-radius: calc(var(--border-radius) - 1px) calc(var(--border-radius) - 1px) 0 0 !important;
    position: relative;
    overflow: hidden;
}

.playful-auth-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: auth-header-shine 2s ease-in-out infinite;
}

.playful-auth-body {
    background: linear-gradient(145deg, #ffffff 0%, #faf5ff 100%);
}

.playful-btn-primary {
    background: var(--gradient-primary);
    border: 2px solid transparent;
    color: white;
    font-weight: 600;
    border-radius: var(--border-radius);
    padding: 0.75rem 2rem;
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
    text-transform: none;
    letter-spacing: 0.025em;
}

.playful-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px -3px rgba(139, 92, 246, 0.3), 0 4px 6px -2px rgba(139, 92, 246, 0.05);
    border-color: var(--primary-purple);
}

.playful-btn-primary:active {
    transform: translateY(0);
}

.playful-link {
    color: var(--primary-purple) !important;
    transition: all 0.3s ease;
    font-weight: 500;
}

.playful-link:hover {
    color: var(--secondary-pink) !important;
    text-shadow: 0 0 8px rgba(236, 72, 153, 0.3);
}

.playful-link-bold {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    transition: all 0.3s ease;
}

.playful-link-bold:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

/* Playful Progress Bars */
.playful-progress {
    background-color: rgba(139, 92, 246, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.playful-progress-bar {
    border-radius: 10px;
    transition: all 0.3s ease;
}

.playful-progress-weak {
    background: linear-gradient(90deg, #f87171 0%, #ef4444 100%);
}

.playful-progress-fair {
    background: linear-gradient(90deg, #fbbf24 0%, #f59e0b 100%);
}

.playful-progress-good {
    background: linear-gradient(90deg, #06b6d4 0%, #0891b2 100%);
}

.playful-progress-strong {
    background: var(--gradient-primary);
}

.playful-text-weak {
    color: var(--danger-coral) !important;
    font-weight: 500;
}

.playful-text-fair {
    color: var(--warning-yellow) !important;
    font-weight: 500;
}

.playful-text-good {
    color: var(--bright-cyan) !important;
    font-weight: 500;
}

.playful-text-strong {
    color: var(--success-green) !important;
    font-weight: 600;
}

@keyframes authCardLoad {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes auth-header-shine {
    0% {
        left: -100%;
    }
    50%, 100% {
        left: 100%;
    }
}

/* Playful Form Controls */
.playful-auth-body .form-control {
    border: 2px solid rgba(139, 92, 246, 0.2);
    border-radius: calc(var(--border-radius) * 0.6);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.8);
}

.playful-auth-body .form-control:focus {
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 0.2rem rgba(139, 92, 246, 0.15), 
                0 4px 12px rgba(139, 92, 246, 0.1);
    background: white;
    transform: translateY(-1px);
}

.playful-auth-body .form-control::placeholder {
    color: rgba(139, 92, 246, 0.4);
    font-style: italic;
}

.playful-auth-body .form-label {
    color: var(--dark-gray);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.playful-auth-body .form-check-input {
    border-color: var(--primary-purple);
    border-width: 2px;
}

.playful-auth-body .form-check-input:checked {
    background-color: var(--primary-purple);
    border-color: var(--primary-purple);
}

.playful-auth-body .form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(139, 92, 246, 0.25);
}

/* Global Styles */
body {
    background: var(--light-lavender);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(249, 115, 22, 0.05) 0%, transparent 50%);
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.container {
    max-width: 1400px;
}

/* Playful Navigation */
.playful-navbar {
    background: var(--gradient-primary) !important;
    box-shadow: var(--box-shadow-lg);
    position: relative;
    overflow: hidden;
}

.playful-navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: navbar-shine 3s ease-in-out infinite;
}

@keyframes navbar-shine {
    0% { left: -100%; }
    100% { left: 100%; }
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    position: relative;
    z-index: 2;
}

