*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink: #0d0f1a;
  --ink2: #3a3d52;
  --ink3: #6b6f87;
  --surface: #f4f3f0;
  --white: #ffffff;
  --blue: #2d5be3;
  --blue-light: #e8edfd;
  --indigo: #4f35d6;
  --green: #1a8c5b;
  --green-light: #d4f5e8;
  --amber: #c47b0a;
  --amber-light: #fef3d8;
  --border: rgba(13,15,26,0.1);
  --border-strong: rgba(13,15,26,0.2);
  --shadow-sm: 0 1px 3px rgba(13,15,26,0.08);
  --shadow-md: 0 4px 16px rgba(13,15,26,0.1);
  --shadow-lg: 0 12px 48px rgba(13,15,26,0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

.sc-wrap { font-family: 'DM Sans', sans-serif; color: var(--ink); max-width: 860px; margin: 0 auto; padding: 2rem 1rem 4rem; }

/* HERO */
.sc-hero { background: var(--ink); color: #fff; border-radius: var(--radius-xl); padding: 3.5rem 2.5rem 3rem; margin-bottom: 2rem; position: relative; overflow: hidden; }
.sc-hero::before { content: ''; position: absolute; top: -80px; right: -60px; width: 320px; height: 320px; background: radial-gradient(circle, rgba(79,53,214,0.4) 0%, transparent 70%); pointer-events: none; }
.sc-hero::after { content: ''; position: absolute; bottom: -60px; left: -40px; width: 240px; height: 240px; background: radial-gradient(circle, rgba(45,91,227,0.35) 0%, transparent 70%); pointer-events: none; }
.sc-hero-inner { position: relative; z-index: 1; }
.sc-hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12); border-radius: 999px; padding: 6px 14px; font-size: 12px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: rgba(255,255,255,0.7); margin-bottom: 1.25rem; }
.sc-hero-eyebrow span { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #7dd3a8; animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.5;transform:scale(1.4)} }
.sc-hero h1 { font-family:  sans-serif; font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; line-height: 1.1; color: #fff; margin-bottom: 1rem; }
.sc-hero h1 em { font-style: normal; background: linear-gradient(135deg, #7dd3a8, #60a5fa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.sc-hero p { font-size: 1.05rem; color: rgba(255,255,255,0.6); max-width: 560px; line-height: 1.65; }
.sc-hero-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 1.75rem; }
.sc-pill { background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1); border-radius: 999px; padding: 5px 12px; font-size: 12px; color: rgba(255,255,255,0.6); }

/* MODE TABS */
.sc-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; background: var(--surface); border-radius: var(--radius-lg); padding: 6px; margin-bottom: 2rem; }
.sc-tab { padding: 14px; text-align: center; border-radius: 14px; cursor: pointer; font-weight: 500; font-size: 0.95rem; color: var(--ink3); transition: all 0.22s ease; border: none; background: transparent; display: flex; align-items: center; justify-content: center; gap: 8px; }
.sc-tab svg { width: 18px; height: 18px; flex-shrink: 0; }
.sc-tab.active { background: var(--white); color: var(--ink); box-shadow: var(--shadow-md); }
.sc-tab:hover:not(.active) { color: var(--ink2); background: rgba(255,255,255,0.5); }

/* CARD */
.sc-card { background: var(--white); border-radius: var(--radius-xl); border: 1px solid var(--border); padding: 2rem; margin-bottom: 2rem; box-shadow: var(--shadow-sm); }

/* FORM */
.sc-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.25rem; }
.sc-field { display: flex; flex-direction: column; gap: 6px; }
.sc-field label { font-size: 13px; font-weight: 500; color: var(--ink2); letter-spacing: 0.02em; }
.sc-field input[type="time"],
.sc-field select { width: 100%; padding: 12px 14px; border: 1.5px solid var(--border); border-radius: var(--radius); font-family: 'DM Sans', sans-serif; font-size: 0.95rem; color: var(--ink); background: var(--surface); transition: border-color 0.18s, box-shadow 0.18s; appearance: none; -webkit-appearance: none; cursor: pointer; }
.sc-field input[type="time"]:focus,
.sc-field select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(45,91,227,0.12); background: #fff; }

