/* Theme tokens — Vanilla HUD is default */
:root,
[data-theme="vanilla"] {
  --ink: #0d2a3d;
  --ink-soft: #2a5a78;
  --ink-on-sky: #0d2a3d;
  --panel: rgba(180, 210, 235, 0.82);
  --panel-border: rgba(255, 255, 255, 0.65);
  --panel-edge: #2f7db8;
  --line: rgba(26, 74, 110, 0.22);
  --field: #ffffff;
  --field-border: rgba(47, 125, 184, 0.35);
  --accent: #1a6eb0;
  --accent-mid: #2f8fd4;
  --accent-deep: #0f4f82;
  --ghost-bg: linear-gradient(180deg, #f4f7fa 0%, #c8d4e0 100%);
  --ghost-ink: #1a3a52;
  --ghost-border: rgba(255, 255, 255, 0.85);
  --plumbob: #00af3f;
  --highlight: #f5c842;
  --focus: #2f7db8;
  --error: #a83228;
  --radius: 14px;
  --radius-btn: 12px;
  --font-display: "Nunito", "Segoe UI", sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", sans-serif;
  --brand-fill: #ffffff;
  --brand-stroke: #1a5a8a;
  --brand-shadow: 0 2px 0 rgba(13, 42, 61, 0.25), 0 0 24px rgba(47, 125, 184, 0.35);
  --tagline-display: none;
  --hero-align: stretch;
  --hero-actions-justify: flex-end;
  --foot-ink: rgba(13, 42, 61, 0.7);
  --foot-link: #0f4f82;
  --workspace-shadow: 0 18px 40px rgba(15, 60, 100, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    inset 0 -1px 0 rgba(47, 125, 184, 0.25);
  --btn-primary-bg: linear-gradient(180deg, #4aa3e0 0%, #1a6eb0 48%, #0f4f82 100%);
  --btn-primary-ink: #fff;
  --btn-primary-border: #0a3d66;
  --btn-primary-shine: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.55) 0%,
    rgba(255, 255, 255, 0.12) 48%,
    transparent 52%
  );
  --btn-ghost-shine: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.7) 0%,
    rgba(255, 255, 255, 0.15) 48%,
    transparent 52%
  );
  --plumbob-filter: drop-shadow(0 2px 6px rgba(0, 120, 40, 0.35));
  --theme-select-bg: rgba(255, 255, 255, 0.75);
  --theme-select-ink: var(--ink);
  --theme-select-border: rgba(47, 125, 184, 0.45);
  color-scheme: light;
}

[data-theme="suburbia"] {
  --ink: #1a2f4a;
  --ink-soft: #3a5670;
  --ink-on-sky: #ffffff;
  --panel: rgba(255, 255, 255, 0.94);
  --panel-border: rgba(126, 200, 232, 0.9);
  --panel-edge: #7ec8e8;
  --line: rgba(26, 47, 74, 0.12);
  --field: #ffffff;
  --field-border: rgba(26, 47, 74, 0.16);
  --accent: #00b140;
  --accent-mid: #2ecc5a;
  --accent-deep: #007a2f;
  --ghost-bg: #ffffff;
  --ghost-ink: #1a2f4a;
  --ghost-border: rgba(0, 177, 64, 0.45);
  --plumbob: #00b140;
  --highlight: #ffe066;
  --focus: #00b140;
  --error: #c0392b;
  --radius: 20px;
  --radius-btn: 999px;
  --brand-fill: #ffffff;
  --brand-stroke: #00b140;
  --brand-shadow: 0 3px 0 rgba(0, 122, 47, 0.35), 0 0 28px rgba(0, 177, 64, 0.45);
  --tagline-display: block;
  --hero-align: center;
  --hero-actions-justify: center;
  --foot-ink: rgba(255, 255, 255, 0.92);
  --foot-link: #ffffff;
  --workspace-shadow: 0 20px 50px rgba(20, 60, 90, 0.22);
  --btn-primary-bg: linear-gradient(180deg, #3dd46a 0%, #00b140 55%, #007a2f 100%);
  --btn-primary-ink: #fff;
  --btn-primary-border: #006628;
  --btn-primary-shine: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.45) 0%,
    rgba(255, 255, 255, 0.1) 45%,
    transparent 50%
  );
  --btn-ghost-shine: none;
  --plumbob-filter: drop-shadow(0 0 14px rgba(0, 177, 64, 0.55));
  --theme-select-bg: rgba(255, 255, 255, 0.88);
  --theme-select-ink: #1a2f4a;
  --theme-select-border: rgba(255, 255, 255, 0.7);
  color-scheme: light;
}

