/* ============================================
   DCISM Aim Trainer - Dark/Neon Gaming Theme
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #151922;
    --bg-tertiary: #1e2635;

    --neon-cyan: #00F5FF;
    --neon-magenta: #FF00FF;
    --neon-green: #39FF14;
    --neon-pink: #FF10F0;
    --neon-blue: #00D4FF;

    --text-primary: #ffffff;
    --text-secondary: #b0b8c4;
    --text-muted: #6b7280;

    --border-color: #2d3748;
    --border-glow: rgba(0, 245, 255, 0.3);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-glow {
    text-shadow: 0 0 10px currentColor;
}

/* Navigation Bar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.3);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-xl);
}

.navbar-brand {
    font-size: 1.8rem;
    font-weight: bold;
    letter-spacing: 2px;
}

.brand-text {
    color: var(--text-primary);
}

.brand-highlight {
    color: var(--neon-cyan);
    text-shadow: 0 0 15px var(--neon-cyan);
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-lg);
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    transition: all var(--transition-normal);
    font-weight: 500;
}

.nav-link:hover,
.nav-link.active {
    color: var(--neon-cyan);
    background: rgba(0, 245, 255, 0.1);
    text-shadow: 0 0 8px var(--neon-cyan);
}

.nav-link.disabled {
    cursor: not-allowed;
    color: var(--text-muted);
    opacity: 0.5;
}

/* Sound Toggle */
.navbar-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sound-toggle {
    background: transparent;
    border: 2px solid var(--neon-cyan);
    border-radius: 8px;
    padding: var(--spacing-sm);
    cursor: pointer;
    color: var(--neon-cyan);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.sound-toggle:hover {
    background: rgba(0, 245, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 245, 255, 0.4);
}

.sound-toggle.muted {
    border-color: var(--text-muted);
    color: var(--text-muted);
}

.sound-toggle.muted:hover {
    background: rgba(107, 114, 128, 0.1);
    box-shadow: none;
}

.sound-icon {
    width: 20px;
    height: 20px;
}

.navbar-auth {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.username-display {
    color: var(--neon-green);
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(57, 255, 20, 0.1);
    border-radius: 4px;
    border: 1px solid rgba(57, 255, 20, 0.3);
}

/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    min-height: calc(100vh - 80px);
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));
    color: var(--bg-primary);
    box-shadow: 0 0 15px rgba(0, 245, 255, 0.4);
}

.btn-primary:hover {
    box-shadow: 0 0 25px rgba(0, 245, 255, 0.6);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: rgba(0, 245, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
}

.btn-highlight {
    background: linear-gradient(135deg, var(--neon-magenta), var(--neon-pink));
    color: white;
    box-shadow: 0 0 15px rgba(255, 0, 255, 0.4);
}

.btn-highlight:hover {
    box-shadow: 0 0 25px rgba(255, 0, 255, 0.6);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 2px solid var(--neon-cyan);
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.4);
}

.modal-large {
    max-width: 700px;
}

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

.modal-header h2 {
    color: var(--neon-cyan);
    font-size: 1.8rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--neon-cyan);
}

.modal-body {
    padding: var(--spacing-lg);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.2);
}

.form-group small {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.form-group.checkbox label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-group.checkbox input {
    width: auto;
}

.form-footer {
    margin-top: var(--spacing-lg);
    text-align: center;
    color: var(--text-secondary);
}

.form-footer a {
    color: var(--neon-cyan);
    text-decoration: none;
}

.form-footer a:hover {
    text-decoration: underline;
}

.error-message {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid rgba(255, 0, 0, 0.3);
    border-radius: 6px;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: #ff6b6b;
}

/* Home View */
.home-view {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
    text-align: center;
}

.home-view h1 {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    color: var(--neon-cyan);
    text-shadow: 0 0 30px rgba(0, 245, 255, 0.6);
}

.home-view p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
}

.home-view .btn {
    font-size: 1.2rem;
    padding: var(--spacing-md) var(--spacing-xl);
}

/* Game Canvas */
.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    position: relative;
}

.game-header {
    width: 100%;
    max-width: 950px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
    background: var(--bg-secondary);
    border: 2px solid var(--neon-cyan);
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.2);
}

.game-stat {
    text-align: center;
}

.game-stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.game-stat-value {
    color: var(--neon-cyan);
    font-size: 2rem;
    font-weight: bold;
    text-shadow: 0 0 10px var(--neon-cyan);
}

.lives-display {
    display: flex;
    margin-top: var(--spacing-md);
    gap: var(--spacing-sm);
}

.life {
    width: 30px;
    height: 30px;
    background: var(--neon-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--neon-green);
    transition: all var(--transition-normal);
}

.life.lost {
    background: #3a3a3a;
    box-shadow: none;
}

#gameCanvas {
    border: 3px solid var(--neon-cyan);
    border-radius: 8px;
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.3);
    background: #0d1117;
    cursor: crosshair;
}

#startGameBtn {
    position: absolute;
    top: 60%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    pointer-events: auto;
    font-size: 1.5rem;
    padding: 1.2rem 3rem;
    min-width: 250px;
}

/* Game Over Stats */
.game-over-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 2px solid var(--border-color);
    text-align: center;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.stat-value {
    color: var(--neon-cyan);
    font-size: 2.5rem;
    font-weight: bold;
    text-shadow: 0 0 15px var(--neon-cyan);
}

.game-over-details {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
}

.game-over-details p {
    margin-bottom: var(--spacing-sm);
}

.new-best {
    color: var(--neon-green);
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 0 0 10px var(--neon-green);
}

