:root {
  --bg: #0d0a0f;
  --bg-2: #161119;
  --card: #1c151f;
  --card-border: rgba(255, 255, 255, 0.08);
  --text: #f4eef2;
  --text-dim: #b9aebb;
  --text-faint: #7a6f7c;
  --accent: #e0475f;
  --accent-2: #ff8a65;
  --accent-glow: rgba(224, 71, 95, 0.35);
  --success: #4fd1a5;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(224, 71, 95, 0.16), transparent 60%),
    radial-gradient(800px 500px at 100% 100%, rgba(255, 138, 101, 0.08), transparent 60%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 460px;
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: 24px 20px 16px;
  position: relative;
}

.progress {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 22px;
}
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--card-border);
  transition: background 0.3s ease, transform 0.3s ease;
}
.dot.active {
  background: var(--accent);
  transform: scale(1.3);
}
.dot.done {
  background: var(--text-dim);
}
.progress.hidden { visibility: hidden; }

.screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  animation: fadeIn 0.45s ease both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

h1 {
  font-size: 1.65rem;
  line-height: 1.25;
  margin: 0 0 12px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.35rem;
  line-height: 1.3;
  margin: 0 0 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

p {
  color: var(--text-dim);
  line-height: 1.55;
  margin: 0 0 14px;
  font-size: 0.98rem;
  white-space: pre-line;
}

.dev-line {
  color: var(--text-faint);
  font-size: 0.82rem;
  font-style: italic;
  margin-bottom: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: none;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease, background 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  min-height: 52px;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #1a0e10;
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-primary:hover { box-shadow: 0 10px 30px var(--accent-glow); }
.btn-primary:disabled {
  opacity: 0.4;
  box-shadow: none;
  cursor: not-allowed;
}
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.card:focus-visible,
.chip:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
}

.btn-secondary {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--card-border);
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--card-border);
}

.btn-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 26px;
}

.cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 8px;
}

.card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.15s ease;
  text-align: left;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  backdrop-filter: blur(6px);
}
.card:active { transform: scale(0.985); }
.card .emoji { font-size: 1.4rem; flex-shrink: 0; }
.card .label { font-weight: 500; }
.card.selected {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(224,71,95,0.14), rgba(255,138,101,0.06));
  box-shadow: 0 0 0 1px var(--accent) inset;
}
.card .check {
  margin-left: auto;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--card-border);
  flex-shrink: 0;
  position: relative;
  transition: all 0.2s ease;
}
.card.selected .check {
  background: var(--accent);
  border-color: var(--accent);
}
.card.selected .check::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 9px;
  border: solid #1a0e10;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.card.day-card {
  justify-content: space-between;
}
.day-info { display: flex; flex-direction: column; }
.day-weekday { font-weight: 600; }
.day-date { color: var(--text-faint); font-size: 0.85rem; }

.hint {
  color: var(--text-faint);
  font-size: 0.85rem;
  margin: -6px 0 16px;
}

/* processing */
.processing {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 26px;
  text-align: center;
  padding: 20px 0;
}
.spinner {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 3px solid var(--card-border);
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.proc-lines {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 140px;
  width: 100%;
}
.proc-line {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.35s ease, transform 0.35s ease;
  color: var(--text-dim);
  font-size: 0.95rem;
}
.proc-line.show {
  opacity: 1;
  transform: translateY(0);
}
.proc-line.final {
  color: var(--success);
  font-weight: 600;
}

/* result */
.result-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--card-border);
}
.result-row:last-child { border-bottom: none; }
.result-row .k { color: var(--text-faint); font-size: 0.85rem; }
.result-row .v { font-weight: 600; text-align: right; }

.score-wrap {
  text-align: center;
  margin: 22px 0 6px;
}
.score-num {
  font-size: 2.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}
.score-label {
  color: var(--text-faint);
  font-size: 0.8rem;
  margin-top: 6px;
}

.locked-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(79, 209, 165, 0.12);
  color: var(--success);
  border: 1px solid rgba(79, 209, 165, 0.35);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: var(--bg);
  padding: 12px 20px;
  border-radius: 18px;
  font-size: 0.88rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 50;
  max-width: calc(100vw - 40px);
  width: max-content;
  text-align: center;
  white-space: normal;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.reset-link {
  display: block;
  margin: 18px auto 0;
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 0.8rem;
  font-family: inherit;
  cursor: pointer;
  padding: 8px;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.reset-link:hover { color: var(--text-dim); }

.footer {
  text-align: center;
  margin-top: 20px;
  padding-top: 10px;
}
.footer p {
  color: var(--text-faint);
  font-size: 0.76rem;
  margin: 2px 0;
}
.footer .version { opacity: 0.7; }

@media (min-width: 480px) {
  .app { padding-top: 48px; }
  h1 { font-size: 1.9rem; }
}

@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;
  }
}