/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #fef7f0;
  --bg-card: #ffffff;
  --bg-card-hover: #fff0f5;
  --surface: #f0e6ef;
  --accent: #e8729a;
  --accent-glow: rgba(232, 114, 154, .25);
  --accent-2: #b48dd9;
  --accent-3: #6cc6a1;
  --text: #3d2e4a;
  --text-muted: #7a6b88;
  --text-dim: #b0a3b8;
  --success: #6cc6a1;
  --radius: 14px;
  --radius-sm: 10px;
  --transition: .25s cubic-bezier(.4, 0, .2, 1);
  --font: 'Noto Sans JP', sans-serif;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ===== Screens ===== */
.screen {
  display: none;
  min-height: 100dvh;
  justify-content: center;
  align-items: center;
  padding: 24px 16px;
}

.screen.active {
  display: flex;
}

/* ===== Hero / Start ===== */
.hero {
  text-align: center;
  max-width: 420px;
  animation: fadeUp .6s ease;
}

.hero-icon {
  font-size: 64px;
  margin-bottom: 16px;
  animation: float 3s ease-in-out infinite;
}

.hero h1 {
  font-size: 2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-note {
  margin-top: 16px;
  font-size: .8rem;
  color: var(--text-dim);
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border: none;
  padding: 14px 40px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px var(--accent-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: .4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text-muted);
  border: 1.5px solid var(--surface);
  padding: 12px 28px;
  border-radius: 50px;
  font-size: .9rem;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-secondary:disabled {
  opacity: .3;
  cursor: not-allowed;
}

.btn-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-3), #5bb895);
  color: #fff;
  border: none;
  padding: 10px 22px;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: var(--transition);
  margin-top: 12px;
  box-shadow: 0 2px 12px rgba(108, 198, 161, .3);
}

.btn-sm:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(108, 198, 161, .4);
}

/* ===== Step Screen ===== */
.step-container {
  width: 100%;
  max-width: 520px;
  animation: fadeUp .4s ease;
}

.progress-bar {
  width: 100%;
  height: 5px;
  background: var(--surface);
  border-radius: 50px;
  margin-bottom: 8px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 50px;
  transition: width .5s ease;
}

.step-label {
  text-align: center;
  font-size: .7rem;
  font-weight: 700;
  color: var(--accent-2);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.step-counter {
  text-align: center;
  font-size: .8rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.step-question {
  font-size: 1.35rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  line-height: 1.5;
}

.step-hint {
  text-align: center;
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* ===== Chips ===== */
.chips-area {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 32px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1.5px solid var(--surface);
  box-shadow: 0 1px 6px rgba(61, 46, 74, .05);
  color: var(--text);
  font-size: .95rem;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.chip:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
}

.chip.selected {
  background: linear-gradient(135deg, rgba(232, 114, 154, .12), rgba(180, 141, 217, .12));
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
  color: var(--accent);
  font-weight: 700;
}

.chip .chip-emoji {
  font-size: 1.15rem;
}

/* ===== Free Input ===== */
.free-input-area {
  margin-bottom: 32px;
}

.free-input {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--surface);
  background: var(--bg-card);
  color: var(--text);
  font-size: 1rem;
  font-family: var(--font);
  transition: var(--transition);
  resize: vertical;
  min-height: 48px;
}

.free-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.free-input::placeholder {
  color: var(--text-dim);
}

.hidden {
  display: none !important;
}

.step-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

/* ===== Result Screen ===== */
.result-container {
  width: 100%;
  max-width: 600px;
  animation: fadeUp .5s ease;
}

.result-header {
  text-align: center;
  margin-bottom: 28px;
}

.result-icon {
  font-size: 48px;
  margin-bottom: 8px;
}

.result-header h2 {
  font-size: 1.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--success));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-sub {
  color: var(--text-muted);
  font-size: .9rem;
  margin-top: 8px;
}

.result-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}

.result-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--surface);
  box-shadow: 0 2px 12px rgba(61, 46, 74, .06);
  transition: var(--transition);
}

.result-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.result-card-label {
  font-size: .75rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 8px;
}

.result-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.5;
}

.result-card-rq {
  font-size: .9rem;
  color: var(--accent-2);
  margin-bottom: 8px;
  line-height: 1.5;
}

.result-card-hint {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.result-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.result-footer {
  text-align: center;
  font-size: .8rem;
  color: var(--text-dim);
  margin-top: 12px;
}

/* ===== Design Sheet ===== */
.sheet-container {
  width: 100%;
  max-width: 640px;
  animation: fadeUp .5s ease;
}

.sheet-header {
  text-align: center;
  margin-bottom: 24px;
}

.sheet-header h2 {
  font-size: 1.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.design-sheet {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--surface);
  box-shadow: 0 2px 16px rgba(61, 46, 74, .08);
  margin-bottom: 24px;
}

.ds-row {
  margin-bottom: 20px;
}

.ds-row:last-child {
  margin-bottom: 0;
}

.ds-label {
  font-size: .75rem;
  font-weight: 700;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 6px;
}

.ds-value {
  font-size: .95rem;
  line-height: 1.7;
  color: var(--text);
}

.ds-divider {
  border: none;
  border-top: 1px dashed var(--surface);
  margin: 16px 0;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--success);
  color: #fff;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: .9rem;
  font-weight: 700;
  font-family: var(--font);
  opacity: 0;
  transition: var(--transition);
  z-index: 100;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ===== Animations ===== */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .step-question {
    font-size: 1.15rem;
  }

  .chip {
    padding: 10px 16px;
    font-size: .88rem;
  }

  .btn-primary {
    padding: 12px 32px;
    font-size: .95rem;
  }

  .design-sheet {
    padding: 20px 16px;
  }
}