[data-theme="latenight"] {
  --ink: #eef2f8;
  --ink-soft: #a8b4c8;
  --ink-on-sky: #eef2f8;
  --panel: rgba(18, 16, 28, 0.82);
  --panel-border: rgba(79, 209, 197, 0.22);
  --panel-edge: #2a2040;
  --line: rgba(238, 242, 248, 0.12);
  --field: rgba(10, 8, 18, 0.85);
  --field-border: rgba(238, 242, 248, 0.14);
  --accent: #4fd1c5;
  --accent-mid: #7ae0d6;
  --accent-deep: #2a9b90;
  --ghost-bg: transparent;
  --ghost-ink: #eef2f8;
  --ghost-border: #e84a9a;
  --plumbob: #2ee66b;
  --highlight: #e84a9a;
  --focus: #4fd1c5;
  --error: #ff6b8a;
  --radius: 12px;
  --radius-btn: 10px;
  --brand-fill: #ffffff;
  --brand-stroke: transparent;
  --brand-shadow: 0 0 0 transparent;
  --tagline-display: none;
  --hero-align: stretch;
  --hero-actions-justify: flex-end;
  --foot-ink: rgba(168, 180, 200, 0.85);
  --foot-link: #7ae0d6;
  --workspace-shadow: 0 0 0 1px rgba(232, 74, 154, 0.15),
    0 24px 60px rgba(0, 0, 0, 0.55);
  --btn-primary-bg: transparent;
  --btn-primary-ink: #eef2f8;
  --btn-primary-border: #4fd1c5;
  --btn-primary-shine: none;
  --btn-ghost-shine: none;
  --plumbob-filter: drop-shadow(0 0 16px rgba(46, 230, 107, 0.75));
  --theme-select-bg: rgba(18, 16, 28, 0.9);
  --theme-select-ink: #eef2f8;
  --theme-select-border: rgba(79, 209, 197, 0.45);
  color-scheme: dark;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: #7ba8c9;
  line-height: 1.5;
}

html[data-theme="suburbia"] body {
  background: #5eb0d8;
}

html[data-theme="latenight"] body {
  background: #0a0812;
}

/* —— Atmosphere layers —— */
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.atmosphere-sky,
.atmosphere-mid,
.atmosphere-fg {
  position: absolute;
  inset: 0;
}

/* Vanilla: soft blue sky wash */
html[data-theme="vanilla"] .atmosphere-sky {
  background:
    radial-gradient(ellipse 80% 55% at 50% 0%, #c5e4f7 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 85% 20%, rgba(255, 255, 255, 0.55), transparent 50%),
    radial-gradient(ellipse 50% 35% at 15% 30%, rgba(255, 255, 255, 0.4), transparent 45%),
    linear-gradient(180deg, #9ecceb 0%, #7eb6d9 45%, #6aa3c8 100%);
  animation: skyDrift 22s ease-in-out infinite alternate;
}

html[data-theme="vanilla"] .atmosphere-mid {
  opacity: 0.18;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cpath d='M0 60h120M60 0v120' stroke='%23ffffff' stroke-width='1' opacity='0.35'/%3E%3C/svg%3E");
  background-size: 120px 120px;
}

html[data-theme="vanilla"] .atmosphere-fg {
  background: radial-gradient(ellipse 70% 40% at 50% 100%, rgba(47, 125, 184, 0.2), transparent 55%);
}

