/* ==========================================================================
   WhiteNoise V1.2 · 移动端深色样式
   结构：基础 → 背景 → 卡片 → 标题 → 当前声音 → 播放按钮
        → 音量 → 环境声音 → 定时 → 小屏 / 动效偏好
   ========================================================================== */

:root {
  --bg: #05080f;
  --surface: rgba(20, 32, 54, 0.74);
  --line: rgba(154, 196, 255, 0.12);
  --line-strong: rgba(111, 230, 255, 0.44);
  --text: #eef5ff;
  --text-soft: #b9c9e6;
  --text-dim: #8397b9;
  --accent: #6fe6ff;
  --accent-2: #8aa4ff;
  --accent-ink: #04121e;
  --danger: #ffd5d5;
  --radius-xl: 30px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --font-cn: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  padding: clamp(14px, 4vw, 28px);
  padding-top: max(clamp(14px, 4vw, 28px), env(safe-area-inset-top));
  padding-bottom: max(clamp(14px, 4vw, 28px), env(safe-area-inset-bottom));
  font-family: var(--font-cn);
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
p {
  margin: 0;
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}

svg {
  display: block;
}

::selection {
  color: #fff;
  background: rgba(111, 230, 255, 0.32);
}

[v-cloak] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

/* ------------------------------- 背景光晕 -------------------------------- */

.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(120% 85% at 50% -15%, #152640 0%, #0a1120 48%, #05080f 100%);
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
}

.bg-orb-a {
  width: 70vmax;
  height: 70vmax;
  top: -32vmax;
  left: -22vmax;
  background: radial-gradient(circle, rgba(47, 101, 255, 0.32), transparent 62%);
  animation: drift-a 26s ease-in-out infinite alternate;
}

.bg-orb-b {
  width: 65vmax;
  height: 65vmax;
  right: -24vmax;
  bottom: -34vmax;
  background: radial-gradient(circle, rgba(0, 200, 210, 0.24), transparent 62%);
  animation: drift-b 30s ease-in-out infinite alternate;
}

.bg-canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

@keyframes drift-a {
  to {
    transform: translate3d(4vmax, 3vmax, 0) scale(1.08);
  }
}

@keyframes drift-b {
  to {
    transform: translate3d(-3vmax, -4vmax, 0) scale(1.06);
  }
}

/* ------------------------------- 主卡片 -------------------------------- */

.app {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  margin: auto;
  padding: 24px 22px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(
      115% 88% at 50% 42%,
      rgba(8, 14, 26, 0.89) 0%,
      rgba(10, 17, 30, 0.81) 44%,
      rgba(17, 29, 50, 0.6) 100%
    );
  box-shadow:
    0 32px 80px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.app::before {
  content: "";
  position: absolute;
  top: 0;
  left: 14%;
  right: 14%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(170, 235, 255, 0.55), transparent);
}

.app.visualizing {
  background: linear-gradient(
    180deg,
    rgba(8, 14, 26, 0.92) 0%,
    rgba(10, 17, 30, 0.9) 38%,
    rgba(10, 17, 30, 0.84) 70%,
    rgba(10, 17, 30, 0.7) 100%
  );
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.app.visualizing .panel-title,
.app.visualizing .sound-card,
.app.visualizing .timer-btn,
.app.visualizing .countdown {
  text-shadow: 0 1px 8px rgba(3, 7, 14, 0.65);
}

.app.visualizing .sound-card,
.app.visualizing .timer-btn,
.app.visualizing .upload-btn,
.app.visualizing .countdown {
  background-color: rgba(8, 14, 26, 0.58);
}

.app.visualizing .sound-card.active {
  background: linear-gradient(
      180deg,
      rgba(111, 230, 255, 0.16),
      rgba(138, 164, 255, 0.07)
    ),
    rgba(8, 14, 26, 0.58);
}

.app.visualizing .timer-btn.active {
  background: linear-gradient(
      180deg,
      rgba(111, 230, 255, 0.12),
      rgba(8, 14, 26, 0.58)
    );
}

/* ------------------------------- 标题区域 -------------------------------- */

.hero {
  padding: 6px 0 16px;
  text-align: center;
}

.hero-title {
  font-size: clamp(28px, 8.6vw, 34px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: #f4f9ff;
  text-shadow: 0 0 34px rgba(111, 230, 255, 0.18);
}

.hero-sub {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.26em;
  color: var(--text-soft);
}

/* ----------------------------- 当前声音显示 ------------------------------ */

.now {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 14px;
  text-align: center;
}

.now-orb {
  position: relative;
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border: 1px solid rgba(111, 230, 255, 0.22);
  border-radius: 50%;
  background: radial-gradient(circle at 32% 26%, rgba(111, 230, 255, 0.3), rgba(15, 26, 45, 0.9) 70%);
  box-shadow:
    0 20px 44px rgba(0, 0, 0, 0.45),
    inset 0 0 40px rgba(111, 230, 255, 0.1);
  transition: box-shadow 0.45s ease, border-color 0.45s ease, transform 0.45s ease;
}

