:root {
  color-scheme: light dark;
  --bg: #fff8ef;
  --ink: #211d1a;
  --muted: #746961;
  --line: rgba(68, 48, 36, .16);
  --panel: rgba(255, 252, 246, .70);
  --panel-strong: rgba(255, 252, 246, .88);
  --accent: #f05b43;
  --accent-ink: #fffaf6;
  --calm: #19bda8;
  --gold: #f2b950;
  --violet: #8d6cff;
  --warn: #bc8507;
  --shadow: 0 16px 40px rgba(80, 49, 30, .13);
  --glow: 0 18px 60px rgba(240, 91, 67, .18), 0 10px 38px rgba(25, 189, 168, .13);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141517;
    --ink: #f5f0e8;
    --muted: #b9b0a7;
    --line: rgba(245, 240, 232, .15);
    --panel: rgba(25, 26, 29, .62);
    --panel-strong: rgba(29, 30, 34, .84);
    --accent: #ff6d52;
    --accent-ink: #1e1714;
    --calm: #4fd8c4;
    --gold: #ffd36f;
    --violet: #a995ff;
    --warn: #e2b144;
    --shadow: 0 18px 55px rgba(0, 0, 0, .42);
    --glow: 0 20px 70px rgba(255, 109, 82, .22), 0 10px 44px rgba(79, 216, 196, .15);
  }
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(116deg, rgba(255, 113, 78, .20), transparent 28%, rgba(25, 189, 168, .16) 58%, rgba(141, 108, 255, .13)),
    linear-gradient(180deg, #fffaf3 0%, var(--bg) 48%, #f3fbf6 100%);
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: -22%;
  pointer-events: none;
  background:
    linear-gradient(112deg, transparent 0 19%, rgba(255, 255, 255, .36) 25%, transparent 33% 58%, rgba(255, 210, 111, .24) 65%, transparent 76%),
    linear-gradient(34deg, transparent 0 30%, rgba(25, 189, 168, .16) 42%, transparent 56% 100%);
  filter: blur(24px);
  opacity: .72;
  transform: translate3d(-2%, 0, 0);
  animation: ambientShift 18s ease-in-out infinite alternate;
}

@media (prefers-color-scheme: dark) {
  body {
    background:
      linear-gradient(116deg, rgba(255, 109, 82, .17), transparent 28%, rgba(79, 216, 196, .11) 56%, rgba(169, 149, 255, .15)),
      linear-gradient(180deg, #18191c 0%, var(--bg) 58%, #111314 100%);
  }

  body::before {
    background:
      linear-gradient(112deg, transparent 0 18%, rgba(255, 211, 111, .13) 25%, transparent 35% 57%, rgba(79, 216, 196, .13) 66%, transparent 78%),
      linear-gradient(34deg, transparent 0 30%, rgba(169, 149, 255, .15) 43%, transparent 58% 100%);
    opacity: .9;
  }
}

button, textarea, input { font: inherit; }

button { cursor: pointer; }

.app-shell {
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr;
  padding: max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  position: relative;
  z-index: 1;
}

.topbar {
  width: min(980px, 100%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 36px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.brand-mark {
  width: 10px;
  height: 18px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), var(--gold) 45%, var(--calm));
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 48%, transparent), 0 0 16px color-mix(in srgb, var(--calm) 30%, transparent);
  animation: brandPulse 4s ease-in-out infinite;
}

.brand-name {
  font-size: 19px;
  font-weight: 760;
}

.top-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
}

.ghost-button, .icon-button {
  min-height: 32px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: color-mix(in srgb, var(--panel) 62%, transparent);
  border-radius: 8px;
  padding: 0 10px;
  backdrop-filter: blur(16px);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease, background .18s ease;
}

.ghost-button:hover, .icon-button:hover {
  border-color: color-mix(in srgb, var(--accent) 52%, var(--line));
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 16%, transparent);
  transform: translateY(-1px);
}

.player-shell .icon-button,
.drawer-head .icon-button {
  width: 32px;
  min-height: 32px;
  padding: 0;
}