.rainbow-icon {
    animation: rainbow 3s ease-in-out infinite;
}

@keyframes rainbow {
    0%, 100% { color: #ec4899; }
    16% { color: #f97316; }
    33% { color: #fbbf24; }
    50% { color: #34d399; }
    66% { color: #06b6d4; }
    83% { color: #8b5cf6; }
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: all 0.3s ease-in-out;
    position: relative;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: all 0.3s ease-in-out;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover {
    color: rgba(255, 255, 255, 1) !important;
    transform: translateY(-2px);
}

.navbar-nav .nav-link:hover::after {
    width: 100%;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease-in-out;
    background: linear-gradient(135deg, #ffffff 0%, #fefefe 100%);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    transition: all 0.3s ease-in-out;
}

.card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--box-shadow-lg);
}

.card:hover::before {
    left: 0;
}

.card-header {
    background-color: white;
    border-bottom: 1px solid #e9ecef;
    font-weight: 600;
}

/* Hero Section */
.hero-section {
    background: var(--gradient-primary);
    border: none;
    box-shadow: var(--box-shadow-lg);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 70% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 40%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

/* Practice Mode Styles */
.question-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #1f2937;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 6px solid var(--accent-orange);
    box-shadow: var(--box-shadow-lg);
    position: relative;
    overflow: hidden;
}

.question-text::before {
    content: '💡';
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    opacity: 0.6;
}

#buzz-btn {
    font-size: 1.25rem;
    font-weight: 600;
    padding: 16px 32px;
    border-radius: 50px;
    background: var(--gradient-secondary);
    border: none;
    color: white;
    box-shadow: var(--box-shadow-lg);
    transition: all 0.3s ease-in-out;
    position: relative;
    overflow: hidden;
}

#buzz-btn::before {
    content: '⚡';
    position: absolute;
    left: -30px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    transition: all 0.3s ease-in-out;
}

#buzz-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 25px 30px -5px rgba(0, 0, 0, 0.15), 0 15px 15px -5px rgba(0, 0, 0, 0.1);
}

#buzz-btn:hover::before {
    left: 15px;
    animation: buzz-spark 0.6s ease-in-out infinite;
}

#buzz-btn:active {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--box-shadow);
}

@keyframes buzz-spark {
    0%, 100% { transform: translateY(-50%) scale(1); }
    50% { transform: translateY(-50%) scale(1.2) rotate(10deg); }
}

.session-info .badge {
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { 
        box-shadow: 0 0 5px rgba(139, 92, 246, 0.3);
        transform: scale(1);
    }
    50% { 
        box-shadow: 0 0 15px rgba(139, 92, 246, 0.6);
        transform: scale(1.05);
    }
}

.result-stat h2 {
    font-weight: 700;
    margin-bottom: 0.25rem;
}

/* Flashcard Styles */
.flashcard {
    min-height: 400px;
    position: relative;
    perspective: 1000px;
}

.card-side {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    min-height: 350px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--box-shadow-lg);
    transition: transform 0.3s ease-in-out;
}

.card-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.question-text {
    font-size: 1.1rem;
    line-height: 1.6;
}

.answer-text {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--success-green);
    text-align: center;
}

.card-actions {
    margin-top: 1rem;
}

.card-meta .badge {
    font-size: 0.8rem;
}

/* Analytics Styles */
.performance-circle {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto;
}

.progress {
    height: 8px;
    border-radius: 4px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 4px;
    transition: width 0.3s ease-in-out;
    min-width: 2px; /* BUG-APP-005 FIX: Ensure progress bar is always visible, even at 0% */
}

/* Table Styles */
.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

.question-preview {
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Team Styles */
.team-card {
    transition: transform 0.15s ease-in-out;
}

.team-card:hover {
    transform: translateY(-2px);
}

/* Form Styles */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 0.2rem rgba(139, 92, 246, 0.25);
}

.form-check-input:checked {
    background: var(--gradient-primary);
    border-color: var(--primary-purple);
}

/* Button Styles */
.btn {
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all 0.15s ease-in-out;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transition: all 0.3s ease-in-out;
    transform: translate(-50%, -50%);
}