.now-orb::after {
  content: "";
  position: absolute;
  inset: -9px;
  border: 1px solid rgba(111, 230, 255, 0.14);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.45s ease;
}

.now.playing .now-orb {
  border-color: rgba(111, 230, 255, 0.42);
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.5),
    0 0 42px rgba(111, 230, 255, 0.25),
    inset 0 0 46px rgba(111, 230, 255, 0.16);
  animation: breathe 5.5s ease-in-out infinite;
}

.now.playing .now-orb::after {
  opacity: 1;
  animation: halo 5.5s ease-in-out infinite;
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.035);
  }
}

@keyframes halo {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.06);
    opacity: 0.15;
  }
}

.now-icon {
  width: 42px;
  height: 42px;
  color: #d9f5ff;
  stroke-width: 1.5;
  filter: drop-shadow(0 0 14px rgba(111, 230, 255, 0.4));
}

.now-name {
  max-width: 100%;
  margin-top: 16px;
  overflow: hidden;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.now-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 7px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
  transition: color 0.3s ease;
}

.state-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
  box-shadow: 0 0 0 3px rgba(131, 151, 185, 0.12);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.now.playing .now-state {
  color: var(--accent);
}

.now.playing .state-dot {
  background: var(--accent);
  box-shadow:
    0 0 0 3px rgba(111, 230, 255, 0.14),
    0 0 10px rgba(111, 230, 255, 0.9);
}

/* -------------------------------- 错误提示 ------------------------------- */

.alert {
  margin-bottom: 12px;
  padding: 11px 14px;
  border: 1px solid rgba(255, 120, 120, 0.26);
  border-radius: 12px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--danger);
  background: rgba(255, 91, 91, 0.1);
}

.modal {
  width: min(340px, calc(100vw - 48px));
  max-height: calc(100vh - 40px);
  margin: auto;
  padding: 22px 20px 18px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--text);
  background: linear-gradient(180deg, #17253d, #0a1220);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.65);
  font-family: var(--font-cn);
}

.modal:not([open]) {
  display: none;
}

.modal::backdrop {
  background: rgba(3, 7, 14, 0.62);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.modal-text {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-soft);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  margin: 0;
}

.modal-btn {
  min-height: 40px;
  padding: 0 18px;
  border: 0;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent-ink);
  background: linear-gradient(135deg, #9af1ff 0%, #6fe6ff 45%, #a7b1ff 100%);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.modal-btn:active {
  transform: scale(0.97);
}

/* ------------------------------ 播放 / 暂停 ------------------------------ */

.play-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 56px;
  padding: 0 20px;
  border: 0;
  border-radius: var(--radius-pill);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent-ink);
  background: linear-gradient(135deg, #9af1ff 0%, #6fe6ff 42%, #a7b1ff 100%);
  box-shadow:
    0 16px 38px rgba(70, 203, 255, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.65);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: transform 0.16s ease, box-shadow 0.25s ease, filter 0.2s ease;
}

.play-btn:active {
  transform: scale(0.985);
  box-shadow:
    0 10px 24px rgba(70, 203, 255, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.play-icon {
  flex: none;
  width: 20px;
  height: 20px;
}

/* -------------------------------- 分区通用 ------------------------------- */

.panel {
  margin-top: 17px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 24px;
  margin-bottom: 12px;
}

.panel-title {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-soft);
}

.upload-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 34px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--text-soft);
  background: rgba(255, 255, 255, 0.04);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    transform 0.16s ease;
}

.upload-btn:active {
  transform: scale(0.97);
}

.upload-icon {
  flex: none;
  width: 13px;
  height: 13px;
  opacity: 0.9;
}

.file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* -------------------------------- 音量控制 ------------------------------- */

.volume-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.vol-icon {
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--text-dim);
}

.range {
  -webkit-appearance: none;
  appearance: none;
  flex: 1 1 auto;
  width: 100%;
  height: 30px;
  margin: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.range:focus {
  outline: none;
}

.range:focus-visible {
  border-radius: var(--radius-pill);
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

.range::-webkit-slider-runnable-track {
  height: 8px;
  border-radius: var(--radius-pill);
  background: linear-gradient(
    90deg,
    #6fe6ff 0%,
    #8aa4ff var(--volume, 50%),
    rgba(255, 255, 255, 0.11) var(--volume, 50%)
  );
}

.range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 26px;
  height: 26px;
  margin-top: -9px;
  border: 0;
  border-radius: 50%;
  background: #fff;
  box-shadow:
    0 0 0 5px rgba(111, 230, 255, 0.14),
    0 6px 16px rgba(0, 0, 0, 0.5);
  cursor: grab;
  transition: box-shadow 0.2s ease;
}

.range:active::-webkit-slider-thumb {
  cursor: grabbing;
  box-shadow:
    0 0 0 7px rgba(111, 230, 255, 0.2),
    0 6px 16px rgba(0, 0, 0, 0.5);
}

.range::-moz-range-track {
  height: 8px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.11);
}

.range::-moz-range-progress {
  height: 8px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, #6fe6ff, #8aa4ff);
}