/* Suburbia: sunny hills + clouds */
html[data-theme="suburbia"] .atmosphere-sky {
  background:
    radial-gradient(circle 18vw at 12% 12%, rgba(255, 250, 200, 0.95), transparent 55%),
    radial-gradient(ellipse 40% 22% at 70% 18%, rgba(255, 255, 255, 0.85), transparent 60%),
    radial-gradient(ellipse 30% 18% at 35% 22%, rgba(255, 255, 255, 0.7), transparent 55%),
    linear-gradient(180deg, #7ec8e8 0%, #a8daf0 38%, #b8e0f0 55%, #8fd4a0 55.2%, #7bc67e 78%, #3d9b4a 100%);
  animation: skyDrift 28s ease-in-out infinite alternate;
}

html[data-theme="suburbia"] .atmosphere-mid {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320' preserveAspectRatio='none'%3E%3Cpath fill='%233d9b4a' d='M0 224c80-40 160-20 240-32s160-48 240-40 160 48 240 56 160-16 240-32 160-40 240-24 160 56 240 48v120H0z'/%3E%3Cpath fill='%237bc67e' d='M0 256c96-32 192-16 288-28s192-40 288-32 192 40 288 44 192-20 288-36 192-36 288-20v136H0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: bottom center;
  background-size: 100% 42%;
  opacity: 0.95;
}

html[data-theme="suburbia"] .atmosphere-fg {
  background:
    radial-gradient(ellipse 50% 20% at 20% 70%, rgba(61, 155, 74, 0.35), transparent 70%),
    radial-gradient(ellipse 40% 18% at 80% 75%, rgba(123, 198, 126, 0.3), transparent 65%);
}

/* Late Night: city skyline */
html[data-theme="latenight"] .atmosphere-sky {
  background:
    radial-gradient(ellipse 50% 40% at 70% 20%, rgba(90, 40, 140, 0.55), transparent 60%),
    radial-gradient(ellipse 40% 35% at 20% 30%, rgba(40, 60, 140, 0.4), transparent 55%),
    linear-gradient(180deg, #1a1030 0%, #12101a 40%, #0a0812 70%, #08060e 100%);
}

html[data-theme="latenight"] .atmosphere-mid {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 400' preserveAspectRatio='xMidYMax meet'%3E%3Cg fill='%23080510'%3E%3Crect x='40' y='160' width='70' height='240'/%3E%3Crect x='120' y='100' width='90' height='300'/%3E%3Crect x='220' y='140' width='55' height='260'/%3E%3Crect x='290' y='80' width='110' height='320'/%3E%3Crect x='420' y='130' width='75' height='270'/%3E%3Crect x='510' y='60' width='95' height='340'/%3E%3Crect x='620' y='110' width='80' height='290'/%3E%3Crect x='720' y='90' width='120' height='310'/%3E%3Crect x='860' y='150' width='60' height='250'/%3E%3Crect x='940' y='70' width='100' height='330'/%3E%3Crect x='1060' y='120' width='85' height='280'/%3E%3C/g%3E%3Cg fill='%234fd1c5' opacity='0.55'%3E%3Crect x='135' y='130' width='8' height='10'/%3E%3Crect x='155' y='130' width='8' height='10'/%3E%3Crect x='175' y='150' width='8' height='10'/%3E%3Crect x='320' y='110' width='8' height='10'/%3E%3Crect x='345' y='130' width='8' height='10'/%3E%3Crect x='540' y='90' width='8' height='10'/%3E%3Crect x='560' y='110' width='8' height='10'/%3E%3Crect x='750' y='120' width='8' height='10'/%3E%3Crect x='780' y='140' width='8' height='10'/%3E%3Crect x='970' y='100' width='8' height='10'/%3E%3Crect x='990' y='120' width='8' height='10'/%3E%3C/g%3E%3Cg fill='%23e84a9a' opacity='0.4'%3E%3Crect x='145' y='170' width='8' height='10'/%3E%3Crect x='360' y='160' width='8' height='10'/%3E%3Crect x='580' y='150' width='8' height='10'/%3E%3Crect x='800' y='180' width='8' height='10'/%3E%3Crect x='1010' y='160' width='8' height='10'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: bottom center;
  background-size: 110% 55%;
  opacity: 0.95;
}

