@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;700&family=Crimson+Text:wght@400;600&display=swap');

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

:root {
    --sand-light: #e8dcc8;
    --sand-dark: #c9a86c;
    --stone-light: #f5f0e8;
    --stone-dark: #2a2520;
    --gold: #C5A059;
    --white-stone: #ffffff;
    --black-stone: #1a1a1a;
    --red-stone: #cc3333;
    --blue-stone: #3366cc;
    --deadly-indicator: #000000;
    --normal-indicator: #88ccff;
    --menu-width: 320px;
    --transition-speed: 0.4s;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Crimson Text', serif;
    background: #1a1510;
    color: var(--stone-light);
}

#game-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: #1a1510;
}

.canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: auto;
    touch-action: none;
}

.canvas-container.hidden {
    display: none;
}

#canvas-2d canvas {
    width: 100% !important;
    height: 100% !important;
}

#game-container canvas {
    display: block;
}

/* Top Bar */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(180deg, rgba(26, 21, 16, 0.95) 0%, rgba(26, 21, 16, 0) 100%);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 100;
}

.top-bar-link {
    font-family: 'Cinzel', serif;
    font-size: 0.9rem;
    padding: 10px 18px;
    background: rgba(197, 160, 89, 0.15);
    border: 1px solid var(--gold);
    color: var(--stone-light);
    cursor: pointer;
    transition: all 0.3s;
    border-radius: 6px;
    letter-spacing: 0.03em;
    backdrop-filter: blur(10px);
    text-decoration: none;
    display: inline-block;
}

.top-bar-link:hover {
    background: rgba(197, 160, 89, 0.3);
    transform: translateY(-2px);
}

.top-bar-btn,
.top-bar-btn.back-link {
    font-family: 'Cinzel', serif;
    font-size: 0.9rem;
    padding: 10px 18px;
    background: rgba(197, 160, 89, 0.15);
    border: 1px solid var(--gold);
    color: var(--stone-light);
    cursor: pointer;
    transition: all 0.3s;
    border-radius: 6px;
    letter-spacing: 0.03em;
    backdrop-filter: blur(10px);
    text-decoration: none;
    display: inline-block;
}

.top-bar-btn:hover {
    background: rgba(197, 160, 89, 0.3);
    transform: translateY(-2px);
}

.top-bar-btn.active {
    background: rgba(197, 160, 89, 0.4);
    border-color: var(--gold);
}

.menu-toggle-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    width: 44px;
    height: 44px;
    padding: 0;
}

.menu-toggle-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--gold);
    transition: all 0.3s;
}

.menu-toggle-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.menu-toggle-btn.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Menu Toggle Button - now part of top-bar */
.menu-toggle-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    width: 44px;
    height: 44px;
    padding: 0;
}

.menu-toggle-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--gold);
    transition: all 0.3s;
}

.menu-toggle-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.menu-toggle-btn.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Side Menu */
.side-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--menu-width);
    height: 100%;
    background: linear-gradient(180deg, rgba(26, 21, 16, 0.97) 0%, rgba(20, 16, 12, 0.98) 100%);
    border-left: 2px solid var(--gold);
    z-index: 999;
    transform: translateX(100%);
    transition: transform var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(20px);
}

.side-menu.open {
    transform: translateX(0);
    overflow-y: auto;
}

.menu-content {
    padding: 80px 24px 40px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.game-title {
    font-family: 'Cinzel', serif;
    font-size: 2rem;
    text-align: center;
    color: var(--gold);
    letter-spacing: 0.15em;
    text-shadow: 0 2px 10px rgba(197, 160, 89, 0.3);
    margin-bottom: 10px;
}

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

.current-player-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 20px;
    background: rgba(197, 160, 89, 0.1);
    border: 1px solid rgba(197, 160, 89, 0.3);
    border-radius: 8px;
}

.player-indicator {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--gold);
    transition: background-color 0.3s;
}

.player-indicator.white {
    background: var(--white-stone);
}

.player-indicator.black {
    background: var(--black-stone);
}

.player-indicator.red {
    background: var(--red-stone);
}

.player-indicator.blue {
    background: var(--blue-stone);
}

#player-name {
    font-family: 'Cinzel', serif;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

.stone-counts-display {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.count-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    font-size: 1.1rem;
}

.count-stone {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.count-stone.white {
    background: var(--white-stone);
}

.count-stone.black {
    background: var(--black-stone);
}

.count-stone.red {
    background: var(--red-stone);
}

.count-stone.blue {
    background: var(--blue-stone);
}

.count-item.victory {
    flex-direction: column;
    gap: 2px;
    font-size: 0.85rem;
    color: var(--gold);
}

