/* Ultra-Modern Multiplayer UI Styles */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Modern color palette with gradients */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #13b0a5 0%, #10b981 100%);
    --gradient-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
    
    /* Board colors */
    --board-bg: #deb887;
    --board-line: #8b6914;
    --stone-black: radial-gradient(circle at 30% 30%, #333333, #000000);
    --stone-white: radial-gradient(circle at 30% 30%, #ffffff, #f0f0f0);
}

/* Base styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-bg);
    color: var(--gray-900);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Animated background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: float 20s infinite linear;
    z-index: -1;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-60px, -60px); }
}

/* Main container with glassmorphism */
.container {
    max-width: 1400px;
    margin: 20px auto;
    padding: 40px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow: var(--shadow-2xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: fadeInUp 0.6s ease-out;
}

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

/* Header styles */
.header-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--gray-200);
}

.header-controls h1 {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
    letter-spacing: -1px;
}

/* Connection status pill */
.connection-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.connection-status::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.connection-status.online {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.connection-status.online::before {
    background: var(--success);
}

.connection-status.offline {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.connection-status.offline::before {
    background: var(--danger);
    animation: none;
}

@keyframes pulse {
    0%, 100% { 
        opacity: 1;
        transform: scale(1);
    }
    50% { 
        opacity: 0.5;
        transform: scale(1.5);
    }
}

/* Modern buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    gap: 8px;
}

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

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-secondary {
    background: var(--gray-600);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

/* Sound toggle button */
#sound-toggle {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--gray-700);
}

#sound-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
}

#sound-toggle.muted {
    opacity: 0.6;
}

/* Form inputs with floating labels */
.form-group {
    position: relative;
    margin-bottom: 24px;
}

.form-group label {
    position: absolute;
    top: -10px;
    left: 12px;
    background: white;
    padding: 0 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
    transition: all 0.2s ease;
}

input[type="text"], select {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    border: 2px solid var(--gray-300);
    border-radius: 12px;
    background: white;
    transition: all 0.2s ease;
    font-weight: 500;
}

input[type="text"]:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

input[type="text"]:hover, select:hover {
    border-color: var(--gray-400);
}

/* Player name input */
.player-info {
    text-align: center;
    margin-bottom: 40px;
}

.player-info label {
    position: static;
    display: block;
    margin-bottom: 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-700);
}

.player-info input {
    max-width: 300px;
    text-align: center;
    font-size: 18px;
}

/* Lobby cards */
.lobby-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.create-game-section, .join-game-section {
    background: white;
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.create-game-section:hover, .join-game-section:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.create-game-section h2, .join-game-section h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--gray-800);
}

/* Room code input */
#room-code {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 20px;
    letter-spacing: 4px;
    text-align: center;
    text-transform: uppercase;
    width: 200px;
}

/* Room list */
.public-rooms {
    margin-top: 32px;
}

.public-rooms h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--gray-700);
}

.rooms-list {
    max-height: 400px;
    overflow-y: auto;
    border-radius: 12px;
    background: var(--gray-50);
    padding: 8px;
}

/* Custom scrollbar */
.rooms-list::-webkit-scrollbar {
    width: 8px;
}

.rooms-list::-webkit-scrollbar-track {
    background: var(--gray-200);
    border-radius: 10px;
}

.rooms-list::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 10px;
}

.rooms-list::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Room items */
.room-item {
    background: white;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.room-item:hover {
    border-color: var(--primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.room-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.room-item-id {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 2px;
}

.room-item-board {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gray-100);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-600);
}

.room-item-players {
    font-size: 14px;
    color: var(--gray-600);
}

/* Game view */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    border-radius: 16px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-md);
}

.room-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

#room-id-display {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 3px;
}

/* Player cards */
.scores {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 24px;
    margin-bottom: 30px;
    align-items: stretch;
}

.score {
    background: white;
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 3px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.score::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gray-300);
}