.balance-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  padding: 0 11px;
  border: 1px solid color-mix(in srgb, var(--calm) 30%, var(--line));
  border-radius: 8px;
  color: var(--ink);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--calm) 13%, var(--panel)), color-mix(in srgb, var(--gold) 11%, var(--panel))),
    color-mix(in srgb, var(--panel) 78%, transparent);
  white-space: nowrap;
  max-width: 210px;
  overflow: hidden;
  text-overflow: ellipsis;
  box-shadow: 0 9px 26px color-mix(in srgb, var(--calm) 13%, transparent);
  backdrop-filter: blur(16px);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.balance-chip:hover, .balance-chip:focus-visible {
  border-color: color-mix(in srgb, var(--calm) 58%, var(--line));
  color: var(--ink);
  box-shadow: 0 10px 34px color-mix(in srgb, var(--calm) 22%, transparent);
  transform: translateY(-1px);
}

#balanceMain {
  font-weight: 800;
}

#balanceSub {
  color: var(--muted);
  font-size: 12px;
}

.workspace {
  align-self: stretch;
  width: min(1120px, 100%);
  min-height: calc(100svh - 46px);
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: stretch;
  padding-top: 10px;
}

.composer {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  grid-template-areas:
    "mode label"
    "topic topic"
    "controls controls";
  align-items: center;
  gap: 9px 12px;
  padding: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line));
  border-radius: 8px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--panel-strong) 92%, var(--accent) 8%), color-mix(in srgb, var(--panel-strong) 90%, var(--calm) 7%)),
    var(--panel-strong);
  box-shadow: var(--glow);
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.composer::before,
.player-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 0 24%, rgba(255, 255, 255, .34) 38%, transparent 53% 100%);
  opacity: .44;
  transform: translateX(-120%);
  animation: panelSheen 9s ease-in-out infinite;
}

.composer > *,
.player-shell > * {
  position: relative;
  z-index: 1;
}

.mode-switch {
  grid-area: mode;
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 3px;
  background: color-mix(in srgb, var(--panel) 78%, transparent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .38);
}

.mode-button {
  min-height: 30px;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  font-size: 14px;
  transition: background .18s ease, color .18s ease, box-shadow .18s ease;
}

.mode-button.active {
  color: var(--accent-ink);
  background: linear-gradient(105deg, var(--accent), color-mix(in srgb, var(--gold) 28%, var(--accent)));
  box-shadow: 0 9px 26px color-mix(in srgb, var(--accent) 28%, transparent);
}

.prompt-label {
  grid-area: label;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.2;
  font-weight: 680;
  letter-spacing: 0;
  max-width: none;
  align-self: center;
}

.prompt-input {
  grid-area: topic;
  width: 100%;
  resize: vertical;
  min-height: 64px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 11px;
  color: var(--ink);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--bg) 54%, var(--panel-strong)), color-mix(in srgb, var(--panel-strong) 88%, var(--calm) 5%));
  box-shadow: none;
  outline: none;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}

.prompt-input:focus {
  border-color: color-mix(in srgb, var(--accent) 60%, var(--line));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent), 0 14px 34px color-mix(in srgb, var(--accent) 10%, transparent);
}

.control-grid {
  grid-area: controls;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  align-self: center;
}

.slider-wrap {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 138px;
  grid-template-areas:
    "label range meta";
  gap: 8px 12px;
  min-width: 0;
  align-items: center;
}

.control-label {
  grid-area: label;
  color: var(--muted);
  font-size: 13px;
  align-self: center;
}

input[type="range"] {
  grid-area: range;
  width: 100%;
  accent-color: var(--accent);
  filter: drop-shadow(0 0 8px color-mix(in srgb, var(--accent) 26%, transparent));
}

.slider-meta {
  grid-area: meta;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  min-width: 0;
}

.slider-meta b {
  color: var(--ink);
}

.primary-button {
  width: 100%;
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  padding: 0 18px;
  color: var(--accent-ink);
  background: linear-gradient(110deg, var(--accent), #ff865d, var(--gold), var(--calm), var(--accent));
  background-size: 260% 100%;
  font-weight: 760;
  box-shadow: 0 12px 30px color-mix(in srgb, var(--accent) 28%, transparent), 0 0 30px color-mix(in srgb, var(--gold) 16%, transparent);
  animation: buttonShimmer 7s ease-in-out infinite;
  transition: transform .18s ease, box-shadow .18s ease;
}

.primary-button:hover,
.primary-button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 15px 38px color-mix(in srgb, var(--accent) 34%, transparent), 0 0 36px color-mix(in srgb, var(--gold) 22%, transparent);
}