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

.btn-primary:hover::before {
    width: 100px;
    height: 100px;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-green) 0%, var(--playful-mint) 100%);
    border: none;
    box-shadow: var(--box-shadow);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--playful-mint) 0%, var(--success-green) 100%);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-yellow) 0%, var(--accent-orange) 100%);
    border: none;
    color: #1f2937;
    box-shadow: var(--box-shadow);
    font-weight: 600;
}

.btn-warning:hover {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--warning-yellow) 100%);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
    color: #1f2937;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-coral) 0%, #f87171 100%);
    border: none;
    color: white;
    box-shadow: var(--box-shadow);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #f87171 0%, var(--danger-coral) 100%);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, var(--bright-cyan) 0%, var(--electric-blue) 100%);
    border: none;
    color: white;
    box-shadow: var(--box-shadow);
}

.btn-info:hover {
    background: linear-gradient(135deg, var(--electric-blue) 0%, var(--bright-cyan) 100%);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--dark-gray) 0%, #9ca3af 100%);
    border: none;
    color: white;
    box-shadow: var(--box-shadow);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #9ca3af 0%, var(--dark-gray) 100%);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
    color: white;
}

/* Outline Button Styles */
.btn-outline-primary {
    border: 2px solid var(--primary-purple);
    color: var(--primary-purple);
    background: transparent;
    position: relative;
    overflow: hidden;
}

.btn-outline-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: all 0.3s ease-in-out;
    z-index: -1;
}

.btn-outline-primary:hover {
    color: white;
    border-color: var(--primary-purple);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.btn-outline-primary:hover::before {
    left: 0;
}

.btn-outline-success {
    border: 2px solid var(--success-green);
    color: var(--success-green);
    background: transparent;
    position: relative;
    overflow: hidden;
}

.btn-outline-success::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--success-green) 0%, var(--playful-mint) 100%);
    transition: all 0.3s ease-in-out;
    z-index: -1;
}

.btn-outline-success:hover {
    color: white;
    border-color: var(--success-green);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.btn-outline-success:hover::before {
    left: 0;
}

.btn-outline-warning {
    border: 2px solid var(--warning-yellow);
    color: var(--accent-orange);
    background: transparent;
    position: relative;
    overflow: hidden;
    font-weight: 600;
}

.btn-outline-warning::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--warning-yellow) 0%, var(--accent-orange) 100%);
    transition: all 0.3s ease-in-out;
    z-index: -1;
}

.btn-outline-warning:hover {
    color: #1f2937;
    border-color: var(--warning-yellow);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.btn-outline-warning:hover::before {
    left: 0;
}

.btn-outline-danger {
    border: 2px solid var(--danger-coral);
    color: var(--danger-coral);
    background: transparent;
    position: relative;
    overflow: hidden;
}

.btn-outline-danger::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--danger-coral) 0%, #f87171 100%);
    transition: all 0.3s ease-in-out;
    z-index: -1;
}

.btn-outline-danger:hover {
    color: white;
    border-color: var(--danger-coral);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.btn-outline-danger:hover::before {
    left: 0;
}

.btn-outline-info {
    border: 2px solid var(--bright-cyan);
    color: var(--bright-cyan);
    background: transparent;
    position: relative;
    overflow: hidden;
}

.btn-outline-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bright-cyan) 0%, var(--electric-blue) 100%);
    transition: all 0.3s ease-in-out;
    z-index: -1;
}

.btn-outline-info:hover {
    color: white;
    border-color: var(--bright-cyan);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.btn-outline-info:hover::before {
    left: 0;
}

.btn-outline-secondary {
    border: 2px solid var(--dark-gray);
    color: var(--dark-gray);
    background: transparent;
    position: relative;
    overflow: hidden;
}

.btn-outline-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark-gray) 0%, #9ca3af 100%);
    transition: all 0.3s ease-in-out;
    z-index: -1;
}

.btn-outline-secondary:hover {
    color: white;
    border-color: var(--dark-gray);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

