:root {
  color-scheme: light dark;
  --bg: #eff4fb;
  --bg2: #d6e1f1;
  --panel: rgba(255, 255, 255, 0.68);
  --panel-strong: rgba(255, 255, 255, 0.82);
  --card: rgba(255, 255, 255, 0.6);
  --border: rgba(97, 117, 147, 0.18);
  --text: #203044;
  --muted: #66768d;
  --accent: #4f7cff;
  --accent-soft: rgba(79, 124, 255, 0.14);
  --shadow: 0 24px 70px rgba(52, 70, 95, 0.18);
  --glow: 0 0 30px rgba(118, 165, 255, 0.22);
}

[data-theme="dark"] {
  --bg: #07101d;
  --bg2: #13233c;
  --panel: rgba(12, 19, 32, 0.68);
  --panel-strong: rgba(14, 22, 36, 0.88);
  --card: rgba(255, 255, 255, 0.05);
  --border: rgba(135, 162, 232, 0.14);
  --text: #edf2fc;
  --muted: #97a5bb;
  --accent: #8fb0ff;
  --accent-soft: rgba(143, 176, 255, 0.16);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
  --glow: 0 0 36px rgba(143, 176, 255, 0.24);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: "Noto Sans TC", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, color-mix(in srgb, var(--accent), transparent 82%), transparent 34%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
  color: var(--text);
}

body { transition: background 220ms ease, color 220ms ease; }
button, input, textarea { font: inherit; }

.app-shell {
  min-height: 100vh;
  padding: clamp(12px, 2vw, 22px);
}

.journal-experience {
  min-height: calc(100vh - clamp(24px, 4vw, 44px));
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 14px;
  padding: clamp(14px, 2vw, 18px);
  border: 1px solid var(--border);
  border-radius: 30px;
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(240px, 1.15fr) minmax(0, 1.85fr);
  gap: 14px;
  align-items: center;
}

.kicker, .stage-label, .summary-meta-label, .field span {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

.title-row h1, .floating-card h2 { margin: 0; }
.title-row h1 {
  font-size: clamp(1.5rem, 2vw, 2.15rem);
  line-height: 1.15;
}

.header-home-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
}

.topbar-right {
  display: grid;
  grid-template-columns: minmax(140px, 0.78fr) minmax(140px, 1fr) auto auto;
  gap: 10px;
  align-items: center;
}

.field { display: grid; gap: 6px; min-width: 0; }

.field input, .question-text {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  color: var(--text);
  outline: none;
}

.field input {
  min-height: 42px;
  padding: 10px 12px;
}

.field input:focus, .question-text:focus {
  border-color: color-mix(in srgb, var(--accent), white 18%);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.presence-widget {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
}

.breathing-light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent), white 16%);
  box-shadow: var(--glow);
  animation: breathe 4.8s ease-in-out infinite;
}

.clock {
  font-size: 0.92rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}

.theme-toggle {
  width: 62px;
  height: 42px;
  padding: 0;
  border: 0;
  background: transparent;
}

.theme-toggle-track {
  position: relative;
  display: block;
  width: 62px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
}

.theme-toggle-thumb {
  position: absolute;
  top: 5px;
  left: 5px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent), white 36%), var(--accent));
  box-shadow: 0 8px 18px rgba(59, 78, 111, 0.28);
  transition: transform 220ms ease;
}

[data-theme="dark"] .theme-toggle-thumb { transform: translateX(20px); }

.scene {
  position: relative;
  min-height: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 24px;
}

.lake-backdrop {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.firefly-field {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.firefly {
  position: absolute;
  width: var(--size, 8px);
  height: var(--size, 8px);
  left: var(--x, 50%);
  top: var(--y, 50%);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255, 248, 186, 0.95) 0%, rgba(255, 232, 138, 0.72) 34%, rgba(255, 232, 138, 0.08) 70%, transparent 100%);
  box-shadow:
    0 0 12px rgba(255, 234, 148, 0.36),
    0 0 28px rgba(143, 176, 255, 0.12);
  opacity: 0;
  animation:
    firefly-float var(--drift, 18s) ease-in-out infinite,
    firefly-glow var(--pulse, 5.5s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

[data-theme="light"] .firefly {
  box-shadow:
    0 0 10px rgba(255, 224, 125, 0.24),
    0 0 22px rgba(117, 146, 214, 0.08);
}

.lake-ring, .lake-glow {
  position: absolute;
  left: 50%;
  top: 58%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

.lake-ring {
  border: 1px solid color-mix(in srgb, var(--accent), transparent 72%);
  opacity: 0;
  animation: ripple 8.8s ease-out infinite;
}

