/* ========== COLOR PALETTE (Logo-Themed) ========== */
:root {
  /* Logo-based color palette */
  --color-primary-dark: #2D5050;      /* Dark teal - main backgrounds */
  --color-primary-darker: #1E4E4E;    /* Darker teal - depth/shadows */
  --color-accent-gold: #F5C542;        /* Golden yellow - buttons, highlights */
  --color-accent-coral: #E55542;       /* Red/coral - CTA buttons, alerts */
  --color-highlight-cream: #F5EDD5;    /* Cream - text on dark backgrounds */

  /* Semantic color assignments */
  --color-bg-main: var(--color-primary-dark);
  --color-bg-card: var(--color-primary-darker);
  --color-text-light: var(--color-highlight-cream);
  --color-text-dark: var(--color-primary-dark);
  --color-button-primary: var(--color-accent-gold);
  --color-button-secondary: var(--color-accent-coral);

  /* Border and shadow effects */
  --border-radius-base: 15px;
  --border-radius-large: 20px;
  --shadow-glow-gold: 0 4px 20px rgba(245, 197, 66, 0.3);
  --shadow-glow-coral: 0 4px 20px rgba(229, 85, 66, 0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--color-bg-main);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: 30px;
}

.header-logo {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
    border-radius: 12px;
    box-shadow: var(--shadow-glow-gold);
}

@media (min-width: 768px) {
    .header-logo {
        width: 120px;
        height: 120px;
    }
}

header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 10px;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.5);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

.screen {
    display: none;
}

.screen.active {
    display: block;
}

/* Join Screen */
.join-form {
    background: white;
    border-radius: var(--border-radius-large);
    border: 4px dotted var(--color-accent-gold);
    padding: 40px;
    max-width: 500px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.join-form h2 {
    margin-bottom: 20px;
    color: var(--color-text-dark);
}

.join-form input {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    margin-bottom: 15px;
    transition: border-color 0.3s;
}

.join-form input:focus {
    outline: none;
    border-color: var(--color-accent-gold);
}

.btn {
    padding: 15px 30px;
    font-size: 1.1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--color-button-primary);
    color: var(--color-text-dark);
    width: 100%;
}

.btn-primary:hover {
    background: #E6B73D;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-gold);
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.player-count {
    text-align: center;
    margin-top: 15px;
    color: #666;
}

/* Game Screen */
.game-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

@media (max-width: 968px) {
    .game-layout {
        grid-template-columns: 1fr;
    }
}

.question-area {
    background: white;
    border-radius: var(--border-radius-large);
    border: 4px dotted var(--color-accent-gold);
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #eee;
}

.question-number {
    font-weight: 600;
    color: var(--color-accent-gold);
    font-size: 1.1rem;
}

.timer {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent-coral);
}

.code-snippet {
    background: #f5f5f5;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    border-left: 4px solid var(--color-accent-gold);
}

.code-snippet code {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 1.2rem;
    color: #333;
}

.question-prompt {
    margin-bottom: 20px;
}

.question-prompt p {
    font-size: 1.2rem;
    font-weight: 500;
    color: #444;
}

.answer-options {
    display: grid;
    gap: 10px;
    margin-bottom: 20px;
}

.answer-option {
    padding: 15px 20px;
    background: #f8f9fa;
    border: 2px solid #ddd;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1.1rem;
    text-align: left;
}

.answer-option:hover {
    border-color: var(--color-accent-gold);
    background: #FFF9E6;
    transform: translateX(5px);
}

.answer-option.selected {
    background: var(--color-accent-gold);
    color: var(--color-text-dark);
    border-color: var(--color-accent-gold);
}

.answer-option.correct {
    background: #10b981;
    color: white;
    border-color: #10b981;
}

.answer-option.incorrect {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

.answer-option.disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.answer-feedback {
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
    display: none;
}

.answer-feedback.show {
    display: block;
}

.answer-feedback.correct {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid #10b981;
}