html[data-theme="latenight"] .atmosphere-fg {
  background:
    linear-gradient(180deg, transparent 40%, rgba(10, 8, 18, 0.85) 85%),
    radial-gradient(ellipse 60% 25% at 50% 100%, rgba(232, 74, 154, 0.12), transparent 70%);
  box-shadow: inset 0 0 120px rgba(0, 0, 0, 0.45);
}

@keyframes skyDrift {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.04);
  }
}

/* —— Page chrome —— */
.page {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(1.5rem, 5vw, 3.5rem) clamp(1.1rem, 4vw, 2rem) 3rem;
}

.hero {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.hero-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem 1.5rem;
}

html[data-theme="suburbia"] .hero-top {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

html[data-theme="suburbia"] .brand-lockup {
  justify-content: center;
}

.plumbob {
  flex-shrink: 0;
  width: clamp(2.5rem, 7vw, 3.25rem);
  height: clamp(2.5rem, 7vw, 3.25rem);
  filter: var(--plumbob-filter);
  animation: plumbobBob 3.2s ease-in-out infinite;
  transform-origin: 50% 20%;
}

.brand-text {
  min-width: 0;
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 8vw, 4.25rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--brand-fill);
  -webkit-text-stroke: 2.5px var(--brand-stroke);
  paint-order: stroke fill;
  text-shadow: var(--brand-shadow);
}

html[data-theme="latenight"] .brand {
  -webkit-text-stroke: 0;
  text-shadow: none;
  position: relative;
}

html[data-theme="latenight"] .brand::after {
  content: "";
  display: block;
  margin-top: 0.35rem;
  height: 3px;
  width: 100%;
  max-width: 8.5rem;
  border-radius: 2px;
  background: var(--highlight);
  box-shadow: 0 0 12px rgba(232, 74, 154, 0.85), 0 0 24px rgba(232, 74, 154, 0.45);
}

.tagline {
  display: var(--tagline-display);
  margin: 0.45rem 0 0;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink-on-sky);
  text-shadow: 0 1px 8px rgba(20, 60, 90, 0.35);
}

.hero-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  justify-content: var(--hero-actions-justify);
}

html[data-theme="suburbia"] .hero-controls {
  flex-direction: column;
  width: 100%;
}

.theme-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-on-sky);
}

.theme-picker-label {
  opacity: 0.9;
}

.theme-picker select {
  appearance: none;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 2rem 0.4rem 0.7rem;
  border-radius: 8px;
  border: 1px solid var(--theme-select-border);
  background-color: var(--theme-select-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%232a5a78' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.55rem center;
  color: var(--theme-select-ink);
  cursor: pointer;
}

html[data-theme="latenight"] .theme-picker select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23a8b4c8' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
}

html[data-theme="suburbia"] .theme-picker {
  color: #fff;
  text-shadow: 0 1px 6px rgba(20, 60, 90, 0.4);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: var(--hero-actions-justify);
}

/* —— Buttons —— */
.btn {
  position: relative;
  appearance: none;
  border: 2px solid transparent;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.65rem 1.35rem;
  cursor: pointer;
  overflow: hidden;
  transition: transform 120ms ease, box-shadow 160ms ease, border-color 160ms ease,
    background 160ms ease, color 160ms ease, filter 160ms ease;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--btn-primary-shine);
  pointer-events: none;
  border-radius: inherit;
}

.btn:active {
  transform: translateY(1px) scale(0.98);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.25);
}