/* AGE CHIPS */
.sc-age-row { margin-bottom: 1.5rem; }
.sc-age-row label { font-size: 13px; font-weight: 500; color: var(--ink2); margin-bottom: 10px; display: block; }
.sc-age-chips { display: flex; flex-wrap: wrap; gap: 7px; }
.sc-age-chip { padding: 7px 14px; border-radius: 999px; border: 1.5px solid var(--border); background: var(--white); font-size: 13px; font-weight: 500; color: var(--ink2); cursor: pointer; transition: all 0.18s ease; }
.sc-age-chip:hover { border-color: var(--blue); color: var(--blue); }
.sc-age-chip.active { background: var(--blue); color: #fff; border-color: var(--blue); }

/* CALC BUTTON */
.sc-btn { width: 100%; padding: 15px; background: var(--ink); color: #fff; border: none; border-radius: var(--radius); font-family: sans-serif; font-size: 1rem; font-weight: 700; cursor: pointer; letter-spacing: 0.03em; transition: all 0.2s; display: flex; align-items: center; justify-content: center; gap: 8px; }
.sc-btn:hover { background: var(--indigo); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(79,53,214,0.3); }
.sc-btn:active { transform: translateY(0); }

/* RESULTS */
.sc-results { display: none; }
.sc-results.visible { display: block; animation: fadeUp 0.35s ease; }
@keyframes fadeUp { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:translateY(0)} }

.sc-info-banner { background: var(--amber-light); border-left: 3px solid var(--amber); border-radius: 0 var(--radius) var(--radius) 0; padding: 14px 16px; margin-bottom: 1.5rem; font-size: 0.9rem; color: #7c4d0a; line-height: 1.6; }
.sc-info-banner strong { color: var(--amber); }

.sc-stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 1.5rem; }
.sc-stat { background: var(--surface); border-radius: var(--radius); padding: 14px; text-align: center; }
.sc-stat-val { font-family:  sans-serif; font-size: 1.6rem; font-weight: 800; color: var(--ink); }
.sc-stat-lbl { font-size: 11px; font-weight: 500; color: var(--ink3); text-transform: uppercase; letter-spacing: 0.06em; margin-top: 2px; }

.sc-results-label { font-family: sans-serif; font-size: 1.05rem; font-weight: 700; color: var(--ink); margin-bottom: 12px; }

.sc-times-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.sc-time-card { background: var(--surface); border-radius: var(--radius-lg); padding: 18px 12px; text-align: center; border: 1.5px solid transparent; cursor: pointer; transition: all 0.2s ease; position: relative; }
.sc-time-card:hover { border-color: var(--blue); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.sc-time-card.ideal { background: var(--green-light); border-color: rgba(26,140,91,0.3); }
.sc-ideal-badge { position: absolute; top: -9px; left: 50%; transform: translateX(-50%); background: var(--green); color: #fff; font-size: 10px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.sc-cycles-lbl { font-size: 11px; font-weight: 600; color: var(--ink3); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; }
.sc-time-val { font-family:  sans-serif; font-size: 1.45rem; font-weight: 800; color: var(--ink); line-height: 1; }
.sc-hours-lbl { font-size: 12px; color: var(--ink3); margin-top: 5px; }
.sc-time-card.ideal .sc-cycles-lbl { color: var(--green); }
.sc-time-card.ideal .sc-time-val { color: #0e5c3a; }

