:root {
  --bg: #faf7ff;
  --bg-2: #f3eeff;
  --surface: #ffffff;
  --text: #3d3556;
  --text-soft: #7a7194;
  --border: rgba(125, 110, 160, 0.14);
  --shadow: 0 10px 40px rgba(120, 90, 180, 0.08);
  --radius: 20px;
  --radius-sm: 14px;
  --font: 'Nunito', system-ui, sans-serif;

  --mint: #b8ebd4;
  --mint-bg: #ecfbf4;
  --mint-text: #2d6b52;
  --lavender: #d4c8f5;
  --lavender-bg: #f3edff;
  --lavender-text: #5b4894;
  --peach: #ffd4c8;
  --peach-bg: #fff3ef;
  --peach-text: #9a4f3d;
  --sky: #c5e4ff;
  --sky-bg: #edf6ff;
  --sky-text: #2f5f8a;
  --rose: #f5c6e0;
  --rose-bg: #fff0f7;
  --rose-text: #8a3d62;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100dvh; }
body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(212, 200, 245, 0.45), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(197, 228, 255, 0.5), transparent 50%),
    radial-gradient(ellipse 50% 30% at 50% 100%, rgba(184, 235, 212, 0.35), transparent 50%),
    var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

#app { min-height: 100dvh; }

.shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.hero {
  text-align: center;
  margin-bottom: 28px;
  padding: 8px 0 4px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--lavender-bg);
  color: var(--lavender-text);
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 12px;
  border: 1px solid rgba(91, 72, 148, 0.1);
}
.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(1.6rem, 5vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
}
.hero p {
  margin: 0 auto;
  max-width: 420px;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.app-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: transform .2s ease, box-shadow .2s ease;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  width: 100%;
}
.app-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(120, 90, 180, 0.12);
}
.app-card:active { transform: translateY(-1px); }

.app-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
}
.app-card-icon svg { width: 26px; height: 26px; }
.app-card.mint .app-card-icon { background: var(--mint-bg); color: var(--mint-text); }
.app-card.lavender .app-card-icon { background: var(--lavender-bg); color: var(--lavender-text); }
.app-card.peach .app-card-icon { background: var(--peach-bg); color: var(--peach-text); }
.app-card.sky .app-card-icon { background: var(--sky-bg); color: var(--sky-text); }

.app-card h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
}
.app-card p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-soft);
  flex: 1;
}
.app-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--lavender-text);
}
.app-card-foot span { opacity: .85; }

.page-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow);
  text-decoration: none;
}
.back-btn:hover { background: var(--bg-2); }
.back-btn svg { width: 18px; height: 18px; }

.page-title { flex: 1; min-width: 0; }
.page-title h1 { margin: 0; font-size: 1.35rem; font-weight: 800; }
.page-title p { margin: 4px 0 0; font-size: 0.85rem; color: var(--text-soft); }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 20px;
  margin-bottom: 16px;
}

.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.tab {
  flex: 1;
  min-width: 100px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-2);
  color: var(--text-soft);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.tab.active {
  background: var(--mint-bg);
  color: var(--mint-text);
  border-color: rgba(45, 107, 82, 0.2);
}

.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-soft);
  margin-bottom: 6px;
}
.input-row { display: flex; gap: 10px; flex-wrap: wrap; }
.input-row .field { flex: 1; min-width: 80px; margin-bottom: 0; }

.input {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
}
.input:focus {
  outline: 2px solid rgba(184, 235, 212, 0.8);
  border-color: var(--mint);
}
.input::placeholder { color: #b0a8c4; font-weight: 500; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  border: none;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  transition: filter .15s, transform .1s;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: linear-gradient(135deg, #8ed4b8, #6bc4a8);
  color: #1f4d3a;
  width: 100%;
  margin-top: 6px;
}
.btn-primary:hover { filter: brightness(1.03); }
.btn-ghost {
  background: var(--bg-2);
  color: var(--text-soft);
  border: 1px solid var(--border);
}

.result-box {
  margin-top: 20px;
  padding: 20px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--mint-bg), var(--lavender-bg));
  border: 1px solid rgba(45, 107, 82, 0.12);
  text-align: center;
}
.result-box.hidden { display: none; }
.result-label {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-soft);
  margin-bottom: 6px;
}
.result-value {
  font-size: clamp(1.8rem, 6vw, 2.4rem);
  font-weight: 800;
  color: var(--mint-text);
  letter-spacing: -0.02em;
}
.result-extra {
  margin-top: 10px;
  font-size: 0.875rem;
  color: var(--text-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.result-extra strong { color: var(--text); }

.hint {
  font-size: 0.8rem;
  color: var(--text-soft);
  margin-top: 12px;
  padding: 12px 14px;
  background: var(--sky-bg);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(47, 95, 138, 0.1);
}

.pace-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.preset {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-soft);
  cursor: pointer;
  font-family: inherit;
}
.preset:hover { background: var(--mint-bg); color: var(--mint-text); }

.site-foot {
  text-align: center;
  margin-top: 32px;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.coming-soon {
  opacity: .55;
  pointer-events: none;
  filter: grayscale(0.2);
}

.hidden { display: none !important; }

@media (max-width: 640px) {
  .shell { padding: 16px 12px 36px; }
  .panel { padding: 18px 16px; }
  .tabs { flex-direction: column; }
  .tab { min-width: 0; }
  .input-row { flex-direction: column; }
}