.ring-a { width: 260px; height: 260px; animation-delay: 0s; }
.ring-b { width: 260px; height: 260px; animation-delay: -2.9s; }
.ring-c { width: 260px; height: 260px; animation-delay: -5.8s; }

.lake-glow {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent), transparent 78%) 0%, transparent 70%);
  filter: blur(18px);
}

.stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 12px;
  opacity: 0;
  transform: translateY(26px) scale(0.985);
  pointer-events: none;
  transition: opacity 420ms ease, transform 520ms ease;
}

.stage.is-active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.floating-card {
  width: min(760px, 100%);
  border-radius: 30px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel-strong), white 4%), var(--panel));
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

.intro-card {
  padding: clamp(26px, 4vw, 44px);
  text-align: center;
}

.intro-card h2 {
  margin-top: 10px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.15;
  text-wrap: balance;
}

.stage-copy {
  max-width: 34rem;
  margin: 18px auto 0;
  color: var(--muted);
  line-height: 1.9;
}

.question-card {
  display: grid;
  grid-template-rows: auto minmax(180px, 1fr) auto auto;
  gap: 18px;
  min-height: min(74vh, 760px);
  padding: clamp(22px, 3vw, 28px);
  transform-origin: center 72%;
  transition:
    opacity 340ms ease,
    transform 520ms cubic-bezier(0.22, 1, 0.36, 1),
    filter 340ms ease;
  will-change: transform, opacity, filter;
}

.question-card.is-transitioning {
  pointer-events: none;
}

.question-card.is-exit-next {
  opacity: 0;
  transform: translateY(54px) scale(0.97);
  filter: blur(8px);
}

.question-card.is-enter-next {
  opacity: 0;
  transform: translateY(-42px) scale(1.015);
  filter: blur(10px);
}

.question-card.is-exit-prev {
  opacity: 0;
  transform: translateY(-34px) scale(0.985);
  filter: blur(7px);
}

.question-card.is-enter-prev {
  opacity: 0;
  transform: translateY(34px) scale(1.01);
  filter: blur(8px);
}

.question-head, .summary-head, .question-actions, .summary-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.question-head h2, .summary-head h2 {
  margin-top: 8px;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  line-height: 1.2;
}

.image-button, .secondary-action, .primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
}

.image-button, .secondary-action {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--muted);
}

.primary-action {
  border: 1px solid transparent;
  background: color-mix(in srgb, var(--accent), transparent 24%);
  color: white;
  box-shadow: var(--glow);
}

.image-button { position: relative; flex-shrink: 0; }
.image-input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

.question-text {
  min-height: 0;
  height: 100%;
  padding: 18px 20px;
  resize: none;
  line-height: 1.8;
  font-size: 1.03rem;
}

.question-images {
  min-height: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: flex-start;
}

.image-item {
  width: min(100%, 190px);
  display: grid;
  gap: 8px;
  padding: 10px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.image-item img {
  display: block;
  width: var(--image-width, 100%);
  max-width: 100%;
  max-height: 130px;
  object-fit: contain;
  border-radius: 12px;
  margin: 0 auto;
}

.image-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.image-controls input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.remove-image {
  width: 26px;
  height: 26px;
  border: 0;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--text);
}

.question-actions { padding-top: 6px; }

.question-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex: 1;
}

.question-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--muted), transparent 56%);
}

.question-dots span.is-active {
  background: var(--accent);
  box-shadow: var(--glow);
}

.summary-shell {
  position: relative;
  width: min(1000px, 100%);
  transition: opacity 480ms ease, transform 500ms cubic-bezier(0.22, 1, 0.36, 1);
}
.summary-shell.is-dismissed {
  opacity: 0;
  transform: translateY(36px) scale(0.975);
  pointer-events: none;
}

.close-summary-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 10;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 200ms, color 200ms, transform 200ms;
}
.close-summary-btn:hover {
  background: var(--bg2);
  color: var(--text);
  transform: scale(1.1);
}

.reopen-summary-btn {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  opacity: 0;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-strong), transparent 20%);
  color: var(--muted);
  font-size: 0.875rem;
  cursor: pointer;
  backdrop-filter: blur(16px);
  transition: opacity 480ms ease, transform 480ms cubic-bezier(0.22, 1, 0.36, 1), color 200ms, background 200ms;
  white-space: nowrap;
}
.reopen-summary-btn.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.reopen-summary-btn:hover {
  color: var(--text);
  background: var(--bg2);
}

.summary-card {
  width: 100%;
  padding: 22px;
  max-height: min(78vh, 860px);
  overflow: auto;
}