.btn-outline-secondary:hover::before {
    left: 0;
}

/* Badge Styles */
.badge {
    font-weight: 600;
    font-size: 0.75rem;
    border-radius: 50px;
    padding: 0.5rem 1rem;
    position: relative;
    overflow: hidden;
}

.badge.bg-primary {
    background: var(--gradient-primary) !important;
}

.badge.bg-success {
    background: var(--success-green) !important;
}

.badge.bg-warning {
    background: var(--warning-yellow) !important;
    color: #1f2937 !important;
}

.badge.bg-info {
    background: var(--bright-cyan) !important;
}

.badge.bg-secondary {
    background: linear-gradient(135deg, var(--dark-gray) 0%, #9ca3af 100%) !important;
}

/* Alert Styles */
.alert {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(52, 211, 153, 0.1) 100%);
    border-left: 4px solid var(--success-green);
    color: #065f46;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.1) 0%, rgba(252, 165, 165, 0.1) 100%);
    border-left: 4px solid var(--danger-coral);
    color: #7f1d1d;
}

.alert-warning {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1) 0%, rgba(249, 115, 22, 0.1) 100%);
    border-left: 4px solid var(--warning-yellow);
    color: #92400e;
}

.alert-info {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
    border-left: 4px solid var(--bright-cyan);
    color: #0c4a6e;
}

/* Playful Footer */
footer {
    margin-top: auto;
    border-top: none;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

/* Category Selection */
.category-select,
.difficulty-select {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    padding: 0.75rem;
    background-color: white;
}

.category-select .form-check,
.difficulty-select .form-check {
    margin-bottom: 0.5rem;
}

/* Live Stats */
#live-stats .card-body {
    padding: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
    }
    
    .hero-section .display-6 {
        font-size: 2rem;
    }
    
    .question-text {
        font-size: 1rem;
        padding: 1rem;
    }
    
    .card-side {
        padding: 1.5rem;
        min-height: 300px;
    }
    
    #buzz-btn {
        font-size: 1.1rem;
        padding: 10px 20px;
    }
    
    .session-info {
        margin-top: 0.5rem;
    }
    
    .session-info .badge {
        font-size: 0.75rem;
        padding: 0.375rem 0.5rem;
        margin-bottom: 0.25rem;
        display: inline-block;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-group .btn {
        padding: 0.375rem 0.5rem;
        font-size: 0.875rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .performance-circle {
        width: 120px;
        height: 120px;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Animation Keyframes */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Playful Loading Animation */
@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0,0,0);
    }
    40%, 43% {
        transform: translate3d(0, -30px, 0);
    }
    70% {
        transform: translate3d(0, -15px, 0);
    }
    90% {
        transform: translate3d(0,-4px,0);
    }
}

.bounce {
    animation: bounce 1s ease infinite;
}

/* Fun success/error states */
.success-wiggle {
    animation: wiggle 0.5s ease-in-out;
}

@keyframes wiggle {
    0%, 7% { transform: rotateZ(0); }
    15% { transform: rotateZ(-15deg); }
    20% { transform: rotateZ(10deg); }
    25% { transform: rotateZ(-10deg); }
    30% { transform: rotateZ(6deg); }
    35% { transform: rotateZ(-4deg); }
    40%, 100% { transform: rotateZ(0); }
}

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

/* Focus styles for keyboard navigation */
.btn:focus,
.form-control:focus,
.form-select:focus,
.form-check-input:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid #000;
    }
    
    .btn {
        border-width: 2px;
    }
    
    .question-text {
        border-left-width: 6px;
    }
}

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


/* Dashboard Stats Cards - Force Visibility */
.card.bg-success,
.card.bg-info,
.card.bg-warning {
    color: white !important;
}

.card.bg-success h3,
.card.bg-info h3,
.card.bg-warning h3,
.card.bg-success p,
.card.bg-info p,
.card.bg-warning p {
    color: white !important;
    opacity: 1 !important;
    display: block !important;
    visibility: visible !important;
}

/* Filter Enhancement Styles */
#filter-preview {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 2px dashed var(--primary-purple);
    border-radius: var(--border-radius);
    transition: all 0.3s ease-in-out;
    position: relative;
}