.btn:disabled {
  opacity: 0.55;
  cursor: wait;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-ink);
  border-color: var(--btn-primary-border);
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.18), 0 6px 16px rgba(15, 60, 100, 0.2);
}

html[data-theme="latenight"] .btn-primary {
  box-shadow: 0 0 10px rgba(79, 209, 197, 0.45), 0 0 22px rgba(79, 209, 197, 0.2);
}

html[data-theme="latenight"] .btn-primary:hover {
  background: rgba(79, 209, 197, 0.12);
  filter: brightness(1.08);
}

.btn-primary:hover {
  filter: brightness(1.06);
}

.btn-ghost {
  background: var(--ghost-bg);
  color: var(--ghost-ink);
  border-color: var(--ghost-border);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.1);
}

.btn-ghost::before {
  background: var(--btn-ghost-shine);
}

html[data-theme="suburbia"] .btn-ghost {
  box-shadow: 0 4px 14px rgba(20, 60, 90, 0.12);
}

html[data-theme="latenight"] .btn-ghost {
  box-shadow: 0 0 10px rgba(232, 74, 154, 0.4);
}

html[data-theme="latenight"] .btn-ghost:hover {
  background: rgba(232, 74, 154, 0.12);
}

.btn-sm {
  padding: 0.32rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
}

html[data-theme="suburbia"] .panel-actions .btn-ghost {
  border-color: rgba(0, 177, 64, 0.55);
  color: #007a2f;
}

html[data-theme="latenight"] .panel-actions .btn-ghost:first-child,
html[data-theme="latenight"] #speak-btn,
html[data-theme="latenight"] #random-btn {
  border-color: #4fd1c5;
  box-shadow: 0 0 8px rgba(79, 209, 197, 0.35);
}

html[data-theme="latenight"] .panel-actions #copy-btn,
html[data-theme="latenight"] .panel-actions #stop-speak-btn {
  border-color: #e84a9a;
  box-shadow: 0 0 8px rgba(232, 74, 154, 0.35);
}

/* —— Workspace —— */
.workspace {
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 2px solid var(--panel-border);
  border-radius: calc(var(--radius) + 4px);
  padding: clamp(1rem, 3vw, 1.5rem);
  box-shadow: var(--workspace-shadow);
  outline: 1px solid var(--panel-edge);
  outline-offset: -3px;
}

html[data-theme="suburbia"] .workspace {
  outline: none;
  border-width: 2px;
}

html[data-theme="latenight"] .workspace {
  outline: none;
  border-width: 1px;
}

.panel-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

html[data-theme="vanilla"] .panel-label {
  color: #0d2a3d;
  font-family: var(--font-display);
}

.panels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 720px) {
  .panels {
    grid-template-columns: 1fr 1fr;
    gap: 1.15rem;
  }

  html[data-theme="vanilla"] .panels {
    column-gap: 1.25rem;
    position: relative;
  }

  html[data-theme="vanilla"] .panels::after {
    content: "";
    position: absolute;
    top: 0.25rem;
    bottom: 0.25rem;
    left: 50%;
    width: 1px;
    background: linear-gradient(
      180deg,
      transparent,
      rgba(255, 255, 255, 0.65) 20%,
      rgba(255, 255, 255, 0.65) 80%,
      transparent
    );
    pointer-events: none;
  }
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.panel-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

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

.random-count-label {
  display: inline-flex;
  align-items: center;
}

.random-count-select {
  appearance: none;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  min-width: 2.4rem;
  padding: 0.32rem 1.35rem 0.32rem 0.55rem;
  border-radius: 8px;
  border: 1px solid var(--theme-select-border);
  background-color: var(--theme-select-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%232a5a78' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.4rem center;
  color: var(--theme-select-ink);
  cursor: pointer;
  line-height: 1.2;
}

html[data-theme="latenight"] .random-count-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23a8b4c8' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
}

html[data-theme="latenight"] .panel-actions .random-count-select {
  border-color: #4fd1c5;
  box-shadow: 0 0 8px rgba(79, 209, 197, 0.35);
}

