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

:root {
  --coral: #FF6B6B;
  --coral-dark: #E55A5A;
  --coral-light: #FFE8E8;
  --ocean: #4ECDC4;
  --ocean-dark: #3DBDB5;
  --forest: #45B7AA;
  --forest-dark: #3AA89B;
  --midnight: #2C3E7B;
  --midnight-dark: #1F2D5E;
  --text: #2D2D2D;
  --text-light: #5A5A5A;
  --text-muted: #8A8A8A;
  --bg: #FFF9F5;
  --bg-card: #FFFFFF;
  --border: #E8DDD5;
  --border-focus: var(--coral);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--coral-dark); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }

img, svg { display: block; max-width: 100%; }

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--coral);
  color: #fff;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus { top: 16px; }

/* ===== Header ===== */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}
.logo:hover, .logo:focus-visible { text-decoration: none; }

.logo-icon { flex-shrink: 0; }

.main-nav {
  display: flex;
  gap: 20px;
}
.main-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  padding: 4px 0;
}
.main-nav a:hover, .main-nav a:focus-visible {
  color: var(--coral-dark);
  text-decoration: none;
}

/* ===== Hero ===== */
.hero {
  padding: 48px 0 32px;
  text-align: center;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--coral), var(--ocean));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 520px;
  margin: 0 auto;
}

/* ===== Generator ===== */
.generator {
  padding: 16px 0 48px;
}

.gen-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

@media (max-width: 768px) {
  .gen-layout { grid-template-columns: 1fr; }
}

.gen-form-panel,
.gen-result-panel {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.panel-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 20px;
}

/* ===== Form ===== */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
}

.required { color: var(--coral); }

.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg-card);
  transition: border-color var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(255,107,107,0.15);
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-select { cursor: pointer; }

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--coral);
  color: #fff;
  border-color: var(--coral);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--coral-dark);
  border-color: var(--coral-dark);
  text-decoration: none;
}

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover, .btn-secondary:focus-visible {
  background: var(--border);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
  text-decoration: underline;
  padding-left: 8px;
  padding-right: 8px;
}
.btn-ghost:hover, .btn-ghost:focus-visible {
  color: var(--text);
}

/* ===== Error ===== */
.error-banner {
  margin-top: 16px;
  padding: 12px 16px;
  background: #FFF0F0;
  border: 1px solid #FFCCCC;
  border-radius: var(--radius-sm);
  color: #CC3333;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== Milestone Card ===== */
.milestone-card {
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.card-empty {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.empty-icon { margin-bottom: 12px; }

/* Card themes */
.card-warm {
  background: linear-gradient(135deg, #FFF0E6, #FFE0D0);
  border: 2px solid #FFD0B0;
}
.card-ocean {
  background: linear-gradient(135deg, #E6FAF8, #D0F5F0);
  border: 2px solid #B0EBE5;
}
.card-forest {
  background: linear-gradient(135deg, #E6F7F0, #D0F0E5);
  border: 2px solid #B0E5D5;
}
.card-midnight {
  background: linear-gradient(135deg, #E8EAFF, #D5D8F5);
  border: 2px solid #B8BCE5;
}

.card-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  opacity: 0.7;
}

.card-names {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.card-duration {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 4px;
}

.card-detail {
  font-size: 0.9rem;
  opacity: 0.75;
  margin-bottom: 16px;
}

.card-joke {
  font-size: 0.88rem;
  font-style: italic;
  opacity: 0.8;
  max-width: 320px;
  margin: 0 auto;
  padding-top: 12px;
  border-top: 1px solid rgba(0,0,0,0.1);
}

.card-date {
  font-size: 0.75rem;
  opacity: 0.5;
  margin-top: 16px;
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.copy-confirm {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--forest);
  font-weight: 600;
}

/* ===== History ===== */
.history-section {
  padding: 32px 0 48px;
}

.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.history-empty {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  gap: 12px;
}

.history-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.history-names {
  font-weight: 600;
  font-size: 0.9rem;
}

.history-date {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.history-duration {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--coral-dark);
  white-space: nowrap;
}

.history-load {
  font-size: 0.78rem;
  padding: 4px 12px;
}

/* ===== Content Section ===== */
.content-section {
  padding: 32px 0 48px;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 640px) {
  .content-grid { grid-template-columns: 1fr; }
}

.content-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.content-block h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.content-block p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 8px;
}

.content-block p:last-child { margin-bottom: 0; }

/* ===== FAQ ===== */
.faq-section {
  padding: 32px 0 56px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-item summary {
  padding: 14px 18px;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text-muted);
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item[open] summary::after { content: '−'; }

.faq-item summary:hover { background: var(--coral-light); }

.faq-item p {
  padding: 0 18px 14px;
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ===== Footer ===== */
.site-footer {
  margin-top: auto;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

.footer-brand {
  font-weight: 700;
  font-size: 1rem;
}

.footer-nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-nav a:hover { color: var(--text); }

.footer-note,
.footer-updated {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===== Print ===== */
@media print {
  .site-header,
  .site-footer,
  .generator,
  .history-section,
  .content-section,
  .faq-section,
  .hero { display: none !important; }
  
  .gen-result-panel {
    box-shadow: none;
    border: none;
    padding: 0;
  }
  
  .milestone-card {
    border: 2px solid #333 !important;
    background: #fff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  
  .card-actions { display: none !important; }
}

/* ===== Focus Visible ===== */
*:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}