.black-score::before {
    background: black;
}

.white-score::before {
    background: var(--gray-400);
}

.score.active {
    border-color: var(--success);
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.score.active::after {
    content: 'Your Turn';
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--success);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.player-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--gray-800);
}

.captures {
    font-size: 16px;
    color: var(--gray-600);
    font-weight: 500;
}

.player-status {
    font-size: 14px;
    margin-top: 12px;
    font-weight: 600;
}

.player-status.connected {
    color: var(--success);
}

.player-status.disconnected {
    color: var(--danger);
}

.player-status.waiting {
    color: var(--warning);
}

.current-player {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-700);
}

/* Board container */
.board-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px;
    background: linear-gradient(135deg, #f5deb3 0%, #deb887 100%);
    border-radius: 20px;
    box-shadow: var(--shadow-inner);
    margin-bottom: 30px;
    position: relative;
}

.board-container::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(45deg, #8b6914, #daa520);
    border-radius: 20px;
    z-index: -1;
}

/* Enhanced board */
.board {
    position: relative;
    background: var(--board-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-xl);
}

/* Controls section */
.controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

/* Status messages */
.game-status {
    text-align: center;
    margin-bottom: 30px;
}

.status-info, .status-success, .status-error, .status-warning {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    margin: 10px 0;
    animation: slideIn 0.3s ease;
}

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

.status-info {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

.status-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.status-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.status-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

/* Enhanced chat */
.chat-section {
    background: white;
    border-radius: 20px;
    padding: 24px;
    box-shadow: var(--shadow-lg);
    margin-top: 30px;
}

.chat-section h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--gray-800);
}

.chat-messages {
    height: 250px;
    overflow-y: auto;
    background: var(--gray-50);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
}

.chat-message {
    margin-bottom: 12px;
    padding: 12px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    animation: messageSlide 0.3s ease;
}

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

.chat-message-header {
    font-weight: 600;
    color: var(--primary);
    margin-right: 8px;
}

.chat-message-time {
    font-size: 12px;
    color: var(--gray-500);
    float: right;
}

.chat-input {
    display: flex;
    gap: 12px;
}

.chat-input input {
    flex: 1;
    border-radius: 12px;
}

/* Loading state */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--gray-600);
    font-weight: 500;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 24px;
    margin-left: 12px;
    border: 3px solid var(--gray-300);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Spectator banner */
.spectator-banner {
    background: var(--gradient-secondary);
    color: white;
    padding: 16px;
    text-align: center;
    border-radius: 12px;
    font-weight: 600;
    margin-bottom: 24px;
    animation: slideDown 0.5s ease;
}

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

/* Responsive design */
@media (max-width: 768px) {
    .container {
        margin: 10px;
        padding: 20px;
    }
    
    .header-controls {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .header-controls h1 {
        font-size: 2rem;
    }
    
    .lobby-options {
        grid-template-columns: 1fr;
    }
    
    .scores {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .game-header {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    #room-id-display {
        font-size: 24px;
    }
}

/* Hover effects for intersections */
.intersection {
    position: relative;
    cursor: pointer;
    transition: all 0.2s ease;
}

.intersection:hover::before {
    content: '';
    position: absolute;
    width: 80%;
    height: 80%;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(99, 102, 241, 0.2);
    pointer-events: none;
    animation: pulseHover 0.6s ease;
}

@keyframes pulseHover {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.5);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

/* Enhanced stones */
.stone {
    position: absolute;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.3s ease;
    animation: placeStone 0.3s ease;
}

@keyframes placeStone {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.stone.black {
    background: var(--stone-black);
    box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.4);
}

.stone.white {
    background: var(--stone-white);
    box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.stone.last-move::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40%;
    height: 40%;
    background: var(--danger);
    border-radius: 50%;
    animation: lastMovePulse 2s infinite;
}

@keyframes lastMovePulse {
    0%, 100% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.4;
        transform: translate(-50%, -50%) scale(1.3);
    }
}

/* Accessibility */
.btn:focus, input:focus, select:focus {
    outline: 3px solid var(--primary);
    outline-offset: 3px;
}

/* 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;
    }
}