/* 白噪音播放器样式 */

:root {
    --primary-color: #0ea5e9;
    --primary-hover: #38bdf8;
    --primary-light: rgba(14, 165, 233, 0.08);
    --primary-light-hover: rgba(14, 165, 233, 0.12);
    --border-color-hover: rgba(14, 165, 233, 0.2);
    --shadow-primary: 0 0 16px rgba(14, 165, 233, 0.15);
}

html, body { height: 100%; overflow-y: auto; overflow-x: hidden; margin: 0; }
body { display: flex; align-items: flex-start; justify-content: center; padding-top: 70px; padding-bottom: 70px; min-height: 100vh; }
.logo-icon { background: linear-gradient(135deg, var(--primary-color) 0%, #0369a1 100%); }
.main-content { width: 100%; max-width: 500px; padding: 20px; z-index: 10; }
.tool-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-xl); overflow: hidden; box-shadow: 0 20px 40px rgba(0,0,0,0.3); }

.noise-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; padding: 20px 16px; border-bottom: 1px solid var(--border-color); }
.noise-item {
    display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 16px 8px;
    background: rgba(255,255,255,0.03); border: 1px solid var(--border-color); border-radius: var(--radius-lg);
    cursor: pointer; transition: 0.2s;
}
.noise-item:hover { background: var(--primary-light); border-color: var(--border-color-hover); }
.noise-item.active { background: var(--primary-light); border-color: var(--primary-color); box-shadow: var(--shadow-primary); }
.noise-item.active .noise-icon { color: var(--primary-color); }
.noise-icon { font-size: 24px; color: var(--text-secondary); transition: 0.2s; }
.noise-name { font-size: 12px; color: var(--text-secondary); text-align: center; }

.player-controls { padding: 20px 16px; }
.current-noise { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; padding: 12px 16px; background: rgba(0,0,0,0.15); border-radius: var(--radius-md); }
.current-noise i { color: var(--primary-color); font-size: 16px; }
.current-noise span { font-size: 14px; color: var(--text-primary); }

.volume-control { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.volume-control i { color: var(--text-muted); font-size: 14px; }
.volume-range {
    flex: 1; height: 4px; -webkit-appearance: none; appearance: none;
    background: rgba(255,255,255,0.1); border-radius: 2px; outline: none;
}
.volume-range::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; width: 16px; height: 16px;
    border-radius: 50%; background: var(--primary-color); cursor: pointer;
}
.volume-label { font-size: 12px; color: var(--primary-color); min-width: 40px; text-align: right; font-family: var(--font-mono); }

.timer-control { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-muted); }
.timer-label { display: flex; align-items: center; gap: 6px; }
.timer-select {
    padding: 6px 10px; background: rgba(0,0,0,0.2); border: 1px solid var(--border-color);
    border-radius: var(--radius-sm); color: var(--text-primary); font-size: 13px; outline: none; cursor: pointer;
}
.timer-select:focus { border-color: var(--primary-color); }

@media (max-width: 480px) {
    .main-content { padding: 10px; }
    .noise-grid { grid-template-columns: repeat(2, 1fr); }
}