#filter-preview:hover {
    border-color: var(--secondary-pink);
    background: linear-gradient(135deg, #faf5ff 0%, #f8fafc 100%);
    transform: scale(1.02);
}

#filter-preview::before {
    content: '🔍';
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.2rem;
    opacity: 0.6;
}

/* Debug Information Styles */
#debug-info {
    border: 2px solid var(--warning-yellow);
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.05) 0%, rgba(249, 115, 22, 0.05) 100%);
}

#debug-info .card-header {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1) 0%, rgba(249, 115, 22, 0.1) 100%);
    border-bottom: 1px solid var(--warning-yellow);
}

#debug-details {
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    background-color: #f8f9fa;
    border-radius: 6px;
    padding: 1rem;
    border-left: 4px solid var(--warning-yellow);
}

/* Question Source Badge */
#question-source {
    transition: all 0.3s ease-in-out;
}

#question-source .badge {
    animation: source-pulse 2s ease-in-out infinite;
}

@keyframes source-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

/* Enhanced Alert Styles for Filter Messages */
.alert h6 {
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.alert ul {
    margin-bottom: 0;
    padding-left: 1.25rem;
}

.alert ul li {
    margin-bottom: 0.25rem;
}

/* Reset Filters Button */
#reset-filters {
    transition: all 0.3s ease-in-out;
    position: relative;
    overflow: hidden;
}

#reset-filters::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(108, 117, 125, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease-in-out;
    transform: translate(-50%, -50%);
}

#reset-filters:hover {
    transform: translateY(-2px) rotate(-5deg);
}

#reset-filters:hover::before {
    width: 100px;
    height: 100px;
}

/* Enhanced Message Animations */
#filter-status,
#filter-summary,
#filter-success,
#filter-troubleshoot,
#filter-warnings {
    animation: slideInUp 0.4s ease-out;
}

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

/* Filter Status Messages */
#filter-status .alert {
    border-left: 4px solid var(--bright-cyan);
    position: relative;
}

#filter-success .alert {
    border-left: 4px solid var(--success-green);
    position: relative;
    overflow: hidden;
}

#filter-success .alert::before {
    content: '✨';
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.2rem;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2) rotate(180deg);
        opacity: 1;
    }
}

#filter-troubleshoot .alert {
    border-left: 4px solid var(--warning-yellow);
}

#filter-warnings .alert {
    border-left: 4px solid var(--accent-orange);
    position: relative;
}

#filter-warnings .alert::before {
    content: '⚠️';
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.1rem;
    animation: warning-pulse 1.5s ease-in-out infinite;
}

@keyframes warning-pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Debug Toggle Styling */
#debug-toggle {
    accent-color: var(--warning-yellow);
}

#debug-toggle + label {
    cursor: pointer;
    transition: color 0.3s ease-in-out;
}

#debug-toggle:checked + label {
    color: var(--accent-orange);
    font-weight: 600;
}

/* Responsive enhancements for filter elements */
@media (max-width: 768px) {
    #filter-preview {
        padding: 1rem !important;
        margin-bottom: 1rem !important;
    }
    
    #filter-preview .small {
        font-size: 0.8rem;
    }
    
    .d-flex.gap-2 {
        flex-direction: column;
        gap: 0.5rem !important;
    }
    
    .d-flex.gap-2 .btn {
        width: 100%;
    }
    
    #debug-details {
        padding: 0.75rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 576px) {
    #filter-preview::before {
        display: none;
    }
    
    .alert h6 {
        font-size: 0.9rem;
    }
    
    .alert .small,
    .alert ul li {
        font-size: 0.8rem;
    }
}

/* ============================================
   Admin Dashboard Styles
   ============================================ */

/* Admin Icon Boxes for Statistics Cards */
.icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