.primary-button:disabled {
  cursor: wait;
  opacity: .65;
}

.status-line {
  grid-area: status;
  margin: 0;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid color-mix(in srgb, var(--gold) 20%, var(--line));
  border-radius: 8px;
  color: color-mix(in srgb, var(--ink) 78%, var(--muted));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--panel-strong) 90%, var(--gold) 7%), color-mix(in srgb, var(--panel-strong) 92%, var(--calm) 5%));
  box-shadow: 0 12px 30px color-mix(in srgb, var(--gold) 9%, transparent);
  backdrop-filter: blur(18px);
  font-size: 13px;
  align-self: stretch;
  display: flex;
  align-items: center;
}

.result-stage {
  display: grid;
  grid-template-columns: minmax(300px, 430px) minmax(0, 1fr);
  grid-template-areas:
    "player text"
    "status text";
  gap: 10px;
  align-items: start;
  align-self: start;
}

.player-shell {
  grid-area: player;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 32px;
  gap: 9px;
  align-items: center;
  padding: 10px;
  border: 1px solid color-mix(in srgb, var(--calm) 24%, var(--line));
  border-radius: 8px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--panel-strong) 90%, var(--calm) 8%), color-mix(in srgb, var(--panel-strong) 92%, var(--violet) 5%)),
    var(--panel-strong);
  box-shadow: 0 14px 38px color-mix(in srgb, var(--calm) 14%, transparent);
  backdrop-filter: blur(18px);
  position: relative;
  overflow: hidden;
}

.play-button {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ink), color-mix(in srgb, var(--calm) 24%, var(--ink)));
  position: relative;
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--calm) 10%, transparent), 0 10px 24px color-mix(in srgb, var(--ink) 18%, transparent);
}

.play-button::after {
  content: "";
  position: absolute;
  left: 17px;
  top: 12px;
  border-left: 12px solid var(--bg);
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
}

.play-button.playing::after {
  left: 14px;
  top: 13px;
  width: 13px;
  height: 15px;
  border: 0;
  background: linear-gradient(90deg, var(--bg) 0 35%, transparent 35% 65%, var(--bg) 65%);
}

.play-button:disabled {
  opacity: .38;
}

.track-title {
  font-size: 16px;
  line-height: 1.18;
  font-weight: 800;
}

.wave {
  height: 20px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 3px;
  align-items: center;
  margin: 5px 0 3px;
}

.wave span {
  display: block;
  height: 10px;
  border-radius: 99px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--calm) 72%, white), var(--calm));
  box-shadow: 0 0 12px color-mix(in srgb, var(--calm) 32%, transparent);
  transform-origin: center;
  animation: idleWave 3.8s ease-in-out infinite alternate;
}

.wave span:nth-child(2n) { height: 18px; }
.wave span:nth-child(3n) { height: 20px; }
.wave span:nth-child(5n) { height: 14px; }
.wave span:nth-child(2n) { animation-delay: .14s; }
.wave span:nth-child(3n) { animation-delay: .28s; }
.wave span:nth-child(5n) { animation-delay: .42s; }

.player-shell.is-playing .wave span {
  animation: wave 1.15s ease-in-out infinite alternate;
}

.player-shell.is-playing .wave span:nth-child(2n) { animation-delay: .08s; }
.player-shell.is-playing .wave span:nth-child(3n) { animation-delay: .16s; }
.player-shell.is-playing .wave span:nth-child(5n) { animation-delay: .24s; }

@keyframes wave {
  from { transform: scaleY(.68); opacity: .68; }
  to { transform: scaleY(1.08); opacity: 1; }
}

@keyframes idleWave {
  from { transform: scaleY(.82); opacity: .72; }
  to { transform: scaleY(1.04); opacity: .98; }
}

@keyframes panelSheen {
  0%, 46% { transform: translateX(-120%); opacity: 0; }
  58% { opacity: .44; }
  78%, 100% { transform: translateX(120%); opacity: 0; }
}

@keyframes buttonShimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes ambientShift {
  from { transform: translate3d(-2%, 0, 0) rotate(-1deg); }
  to { transform: translate3d(2%, -1%, 0) rotate(1deg); }
}

@keyframes brandPulse {
  0%, 100% { filter: saturate(1); transform: scaleY(1); }
  50% { filter: saturate(1.2); transform: scaleY(1.08); }
}