.random-count-select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

textarea,
.output {
  width: 100%;
  min-height: 11rem;
  padding: 0.9rem 1rem;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid var(--field-border);
  background: var(--field);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.55;
  resize: vertical;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.06);
}

html[data-theme="latenight"] textarea,
html[data-theme="latenight"] .output {
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.45);
}

textarea:focus,
.output:focus {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.output {
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
  overflow: auto;
  min-height: 11rem;
}

.output:not(.has-content)::before {
  content: "Translation appears here.";
  color: var(--ink-soft);
  opacity: 0.7;
}

.output.flash {
  animation: toastIn 380ms ease;
}

.output.is-error {
  color: var(--error);
  border-color: color-mix(in srgb, var(--error) 45%, transparent);
}

@keyframes toastIn {
  from {
    opacity: 0.35;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes plumbobBob {
  0%,
  100% {
    transform: translateY(0) rotate(-4deg);
  }
  50% {
    transform: translateY(-5px) rotate(4deg);
  }
}

.hint {
  margin: 0.85rem 0 0;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-soft);
  min-height: 1.25em;
}

html[data-theme="vanilla"] .hint {
  color: #0d2a3d;
}

html[data-theme="vanilla"] .hint:not(:empty)::before {
  content: "";
  display: inline-block;
  width: 0.65em;
  height: 0.65em;
  margin-right: 0.4em;
  vertical-align: 0.05em;
  background: var(--highlight);
  clip-path: polygon(50% 0%, 100% 40%, 50% 100%, 0% 40%);
  box-shadow: 0 0 6px rgba(245, 200, 66, 0.7);
}

html[data-theme="suburbia"] .hint {
  color: var(--ink-soft);
}

html[data-theme="latenight"] .hint {
  color: var(--ink-soft);
}

/* —— Music thumb switch (hero controls) —— */
.music-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink-on-sky);
  flex-shrink: 0;
}

html[data-theme="vanilla"] .music-toggle {
  color: #0d2a3d;
  font-family: var(--font-display);
}

html[data-theme="suburbia"] .music-toggle {
  color: #fff;
  text-shadow: 0 1px 6px rgba(20, 60, 90, 0.4);
}

html[data-theme="latenight"] .music-toggle {
  color: var(--ink-on-sky);
}

.music-toggle input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.music-switch {
  position: relative;
  display: inline-block;
  width: 2.75rem;
  height: 1.45rem;
  border-radius: 999px;
  border: 2px solid #3d6a8c;
  background: linear-gradient(180deg, #9eb9d0 0%, #6a8eab 100%);
  transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
  box-sizing: border-box;
  box-shadow: inset 0 2px 4px rgba(15, 50, 80, 0.35), 0 1px 0 rgba(255, 255, 255, 0.45);
}

.music-thumb {
  position: absolute;
  top: 50%;
  left: 2px;
  width: 1.05rem;
  height: 1.05rem;
  border-radius: 50%;
  transform: translateY(-50%);
  transition: left 160ms ease, background 160ms ease, box-shadow 160ms ease;
  background: linear-gradient(180deg, #f7fbff 0%, #c5d5e4 100%);
  border: 1px solid #7a9ab4;
  box-shadow: 0 1px 3px rgba(15, 50, 80, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

.music-toggle:has(input:checked) .music-switch {
  background: linear-gradient(180deg, #4aa3e0 0%, #1a6eb0 55%, #0f4f82 100%);
  border-color: #0a3d66;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 0 8px rgba(47, 125, 184, 0.45);
}