.range::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border: 0;
  border-radius: 50%;
  background: #fff;
  box-shadow:
    0 0 0 5px rgba(111, 230, 255, 0.14),
    0 6px 16px rgba(0, 0, 0, 0.5);
}

/* ------------------------------ 环境声音选择 ----------------------------- */

.sound-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.sound-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 82px;
  padding: 12px 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--text-soft);
  background: rgba(255, 255, 255, 0.032);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition:
    background 0.22s ease,
    border-color 0.22s ease,
    color 0.22s ease,
    transform 0.16s ease,
    box-shadow 0.22s ease;
}

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

.sound-card:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

.sound-card:disabled:active {
  transform: none;
}

.sound-icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  color: var(--text-soft);
  transition: color 0.22s ease;
}

.sound-icon svg {
  width: 24px;
  height: 24px;
  stroke-width: 1.7;
}

.sound-label {
  font-size: 13px;
  letter-spacing: 0.06em;
}

.sound-card.active {
  color: #fff;
  border-color: var(--line-strong);
  background: linear-gradient(180deg, rgba(111, 230, 255, 0.16), rgba(138, 164, 255, 0.07));
  box-shadow:
    0 0 0 1px rgba(111, 230, 255, 0.1),
    0 10px 26px rgba(0, 0, 0, 0.25);
}

.sound-card.active .sound-icon {
  color: var(--accent);
}

/* -------------------------------- 定时关闭 ------------------------------- */

.countdown {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
  transition:
    color 0.25s ease,
    border-color 0.25s ease,
    background 0.25s ease,
    box-shadow 0.25s ease;
}

.countdown.running {
  color: var(--accent);
  border-color: rgba(111, 230, 255, 0.3);
  background: rgba(111, 230, 255, 0.08);
  box-shadow: 0 0 18px rgba(111, 230, 255, 0.12);
}

.clock-icon {
  flex: none;
  width: 13px;
  height: 13px;
  opacity: 0.85;
}

.countdown-value {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
}

.timer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.timer-btn {
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  gap: 3px;
  min-height: 48px;
  padding: 8px 4px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text-soft);
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.032);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition:
    background 0.22s ease,
    border-color 0.22s ease,
    color 0.22s ease,
    box-shadow 0.22s ease,
    transform 0.16s ease;
}

.timer-btn:active {
  transform: scale(0.98);
}

.timer-num {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.timer-unit {
  font-size: 10.5px;
  color: var(--text-dim);
}

.timer-btn.active {
  color: #fff;
  border-color: var(--line-strong);
  background: rgba(111, 230, 255, 0.12);
  box-shadow:
    inset 0 0 20px rgba(111, 230, 255, 0.06),
    0 0 0 1px rgba(111, 230, 255, 0.08);
}

.timer-btn.active .timer-unit {
  color: var(--accent);
}

/* -------------------------------- 交互增强 ------------------------------- */

button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

@media (hover: hover) and (pointer: fine) {
  .play-btn:hover {
    filter: brightness(1.06);
    box-shadow:
      0 18px 44px rgba(70, 203, 255, 0.36),
      inset 0 1px 0 rgba(255, 255, 255, 0.65);
  }

  .sound-card:hover {
    border-color: rgba(160, 200, 255, 0.28);
    background: rgba(255, 255, 255, 0.055);
  }

  .sound-card.active:hover {
    border-color: rgba(111, 230, 255, 0.6);
  }

  .upload-btn:hover {
    border-color: rgba(160, 200, 255, 0.28);
    background: rgba(255, 255, 255, 0.055);
  }

  .timer-btn:hover {
    border-color: rgba(160, 200, 255, 0.28);
    background: rgba(255, 255, 255, 0.055);
  }

  .timer-btn.active:hover {
    background: rgba(111, 230, 255, 0.16);
  }
}

/* -------------------------------- 补充提示 ------------------------------- */

.noscript {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 24px;
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
  color: var(--text);
  background: var(--bg);
}

/* ------------------------------- 小屏适配 -------------------------------- */

@media (max-width: 359px) {
  body {
    padding-right: 12px;
    padding-left: 12px;
  }

  .app {
    padding: 22px 16px 16px;
    border-radius: 26px;
  }

  .hero {
    padding-bottom: 14px;
  }

  .hero-title {
    font-size: 27px;
  }

  .now-orb {
    width: 84px;
    height: 84px;
  }

  .now-icon {
    width: 38px;
    height: 38px;
  }

  .now-name {
    margin-top: 13px;
    font-size: 20px;
  }

  .sound-grid,
  .timer-grid {
    gap: 8px;
  }

  .sound-card {
    min-height: 76px;
    padding: 10px 4px 8px;
  }

  .sound-icon,
  .sound-icon svg {
    width: 22px;
    height: 22px;
  }

  .sound-label {
    font-size: 12px;
  }

  .timer-btn {
    min-height: 46px;
  }

  .timer-num {
    font-size: 13px;
  }

  .timer-unit {
    font-size: 10px;
  }

  .panel {
    margin-top: 15px;
    padding-top: 15px;
  }

  .panel-head {
    margin-bottom: 10px;
  }
}

/* ----------------------------- 减少动态效果 ------------------------------ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}