.summary-card h2 {
  margin-top: 8px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.summary-board {
  margin-top: 18px;
  padding: 16px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
}

.summary-meta {
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.summary-meta-value {
  margin: 8px 0 0;
  font-weight: 600;
}

.summary-presence {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  min-height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.summary-item {
  min-height: 230px;
  padding: 16px;
  border-radius: 22px;
  border: 1px solid var(--border);
  background: var(--card);
}

.summary-item h3 { margin: 0; font-size: 1.08rem; }

.summary-text {
  margin-top: 12px;
  min-height: 88px;
  white-space: pre-wrap;
  line-height: 1.75;
  color: var(--text);
}

.summary-images {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.summary-images img {
  display: block;
  width: var(--image-width, 100%);
  max-width: 160px;
  max-height: 110px;
  object-fit: contain;
  border-radius: 12px;
  padding: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.export-button {
  position: fixed;
  right: clamp(18px, 3vw, 28px);
  bottom: 22px;
  z-index: 4;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent), transparent 28%);
  color: white;
  box-shadow: var(--glow);
  cursor: pointer;
  backdrop-filter: blur(12px);
}

.export-button.is-exporting,
.export-button[hidden] {
  opacity: 0;
  pointer-events: none;
}

@keyframes breathe {
  0%, 100% { transform: scale(0.78); opacity: 0.48; }
  50% { transform: scale(1.08); opacity: 1; }
}

@keyframes ripple {
  0% {
    transform: translate(-50%, -50%) scale(0.42);
    opacity: 0;
  }
  12% {
    opacity: 0.42;
  }
  40% {
    opacity: 0.24;
  }
  72% {
    opacity: 0.08;
  }
  100% {
    transform: translate(-50%, -50%) scale(2.65);
    opacity: 0;
  }
}

@keyframes firefly-glow {
  0%, 100% { opacity: 0.15; transform: scale(0.72); }
  50% { opacity: 0.95; transform: scale(1.08); }
}

@keyframes firefly-float {
  0%, 100% { translate: 0 0; }
  25% { translate: 14px -18px; }
  50% { translate: -10px -34px; }
  75% { translate: 12px -12px; }
}

@media (max-width: 1040px) {
  .topbar { grid-template-columns: 1fr; }
  .topbar-right { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto auto; }
}

@media (max-width: 760px) {
  .app-shell { padding-bottom: 90px; }
  .journal-experience {
    min-height: calc(100vh - 24px);
    grid-template-rows: auto minmax(520px, 1fr);
  }
  .topbar {
    gap: 10px;
  }
  .title-row {
    align-items: flex-start;
  }
  .topbar-right {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas:
      "date name"
      "presence toggle";
    align-items: end;
  }
  .field-date { grid-area: date; }
  .field-name { grid-area: name; }
  .presence-widget {
    grid-area: presence;
    justify-self: start;
    width: 100%;
    max-width: 160px;
  }
  .theme-toggle {
    grid-area: toggle;
    justify-self: end;
  }
  .scene {
    min-height: 560px;
    align-self: stretch;
  }
  .stage {
    padding: 8px;
  }
  .floating-card, .summary-shell { width: 100%; }
  .intro-card {
    padding: 24px 20px;
  }
  .intro-card h2 {
    font-size: clamp(1.4rem, 6.5vw, 2rem);
  }
  .question-card {
    min-height: min(540px, calc(100% - 8px));
    padding: 18px;
    gap: 14px;
  }
  .question-text {
    min-height: 170px;
  }
  .question-head, .summary-head, .question-actions, .summary-meta {
    flex-direction: column;
    align-items: stretch;
  }
  .question-dots {
    order: -1;
    flex: initial;
  }
  .summary-grid { grid-template-columns: 1fr; }
  .summary-card {
    max-height: min(74vh, 780px);
  }
}

@media (max-width: 480px) {
  .app-shell {
    padding: 10px 10px 84px;
  }
  .journal-experience {
    padding: 12px;
    border-radius: 24px;
    grid-template-rows: auto minmax(500px, 1fr);
  }
  .title-row h1 {
    font-size: 2rem;
  }
  .header-home-link {
    min-height: 34px;
    padding: 0 10px;
    font-size: 0.82rem;
  }
  .topbar-right {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "date date"
      "name name"
      "presence toggle";
    gap: 8px;
  }
  .field input {
    min-height: 40px;
  }
  .scene {
    min-height: 520px;
  }
  .question-card,
  .summary-card {
    border-radius: 24px;
  }
  .summary-card {
    max-height: calc(100vh - 250px);
  }
}