/* Admin Statistics Cards */
.admin-stat-card {
    transition: all 0.3s ease;
}

.admin-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1) !important;
}

/* Admin Table Styles */
#usersTable tbody tr {
    transition: all 0.2s ease;
}

#usersTable tbody tr:hover {
    background-color: rgba(139, 92, 246, 0.05);
}

/* Admin Toggle Switches */
.admin-toggle {
    cursor: pointer;
}

.admin-toggle:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

/* Delete Button Hover Effect */
.delete-user:hover {
    transform: scale(1.05);
}

/* Breadcrumb Styling */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: #6c757d;
    font-size: 1.2rem;
}

.breadcrumb-item a {
    color: var(--primary-purple);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb-item a:hover {
    color: var(--accent-pink);
}

/* Admin Card Headers */
.admin-card-header {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05), rgba(236, 72, 153, 0.05));
    border-bottom: 2px solid var(--primary-purple);
}

/* Loading States for Admin Actions */
.admin-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.admin-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Admin Badge Styles */
.badge.bg-danger {
    background: linear-gradient(135deg, #dc3545, #c82333) !important;
}

/* Admin Charts Container */
.admin-chart-container {
    position: relative;
    height: 300px;
}

/* Responsive Admin Styles */
@media (max-width: 768px) {
    .icon-box {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    #usersTable {
        font-size: 0.9rem;
    }

    .table-responsive {
        overflow-x: auto;
    }
}

/* Admin Alert Styles */
.admin-alert {
    border-left: 4px solid var(--primary-purple);
    background: rgba(139, 92, 246, 0.05);
}

/* Admin Modal Customizations */
.modal-header {
    border-bottom: 2px solid var(--primary-purple);
}

.modal-footer {
    border-top: 2px solid #dee2e6;
}

/* Admin Search Bar */
.admin-search-bar {
    border: 2px solid var(--primary-purple);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
}

.admin-search-bar:focus {
    box-shadow: 0 0 0 0.2rem rgba(139, 92, 246, 0.25);
    border-color: var(--accent-pink);
}

/* ============================================
   Word-by-Word Question Streaming Styles
   ============================================ */

/* Timer display in question card header */
.timer-display {
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--accent-purple);
    background: rgba(139, 92, 246, 0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 0.5rem;
    border: 2px solid var(--primary-purple);
    min-width: 80px;
    text-align: center;
}

.timer-display i {
    color: var(--primary-purple);
}

/* Streamed word animation - words appear with a fade-in effect */
.streamed-word {
    display: inline;
    opacity: 0;
    animation: wordFadeIn 0.15s ease-out forwards;
}

@keyframes wordFadeIn {
    from {
        opacity: 0;
        transform: translateY(3px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Remaining words (revealed after answer submission) - styled differently */
.remaining-word {
    display: inline;
    color: #6b7280;
    opacity: 0;
    animation: remainingFadeIn 0.3s ease-out forwards;
}

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

/* Speed control slider styling */
.speed-control-inline {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.speed-control-inline .form-range {
    width: 150px;
    accent-color: var(--primary-purple);
}

/* Speed slider in setup form */
#streaming-speed {
    accent-color: var(--primary-purple);
}

#streaming-speed:hover {
    cursor: pointer;
}

/* Live speed slider during practice */
#live-speed {
    accent-color: var(--warning-yellow);
}

#live-speed:hover {
    cursor: pointer;
}

/* Reversed speed slider - drag right for faster (lower ms value) */
.speed-slider-reversed {
    direction: rtl;
}

/* Question text container adjustments for streaming */
.question-text {
    min-height: 100px;
    line-height: 1.8;
}

/* Responsive adjustments for streaming controls */
@media (max-width: 768px) {
    .timer-display {
        font-size: 0.9rem;
        padding: 0.3rem 0.6rem;
        min-width: 70px;
    }

    .speed-control-inline {
        flex-wrap: wrap;
        justify-content: center;
    }

    .speed-control-inline .form-range {
        width: 120px;
    }

    .session-info {
        margin-top: 0.5rem;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .timer-display {
        font-size: 0.85rem;
        padding: 0.25rem 0.5rem;
    }

    .speed-control-inline .form-range {
        width: 100px;
    }
}