.menu-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.3;
}

.menu-btn {
    font-family: 'Cinzel', serif;
    font-size: 1rem;
    padding: 14px 24px;
    background: linear-gradient(135deg, rgba(197, 160, 89, 0.2), rgba(197, 160, 89, 0.1));
    border: 1px solid var(--gold);
    color: var(--stone-light);
    cursor: pointer;
    transition: all 0.3s;
    border-radius: 6px;
    letter-spacing: 0.05em;
}

.menu-btn:hover {
    background: linear-gradient(135deg, rgba(197, 160, 89, 0.4), rgba(197, 160, 89, 0.2));
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(197, 160, 89, 0.3);
}

.menu-btn.rules-btn {
    background: linear-gradient(135deg, rgba(100, 90, 80, 0.3), rgba(80, 70, 60, 0.2));
    border-color: rgba(150, 140, 130, 0.5);
}

.controls-info {
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    font-size: 0.9rem;
    line-height: 1.8;
}

.controls-info h3 {
    font-family: 'Cinzel', serif;
    color: var(--gold);
    margin-bottom: 8px;
    font-size: 1rem;
}

.controls-info p {
    opacity: 0.8;
}

.back-link-container {
    text-align: center;
    margin-top: 10px;
}

.back-link {
    color: var(--gold);
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.back-link:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Game Message */
.game-message {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    padding: 16px 32px;
    background: rgba(26, 21, 16, 0.95);
    border: 2px solid var(--gold);
    border-radius: 8px;
    font-family: 'Cinzel', serif;
    font-size: 1.1rem;
    z-index: 100;
    animation: messageIn 0.3s ease-out;
    backdrop-filter: blur(10px);
}

.game-message.hidden {
    display: none;
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* Game Over Overlay */
.game-over-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.game-over-overlay.hidden {
    display: none;
}

.game-over-content {
    background: linear-gradient(145deg, rgba(30, 25, 20, 0.98), rgba(20, 16, 12, 0.98));
    border: 3px solid var(--gold);
    padding: 48px 64px;
    text-align: center;
    border-radius: 12px;
    animation: modalIn 0.4s ease-out;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.game-over-content h2 {
    font-family: 'Cinzel', serif;
    font-size: 2.5rem;
    color: var(--gold);
    margin-bottom: 16px;
    letter-spacing: 0.1em;
}

.game-over-content p {
    font-size: 1.2rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

.game-over-content .menu-btn {
    min-width: 200px;
}

/* Rules Modal */
.rules-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.rules-modal.hidden {
    display: none;
}

.rules-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.rules-panel {
    position: relative;
    background: linear-gradient(145deg, rgba(35, 28, 22, 0.98), rgba(25, 20, 16, 0.98));
    border: 2px solid var(--gold);
    padding: 36px 40px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    border-radius: 12px;
    z-index: 1;
    animation: modalIn 0.3s ease-out;
}

.rules-panel h2 {
    font-family: 'Cinzel', serif;
    font-size: 1.8rem;
    color: var(--gold);
    text-align: center;
    margin-bottom: 24px;
    letter-spacing: 0.1em;
}

.rules-scroll {
    max-height: 50vh;
    overflow-y: auto;
    padding-right: 10px;
}

.rules-scroll::-webkit-scrollbar {
    width: 6px;
}

.rules-scroll::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

.rules-scroll::-webkit-scrollbar-thumb {
    background: var(--gold);
    border-radius: 3px;
}

.rules-scroll p {
    margin-bottom: 16px;
    line-height: 1.7;
    font-size: 1rem;
}

.rules-scroll strong {
    color: var(--gold);
    font-family: 'Cinzel', serif;
    display: block;
    margin-bottom: 4px;
}

.rules-scroll em {
    color: #ff6b6b;
    font-style: italic;
}

.close-rules-btn {
    display: block;
    margin: 24px auto 0;
    width: 100%;
}

.rules-close-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(42, 37, 32, 0.8);
    color: #f5f1e8;
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
    z-index: 10;
}

.rules-close-btn:hover {
    background: var(--gold);
    color: var(--dark-stone);
    transform: scale(1.1);
}

/* Responsive */
@media (max-width: 480px) {
    :root {
        --menu-width: 280px;
    }
    
    .game-title {
        font-size: 1.6rem;
    }
    
    .menu-content {
        padding: 70px 18px 30px;
    }
}

/* 4 Player Mode - Smaller fonts */
.side-menu.four-players .game-title {
    font-size: 1.4rem;
}

.side-menu.four-players .menu-btn {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.side-menu.four-players .player-info {
    margin-bottom: 8px;
}

.side-menu.four-players .current-player-display {
    font-size: 0.9rem;
}

.side-menu.four-players .stone-counts-display {
    gap: 8px;
}

.side-menu.four-players .count-item {
    font-size: 0.8rem;
}

.side-menu.four-players .count-stone {
    width: 18px;
    height: 18px;
}