.guest-prompt {
    background: rgba(255, 0, 255, 0.1);
    border: 2px solid var(--neon-magenta);
    border-radius: 8px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.guest-prompt .highlight {
    color: var(--neon-magenta);
    font-weight: 600;
}

.game-over-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Leaderboard */
.leaderboard-container {
    max-width: 1000px;
    margin: 0 auto;
}

.leaderboard-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.leaderboard-header h1 {
    font-size: 3rem;
    color: var(--neon-cyan);
    text-shadow: 0 0 20px var(--neon-cyan);
    margin-bottom: var(--spacing-md);
}

.mode-tabs {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.mode-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.mode-tab:hover {
    border-color: var(--neon-cyan);
}

.mode-tab.active {
    background: rgba(0, 245, 255, 0.1);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

.mode-tab.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.leaderboard-table {
    width: 100%;
    background: var(--bg-secondary);
    border: 2px solid var(--neon-cyan);
    border-radius: 8px;
    overflow: hidden;
}

.leaderboard-table table {
    width: 100%;
    border-collapse: collapse;
}

.leaderboard-table thead {
    background: var(--bg-tertiary);
}

.leaderboard-table th {
    padding: var(--spacing-md);
    text-align: left;
    color: var(--neon-cyan);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

.leaderboard-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.leaderboard-table tr:hover {
    background: rgba(0, 245, 255, 0.05);
}

.leaderboard-table tr.current-user {
    background: rgba(57, 255, 20, 0.1);
    border-left: 4px solid var(--neon-green);
}

.rank-badge {
    display: inline-block;
    width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    border-radius: 50%;
    font-weight: bold;
}

.rank-badge.gold {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #000;
}

.rank-badge.silver {
    background: linear-gradient(135deg, #c0c0c0, #e8e8e8);
    color: #000;
}

.rank-badge.bronze {
    background: linear-gradient(135deg, #cd7f32, #e8a04c);
    color: #000;
}

/* Stats Dashboard */
.stats-container {
    max-width: 1200px;
    margin: 0 auto;
}

.stats-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* Version Badge */
.version-badge {
    display: inline-block;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    background: rgba(0, 245, 255, 0.15);
    color: var(--neon-cyan);
    border: 1px solid var(--neon-cyan);
    border-radius: 4px;
    font-weight: 600;
    letter-spacing: 0.5px;
    vertical-align: middle;
    margin-left: var(--spacing-sm);
}

/* Changelog Section */
.changelog-section {
    width: 100%;
    max-width: 600px;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.changelog-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.changelog-list {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.changelog-entry {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: border-color var(--transition-normal);
}

.changelog-entry:hover {
    border-color: var(--neon-cyan);
}

.changelog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.changelog-build {
    font-weight: 700;
    color: var(--neon-cyan);
    font-size: 1rem;
}

.changelog-date {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.changelog-category {
    margin-top: var(--spacing-sm);
}

.changelog-category ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.changelog-category li {
    padding: 0.2rem 0;
    padding-left: 1rem;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.changelog-category li::before {
    position: absolute;
    left: 0;
    font-weight: bold;
}

.changelog-added li::before {
    content: "+";
    color: var(--neon-green);
}

.changelog-changed li::before {
    content: "~";
    color: var(--neon-cyan);
}

.changelog-fixed li::before {
    content: "✓";
    color: var(--neon-magenta);
}

.category-label {
    display: inline-block;
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 0.3rem;
}

.changelog-added .category-label {
    background: rgba(57, 255, 20, 0.15);
    color: var(--neon-green);
}

.changelog-changed .category-label {
    background: rgba(0, 245, 255, 0.15);
    color: var(--neon-cyan);
}

.changelog-fixed .category-label {
    background: rgba(255, 0, 255, 0.15);
    color: var(--neon-magenta);
}

.changelog-view-all {
    display: inline-block;
    margin-top: var(--spacing-md);
}

/* Changelog Full Page */
.changelog-page {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.changelog-page h1 {
    font-size: 2.5rem;
    color: var(--neon-cyan);
    text-shadow: 0 0 20px var(--neon-cyan);
    margin-bottom: var(--spacing-sm);
}

.changelog-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.changelog-page .changelog-list {
    margin-bottom: var(--spacing-xl);
}

/* Mobile Warning */
.mobile-warning {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.warning-content {
    text-align: center;
    padding: var(--spacing-xl);
    max-width: 600px;
}

.warning-content h2 {
    color: var(--neon-magenta);
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
}

.warning-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-menu {
        gap: var(--spacing-sm);
    }

    .nav-link {
        font-size: 0.9rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .game-over-stats {
        grid-template-columns: 1fr;
    }

    .game-over-actions {
        flex-direction: column;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid rgba(0, 245, 255, 0.1);
    border-top: 3px solid var(--neon-cyan);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
    margin: var(--spacing-lg) auto;
}

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

/* Pagination Controls */
.pagination-controls {
    width: 100%;
    margin-bottom: var(--spacing-md);
}

.pagination-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

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

.pagination-rows {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.pagination-rows label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.pagination-rows select {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.pagination-rows select:hover,
.pagination-rows select:focus {
    border-color: var(--neon-cyan);
    outline: none;
}

.pagination-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.pagination-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-pages {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.pagination-page {
    min-width: 32px;
    height: 32px;
    padding: 0 var(--spacing-xs);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-page:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

.pagination-page.active {
    background: rgba(0, 245, 255, 0.15);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

.pagination-ellipsis {
    color: var(--text-muted);
    padding: 0 var(--spacing-xs);
}

@media (max-width: 768px) {
    .pagination-wrapper {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .pagination-info,
    .pagination-rows,
    .pagination-nav {
        justify-content: center;
    }
}