/* 
 * Quizbot Dark Green Theme
 * Modern, reactive, glowing green design
 */

:root {
    /* Color Palette */
    --primary-green: #00ff88;
    --dark-green: #00cc6a;
    --neon-green: #39ff14;
    --bg-dark: #0a0e1a;
    --bg-darker: #060911;
    --bg-card: #141824;
    --bg-card-hover: #1a1f2e;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-muted: #606060;
    --border-color: #2a2f3a;
    --success: #00ff88;
    --danger: #ff4444;
    --warning: #ffaa00;
    --info: #00aaff;
    
    /* Shadows & Glows */
    --glow-green: 0 0 20px rgba(0, 255, 136, 0.3);
    --glow-green-strong: 0 0 30px rgba(0, 255, 136, 0.6);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.6);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.6;
}

/* Public session layout - center content nicely on all screens */
body.public-session-page {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: clamp(1.5rem, 4vh, 3rem) clamp(0.75rem, 4vw, 2.5rem);
}

.public-session-wrapper {
    width: 100%;
    max-width: 1200px;
}

body.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

/* Animated background pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 255, 136, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 255, 136, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Navbar - Thin and Icon-Based */
.navbar {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-darker) 100%) !important;
    border-bottom: 2px solid var(--primary-green);
    box-shadow: var(--glow-green), var(--shadow-card);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.4rem 1rem !important;
    min-height: 50px;
}

.navbar-brand {
    color: var(--primary-green) !important;
    font-weight: 700;
    font-size: 1.2rem;
    text-shadow: var(--glow-green);
    transition: all 0.3s ease;
    padding: 0.3rem 0.5rem !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand:hover {
    color: var(--neon-green) !important;
    text-shadow: var(--glow-green-strong);
    transform: scale(1.05);
}

.navbar-brand i {
    animation: pulse 2s ease-in-out infinite;
    font-size: 1.3rem;
}

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

.brand-text {
    font-size: 1.1rem;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.4rem 0.6rem !important;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border-radius: 6px;
}

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

.nav-link:hover {
    color: var(--primary-green) !important;
    background: rgba(0, 255, 136, 0.1);
}

.nav-link:hover::after {
    width: 80%;
}

.nav-link i {
    font-size: 1.1rem;
    min-width: 20px;
    text-align: center;
}

.nav-text {
    font-size: 0.9rem;
    white-space: nowrap;
}

.user-info {
    color: #ffc107 !important;
    cursor: default;
}

.user-info:hover {
    background: rgba(255, 193, 7, 0.1) !important;
}

/* Badge in navbar */
.badge {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-weight: 600;
    animation: fadeIn 0.5s ease;
}

.bg-danger {
    background: linear-gradient(135deg, #ff4444 0%, #cc0000 100%) !important;
    box-shadow: 0 0 10px rgba(255, 68, 68, 0.4);
}

.bg-warning {
    background: linear-gradient(135deg, #ffaa00 0%, #ff8800 100%) !important;
    box-shadow: 0 0 10px rgba(255, 170, 0, 0.4);
    color: #000 !important;
}

/* Container */
.container {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    padding: 2rem 1rem;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-card);
    animation: slideDown 0.5s ease;
    backdrop-filter: blur(10px);
}

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

.alert-success {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.2) 0%, rgba(0, 204, 106, 0.2) 100%);
    border-left: 4px solid var(--success);
    color: var(--success);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(255, 68, 68, 0.2) 0%, rgba(204, 0, 0, 0.2) 100%);
    border-left: 4px solid var(--danger);
    color: var(--danger);
}

.alert-info {
    background: linear-gradient(135deg, rgba(0, 170, 255, 0.2) 0%, rgba(0, 136, 204, 0.2) 100%);
    border-left: 4px solid var(--info);
    color: var(--info);
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    margin-bottom: 2rem;
    overflow: hidden;
    transition: all 0.3s ease;
    animation: fadeIn 0.5s ease;
}

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

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-elevated), var(--glow-green);
    border-color: var(--primary-green);
}

.card-header {
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-card) 100%);
    border-bottom: 2px solid var(--primary-green);
    padding: 1.5rem;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-green);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    color: var(--primary-green);
    font-weight: 700;
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
    color: #000;
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--neon-green) 0%, var(--primary-green) 100%);
    box-shadow: var(--glow-green-strong);
    transform: translateY(-2px);
    color: #000;
}

