:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --accent: #e94560;
    --accent-hover: #c73e54;
    --success: #00d9ff;
    --success-dark: #00b8d4;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --border-radius: 12px;
    --spacing: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: var(--spacing);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.header {
    text-align: center;
    padding: 32px 0;
}

.header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--success), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

.menu {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.app-card {
    display: flex;
    align-items: center;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.app-card:active {
    transform: scale(0.98);
}

.chat-card {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    border-color: var(--success);
}

.game-card {
    opacity: 0.8;
}

.app-icon {
    font-size: 20px;
    font-weight: bold;
    margin-right: 16px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

.app-info {
    flex: 1;
}

.app-info h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.app-info p {
    font-size: 13px;
    color: var(--text-secondary);
}

.app-arrow {
    font-size: 20px;
    color: var(--text-secondary);
}

.footer {
    text-align: center;
    padding: 20px 0;
    color: var(--text-secondary);
    font-size: 12px;
}

.btn {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
}

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

.btn-danger {
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.input {
    width: 100%;
    padding: 16px;
    border: 2px solid var(--bg-card);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 16px;
}

.input:focus {
    outline: none;
    border-color: var(--success);
}

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-height: 100vh;
}

.chat-header {
    background: var(--bg-secondary);
    padding: 16px;
    border-bottom: 1px solid var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-header h2 {
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    transition: background 0.3s ease;
    box-shadow: 0 0 8px currentColor;
}

.status-indicator.active {
    background: #00ff88;
    box-shadow: 0 0 12px #00ff88;
}

.status-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--bg-primary);
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 15px;
    line-height: 1.4;
    word-wrap: break-word;
}

.message-own {
    align-self: flex-end;
    background: var(--success);
    color: var(--bg-primary);
    border-bottom-right-radius: 4px;
}

.message-peer {
    align-self: flex-start;
    background: var(--bg-card);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

.message-time {
    font-size: 11px;
    opacity: 0.7;
    margin-top: 4px;
    display: block;
}

.chat-input-area {
    background: var(--bg-secondary);
    padding: 12px 16px;
    border-top: 1px solid var(--bg-card);
    display: flex;
    gap: 12px;
    align-items: center;
}

.chat-input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--bg-card);
    border-radius: 24px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 15px;
}

.btn-send {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: var(--success);
    color: var(--bg-primary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-mute {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--bg-card);
    background: transparent;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-mute.muted {
    background: var(--accent);
    border-color: var(--accent);
}

.screen {
    display: none;
    flex-direction: column;
    flex: 1;
    padding: 20px 0;
}

.screen.active {
    display: flex;
}

.screen-title {
    font-size: 24px;
    margin-bottom: 8px;
    text-align: center;
}

.screen-subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 32px;
    font-size: 14px;
}

.link-box {
    background: var(--bg-card);
    padding: 16px;
    border-radius: var(--border-radius);
    margin: 16px 0;
    word-break: break-all;
    font-family: monospace;
    font-size: 14px;
    border: 1px solid var(--success);
    color: var(--success);
}

.btn-copy {
    margin-top: 8px;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--success);
}

.waiting-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 32px 0;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--bg-card);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.hidden {
    display: none !important;
}

.error-message {
    background: rgba(233, 69, 96, 0.2);
    color: var(--accent);
    padding: 12px;
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    font-size: 14px;
    border-left: 4px solid var(--accent);
}

::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-card);
    border-radius: 3px;
}