.track-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.text-result {
  grid-area: text;
  min-height: 148px;
  max-height: calc(100svh - 212px);
  overflow: auto;
  padding: 10px 12px;
  border: 1px solid color-mix(in srgb, var(--violet) 20%, var(--line));
  border-radius: 8px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--panel-strong) 82%, var(--violet) 7%), color-mix(in srgb, var(--panel-strong) 86%, var(--calm) 5%));
  box-shadow: 0 14px 38px color-mix(in srgb, var(--violet) 10%, transparent);
  backdrop-filter: blur(18px);
  color: color-mix(in srgb, var(--ink) 88%, var(--muted));
  line-height: 1.5;
  white-space: pre-wrap;
  font-size: 14px;
}

.text-result:empty {
  display: none;
}

.result-stage:has(.text-result:empty) {
  grid-template-columns: minmax(300px, 430px);
  grid-template-areas:
    "player"
    "status";
}

.action-dock {
  align-self: end;
  position: sticky;
  bottom: max(10px, env(safe-area-inset-bottom));
  padding: 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--line));
  border-radius: 8px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--panel-strong) 88%, var(--accent) 7%), color-mix(in srgb, var(--panel-strong) 90%, var(--calm) 6%));
  box-shadow: 0 18px 52px rgba(80, 49, 30, .15), 0 0 46px color-mix(in srgb, var(--accent) 13%, transparent);
  backdrop-filter: blur(22px);
  z-index: 5;
}

.drawer {
  position: fixed;
  inset: 0;
  display: none;
  justify-content: flex-end;
  background: rgba(0, 0, 0, .22);
  z-index: 20;
}

.drawer.open { display: flex; }

.drawer-panel {
  width: min(380px, 100%);
  height: 100%;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--panel-strong) 88%, var(--accent) 6%), color-mix(in srgb, var(--panel-strong) 90%, var(--calm) 7%));
  border-left: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-rows: auto 1fr;
  backdrop-filter: blur(20px);
}

.drawer-head {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
}

.drawer-body {
  overflow: auto;
  padding: 12px 14px 18px;
  display: grid;
  align-content: start;
  gap: 12px;
}

.history-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: color-mix(in srgb, var(--panel) 84%, transparent);
  backdrop-filter: blur(14px);
}

.drawer-body .primary-button,
.drawer-body .ghost-button {
  grid-area: auto;
  width: 100%;
}

button.history-item {
  width: 100%;
  color: var(--ink);
  text-align: left;
}

.history-item strong {
  display: block;
  margin-bottom: 6px;
}

.history-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.muted {
  color: var(--muted);
}

@media (max-width: 860px) {
  .app-shell { padding: 10px; }
  .topbar { align-items: center; }
  .top-actions { gap: 4px; justify-content: flex-end; }
  .balance-chip {
    max-width: 150px;
    padding: 0 9px;
  }
  .workspace {
    min-height: calc(100svh - 46px);
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 10px 0 0;
  }
  .composer {
    grid-template-columns: 1fr;
    grid-template-areas:
      "mode"
      "label"
      "topic"
      "controls";
  }
  .control-grid { grid-template-columns: 1fr; }
  .slider-wrap {
    grid-template-columns: 1fr;
    grid-template-areas:
      "label"
      "range"
      "meta";
  }
  .result-stage {
    grid-template-columns: 1fr;
    grid-template-areas:
      "player"
      "status"
      "text";
  }
  .result-stage:has(.text-result:empty) {
    grid-template-columns: 1fr;
    grid-template-areas:
      "player"
      "status";
  }
  .player-shell {
    grid-template-columns: 40px minmax(0, 1fr) 32px;
    padding: 10px;
  }
  .play-button { width: 40px; height: 40px; }
  .play-button::after { left: 17px; top: 12px; }
  .text-result { max-height: none; }
  .action-dock { padding: 9px; }
  .primary-button { min-height: 46px; }
}

@media (max-width: 460px) {
  .topbar { gap: 8px; }
  .brand-name { font-size: 17px; }
  .brand-mark {
    width: 8px;
    height: 17px;
  }
  .ghost-button {
    min-height: 30px;
    padding: 0 7px;
  }
  .balance-chip {
    display: inline-flex;
    min-height: 30px;
    max-width: 96px;
    padding: 0 8px;
  }
  #balanceSub { display: none; }
  .control-grid { grid-template-columns: 1fr; gap: 8px; }
  .mode-switch { width: 100%; }
  .prompt-input { min-height: 68px; }
  .wave { height: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}