.btn-danger {
    background: linear-gradient(135deg, #ff4444 0%, #cc0000 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 68, 68, 0.3);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #ff6666 0%, #ff4444 100%);
    box-shadow: 0 0 20px rgba(255, 68, 68, 0.6);
    transform: translateY(-2px);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-darker) 100%);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--bg-card-hover) 0%, var(--bg-card) 100%);
    border-color: var(--primary-green);
    color: var(--primary-green);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, var(--dark-green) 100%);
    color: #000;
}

.btn-outline-secondary {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline-secondary:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
    background: rgba(0, 255, 136, 0.1);
}

/* Forms */
.form-control, .form-select {
    background: var(--bg-darker);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    background: var(--bg-card);
    border-color: var(--primary-green);
    box-shadow: var(--glow-green);
    color: var(--text-primary);
    outline: none;
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

textarea.form-control {
    min-height: 200px;
    font-family: 'Consolas', 'Monaco', monospace;
}

/* Tables */
.table {
    color: var(--text-primary);
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-card) 100%);
    color: var(--primary-green);
    border: none;
    padding: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    background: var(--bg-card);
    transition: all 0.3s ease;
}

.table tbody tr:hover {
    background: var(--bg-card-hover);
    transform: scale(1.01);
    box-shadow: 0 2px 10px rgba(0, 255, 136, 0.1);
}

.table tbody td {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    vertical-align: middle;
}

.table-responsive {
    border-radius: 12px;
    overflow: hidden;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    color: var(--primary-green);
    font-weight: 700;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    text-shadow: var(--glow-green);
}

h2 {
    font-size: 2rem;
}

/* Quiz List */
.quiz-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.quiz-item:hover {
    border-color: var(--primary-green);
    box-shadow: var(--glow-green);
    transform: translateX(5px);
}

.quiz-title {
    color: var(--primary-green);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.quiz-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.quiz-meta i {
    color: var(--primary-green);
    margin-right: 5px;
}

/* Command box */
.command-box {
    background: var(--bg-darker);
    border: 2px solid var(--primary-green);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-family: 'Consolas', 'Monaco', monospace;
    color: var(--primary-green);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0.5rem 0;
}

.command-box input {
    background: transparent;
    border: none;
    color: var(--primary-green);
    font-family: inherit;
    flex: 1;
    outline: none;
}

/* Loading spinner */
.spinner-border {
    border-color: var(--primary-green);
    border-right-color: transparent;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--neon-green) 0%, var(--primary-green) 100%);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem 0.75rem;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .table {
        font-size: 0.85rem;
    }

    /* Stack public session content a bit tighter on phones */
    body.public-session-page {
        align-items: stretch;
        padding: 1rem 0.5rem;
    }

    .public-session-wrapper {
        max-width: 100%;
    }
    
    /* Icon-only navbar on mobile */
    .nav-text {
        display: none;
    }
    
    .brand-text {
        display: none;
    }
    
    .navbar {
        padding: 0.3rem 0.5rem !important;
    }
    
    .navbar-brand {
        font-size: 1.3rem;
        padding: 0.2rem 0.3rem !important;
    }
    
    .nav-link {
        padding: 0.4rem 0.5rem !important;
    }
    
    .nav-link i {
        font-size: 1.2rem;
        margin: 0;
    }
    
    .badge {
        font-size: 0.6rem;
        padding: 0.15rem 0.3rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    /* Compact text on tablets */
    .nav-text {
        font-size: 0.85rem;
    }
    
    .navbar {
        padding: 0.35rem 0.75rem !important;
    }
}

@media (min-width: 769px) and (max-width: 1200px) {
    body.public-session-page {
        padding: 2rem 1.5rem;
    }
}

/* Utility classes */
.text-muted {
    color: var(--text-muted) !important;
}

.text-success {
    color: var(--success) !important;
}

.text-danger {
    color: var(--danger) !important;
}

.text-warning {
    color: var(--warning) !important;
}

.text-info {
    color: var(--info) !important;
}

/* Glowing elements */
.glow {
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(0, 255, 136, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 255, 136, 0.8);
    }
}

/* Stats cards */
.stat-card {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-darker) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    border-color: var(--primary-green);
    box-shadow: var(--glow-green);
    transform: translateY(-5px);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-green);
    text-shadow: var(--glow-green);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}