.answer-feedback.incorrect {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid #ef4444;
}

.answer-feedback .points {
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.answer-feedback .explanation {
    font-size: 0.95rem;
    margin-top: 10px;
    font-style: italic;
}

/* Leaderboard */
.leaderboard-area {
    background: white;
    border-radius: var(--border-radius-large);
    border: 4px dotted var(--color-accent-gold);
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    max-height: 600px;
    overflow-y: auto;
}

.leaderboard-area h3 {
    margin-bottom: 15px;
    color: var(--color-accent-gold);
    text-align: center;
}

.leaderboard-entry {
    display: flex;
    align-items: center;
    padding: 10px;
    margin-bottom: 8px;
    background: #f8f9fa;
    border-radius: 8px;
    transition: transform 0.2s;
}

.leaderboard-entry:hover {
    transform: scale(1.02);
}

.leaderboard-entry.current-player {
    background: #fff4e6;
    border: 2px solid #f59e0b;
}

.rank {
    font-weight: 700;
    font-size: 1.2rem;
    margin-right: 10px;
    min-width: 30px;
    color: var(--color-accent-gold);
}

.rank.first { color: var(--color-accent-gold); }
.rank.second { color: #9ca3af; }
.rank.third { color: #cd7f32; }

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
}

.leaderboard-entry .player-name {
    flex: 1;
    font-weight: 500;
    color: #333;
}

.player-score-display {
    font-weight: 700;
    color: var(--color-accent-gold);
}

.empty-state {
    text-align: center;
    color: #999;
    padding: 20px;
}

/* Player Stats */
.player-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat {
    background: white;
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.stat-label {
    display: block;
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent-gold);
}

/* End Screen */
.end-content {
    background: white;
    border-radius: var(--border-radius-large);
    border: 4px dotted var(--color-accent-gold);
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.end-content h2 {
    text-align: center;
    color: var(--color-accent-gold);
    margin-bottom: 30px;
    font-size: 2.5rem;
}

.winner-announcement {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(245, 197, 66, 0.1);
    border-radius: 10px;
    border: 2px solid var(--color-accent-gold);
}

.winner-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
}

.winner-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

.winner-details {
    text-align: left;
}

.winner-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent-gold);
}

.winner-score {
    font-size: 1.2rem;
    color: #666;
}

.final-leaderboard h3 {
    margin-bottom: 15px;
    color: var(--color-accent-gold);
}

/* Loading states */
.loading {
    text-align: center;
    padding: 20px;
    color: #666;
}

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

.answer-option {
    animation: fadeIn 0.3s ease-out;
}

.answer-option:nth-child(1) { animation-delay: 0.1s; }
.answer-option:nth-child(2) { animation-delay: 0.2s; }
.answer-option:nth-child(3) { animation-delay: 0.3s; }
.answer-option:nth-child(4) { animation-delay: 0.4s; }

/* ========== ROOM & LOBBY STYLES ========== */

.join-options {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: #666;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid #ddd;
}

.divider span {
    padding: 0 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.join-room-form {
    display: flex;
    gap: 0.75rem;
}

.join-room-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-family: 'Courier New', monospace;
    transition: border-color 0.3s;
}

.join-room-form input:focus {
    outline: none;
    border-color: var(--color-accent-gold);
}

.error-message {
    padding: 0.75rem;
    background: rgba(255, 0, 0, 0.2);
    border: 1px solid rgba(255, 0, 0, 0.5);
    border-radius: 8px;
    color: #ff6b6b;
    text-align: center;
    margin-top: 1rem;
}

/* Lobby Screen */
.lobby-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
    animation: fadeIn 0.3s ease-out;
}

.lobby-container h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--color-text-light);
}

.room-info {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.room-code-display,
.room-link-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.room-link-display {
    margin-bottom: 0;
}

.room-code-display label,
.room-link-display label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    min-width: 90px;
}