.music-toggle:has(input:checked) .music-thumb {
  left: calc(100% - 1.05rem - 2px);
  background: linear-gradient(180deg, #ffffff 0%, #e8f4fc 100%);
}

html[data-theme="vanilla"] .music-switch {
  background: linear-gradient(180deg, #9eb9d0 0%, #6a8eab 100%);
  border-color: #3d6a8c;
  box-shadow: inset 0 2px 4px rgba(15, 50, 80, 0.35), 0 1px 0 rgba(255, 255, 255, 0.45);
}

html[data-theme="vanilla"] .music-thumb {
  background: linear-gradient(180deg, #f7fbff 0%, #c5d5e4 100%);
  border: 1px solid #7a9ab4;
  box-shadow: 0 1px 3px rgba(15, 50, 80, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

html[data-theme="vanilla"] .music-toggle:has(input:checked) .music-switch {
  background: linear-gradient(180deg, #4aa3e0 0%, #1a6eb0 55%, #0f4f82 100%);
  border-color: #0a3d66;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 0 8px rgba(47, 125, 184, 0.45);
}

html[data-theme="vanilla"] .music-toggle:has(input:checked) .music-thumb {
  left: calc(100% - 1.05rem - 2px);
  background: linear-gradient(180deg, #ffffff 0%, #e8f4fc 100%);
}

html[data-theme="suburbia"] .music-switch {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(0, 122, 47, 0.55);
  box-shadow: 0 2px 8px rgba(20, 60, 90, 0.25), inset 0 1px 3px rgba(20, 60, 90, 0.12);
}

html[data-theme="suburbia"] .music-thumb {
  background: #ffffff;
  border: 1px solid rgba(0, 122, 47, 0.35);
  box-shadow: 0 2px 4px rgba(20, 60, 90, 0.25);
}

html[data-theme="suburbia"] .music-toggle:has(input:checked) .music-switch {
  background: linear-gradient(180deg, #3dd46a 0%, #00b140 100%);
  border-color: #006628;
  box-shadow: 0 2px 10px rgba(0, 177, 64, 0.45);
}

html[data-theme="suburbia"] .music-toggle:has(input:checked) .music-thumb {
  left: calc(100% - 1.05rem - 2px);
  background: #fff;
}

html[data-theme="latenight"] .music-switch {
  background: rgba(10, 8, 18, 0.9);
  border-color: #e84a9a;
  box-shadow: 0 0 8px rgba(232, 74, 154, 0.35), inset 0 0 6px rgba(0, 0, 0, 0.5);
}

html[data-theme="latenight"] .music-thumb {
  background: #c8d0dc;
  border: 1px solid rgba(232, 74, 154, 0.45);
  box-shadow: 0 0 6px rgba(232, 74, 154, 0.4);
}

html[data-theme="latenight"] .music-toggle:has(input:checked) .music-switch {
  border-color: #4fd1c5;
  background: rgba(79, 209, 197, 0.18);
  box-shadow: 0 0 12px rgba(79, 209, 197, 0.5), inset 0 0 8px rgba(79, 209, 197, 0.15);
}

html[data-theme="latenight"] .music-toggle:has(input:checked) .music-thumb {
  left: calc(100% - 1.05rem - 2px);
  background: #4fd1c5;
  box-shadow: 0 0 10px rgba(79, 209, 197, 0.85);
}

.music-toggle:has(input:focus-visible) .music-switch {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.foot {
  margin-top: 2rem;
  color: var(--foot-ink);
  font-size: 0.8rem;
  text-align: center;
}

.foot a {
  color: var(--foot-link);
  font-weight: 600;
}

html[data-theme="suburbia"] .foot {
  text-shadow: 0 1px 4px rgba(20, 60, 40, 0.55), 0 0 12px rgba(20, 60, 40, 0.35);
}

html[data-theme="suburbia"] .foot a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

html[data-theme="latenight"] .foot {
  text-shadow: 0 0 12px rgba(0, 0, 0, 0.8);
}

.foot p {
  margin: 0;
}

.disclaimer {
  margin-top: 0.35rem !important;
  opacity: 0.85;
  font-size: 0.72rem;
}

@media (prefers-reduced-motion: reduce) {
  .atmosphere-sky,
  .plumbob,
  .output.flash {
    animation: none;
  }

  .btn {
    transition: none;
  }

  .music-switch,
  .music-thumb {
    transition: none;
  }
}