.room-code {
    font-family: 'Courier New', monospace;
    font-size: 2rem;
    font-weight: bold;
    letter-spacing: 0.3em;
    color: var(--color-accent-gold);
    text-shadow: 0 0 10px rgba(245, 197, 66, 0.5);
    border: 3px dotted var(--color-accent-gold);
    padding: 10px 20px;
    border-radius: 12px;
    background: rgba(245, 197, 66, 0.1);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.players-list {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.players-list h3 {
    margin-bottom: 1rem;
    color: var(--color-text-light);
}

#lobby-players {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.lobby-player {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.lobby-player.host {
    background: linear-gradient(135deg, rgba(245, 197, 66, 0.1), rgba(245, 197, 66, 0.05));
    border: 1px solid rgba(245, 197, 66, 0.3);
}

.lobby-player .player-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-light);
    font-weight: 500;
}

.host-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: rgba(245, 197, 66, 0.2);
    border-radius: 4px;
    color: var(--color-text-dark);
    font-weight: 600;
}

.lobby-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.lobby-actions .btn {
    flex: 1;
    max-width: 200px;
}

.lobby-message {
    margin-top: 1.5rem;
    padding: 0.75rem;
    border-radius: 8px;
    text-align: center;
    display: none;
}

.lobby-message.success {
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid rgba(0, 255, 0, 0.3);
    color: #4ade80;
}

.lobby-message.error {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid rgba(255, 0, 0, 0.3);
    color: #ff6b6b;
}

.lobby-message.info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #60a5fa;
}

/* Button variants */
.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn:disabled:hover {
    transform: none !important;
}

/* Feedback Message (Toast) */
.feedback-message {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    opacity: 0;
    transition: all 0.3s ease-in-out;
    z-index: 1000;
    max-width: 400px;
    text-align: center;
    pointer-events: none;
}

.feedback-message.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.feedback-message.success {
    background-color: #10b981;
    color: white;
}

.feedback-message.error {
    background-color: #ef4444;
    color: white;
}

.feedback-message.info {
    background-color: #3b82f6;
    color: white;
}

/* Join Flow Modes */
.create-game-section,
.join-code-section {
    display: block;
}

.create-game-section.hidden,
.join-code-section.hidden {
    display: none;
}

.link-mode-indicator {
    margin-top: 15px;
    padding: 12px;
    background-color: #f0f9ff;
    border: 2px solid #3b82f6;
    border-radius: 8px;
    color: #1e40af;
    font-weight: 500;
    text-align: center;
}

#link-mode-join-button {
    margin-top: 20px;
    width: 100%;
}

/* Development Journey Message */
.dev-message {
    max-width: 800px;
    margin: 3rem auto 2rem auto;
    padding: 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-top: 3px solid #3b82f6;
    border-radius: 8px;
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    line-height: 1.6;
    color: #1e293b;
}

.dev-message h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: #0f172a;
    font-size: clamp(1.3rem, 3vw, 1.6rem);
    text-align: center;
}

.dev-message p {
    margin-bottom: 1rem;
}

.dev-message p:last-of-type {
    margin-bottom: 0;
}

.dev-message a {
    color: #2563eb;
    text-decoration: underline;
    font-weight: 500;
    transition: color 0.2s ease;
}

.dev-message a:hover {
    color: #1d4ed8;
    text-decoration: none;
}

.dev-message a:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
    border-radius: 2px;
}

.dev-message .signature {
    margin-top: 1.5rem;
    font-style: italic;
    color: #475569;
    text-align: right;
}

/* Mobile Responsive Styles */
@media (max-width: 640px) {
    .dev-message {
        margin: 2rem 1rem 1rem 1rem;
        padding: 1.5rem 1rem;
    }

    .dev-message h3 {
        font-size: 1.3rem;
    }

    .dev-message a {
        /* Ensure touch targets are at least 44px */
        display: inline-block;
        min-height: 44px;
        padding: 0.25rem 0;
    }
}