/* CYCLE VIZ */
.sc-viz-wrap { margin: 2rem 0 0; }
.sc-viz-label { font-size: 13px; font-weight: 500; color: var(--ink3); margin-bottom: 10px; }
.sc-cycle-bar { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.sc-cycle-seg { height: 28px; border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 600; color: rgba(255,255,255,0.9); letter-spacing: 0.04em; overflow: hidden; white-space: nowrap; transition: width 0.4s ease; }
.sc-cycle-time { font-size: 12px; font-weight: 600; color: var(--ink3); min-width: 40px; }

/* TIPS */
.sc-tips { background: var(--white); border-radius: var(--radius-xl); border: 1px solid var(--border); padding: 2rem; margin-bottom: 2rem; }
.sc-tips-title { font-family:  sans-serif; font-size: 1.3rem; font-weight: 800; color: var(--ink); margin-bottom: 1.25rem; }
.sc-tips-grid { display: grid; gap: 10px; }
.sc-tip { display: flex; gap: 14px; align-items: flex-start; padding: 14px; background: var(--surface); border-radius: var(--radius); }
.sc-tip-icon { width: 36px; height: 36px; border-radius: 10px; background: var(--ink); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.sc-tip-icon svg { width: 16px; height: 16px; color: #fff; }
.sc-tip-body h4 { font-size: 0.9rem; font-weight: 600; color: var(--ink); margin-bottom: 3px; }
.sc-tip-body p { font-size: 0.85rem; color: var(--ink3); line-height: 1.55; }

/* FAQ */
.sc-faq { background: var(--white); border-radius: var(--radius-xl); border: 1px solid var(--border); overflow: hidden; margin-bottom: 2rem; }
.sc-faq-title { font-family:  sans-serif; font-size: 1.3rem; font-weight: 800; color: var(--ink); padding: 1.75rem 2rem 0; margin-bottom: 1rem; }
.sc-faq-item { border-top: 1px solid var(--border); }
.sc-faq-q { width: 100%; padding: 1.1rem 2rem; background: none; border: none; text-align: left; font-family: 'DM Sans', sans-serif; font-size: 0.95rem; font-weight: 500; color: var(--ink); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 1rem; transition: background 0.15s; }
.sc-faq-q:hover { background: var(--surface); }
.sc-faq-q .faq-icon { width: 20px; height: 20px; border-radius: 50%; background: var(--surface); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: transform 0.2s, background 0.2s; }
.sc-faq-q.open .faq-icon { background: var(--ink); border-color: var(--ink); transform: rotate(45deg); }
.sc-faq-q.open .faq-icon svg { color: #fff; }
.sc-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s; }
.sc-faq-a.open { max-height: 400px; padding: 0 2rem 1.25rem; }
.sc-faq-a p { font-size: 0.9rem; color: var(--ink3); line-height: 1.65; }

/* SCIENCE */
.sc-science { background: var(--blue-light); border-radius: var(--radius-xl); padding: 2rem; margin-bottom: 2rem; border: 1px solid rgba(45,91,227,0.12); }
.sc-science h3 { font-family:  sans-serif; font-size: 1.15rem; font-weight: 800; color: var(--blue); margin-bottom: 0.75rem; }
.sc-science p { font-size: 0.9rem; color: #1e3370; line-height: 1.65; }
.sc-stages { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; margin-top: 1.25rem; }
.sc-stage { background: rgba(255,255,255,0.7); border-radius: var(--radius); padding: 12px 14px; border: 1px solid rgba(45,91,227,0.15); }
.sc-stage-name { font-size: 12px; font-weight: 700; color: var(--blue); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
.sc-stage-desc { font-size: 12px; color: #1e3370; line-height: 1.5; }

/* CONTENT */
.main-content { max-width: 860px; margin: 0 auto; padding: 0 1rem 4rem; }
.main-content h2 { font-family:  sans-serif; font-size: 1.4rem; font-weight: 800; color: var(--ink); margin: 2.5rem 0 0.75rem; }
.main-content p, .main-content li { font-size: 0.95rem; color: var(--ink2); line-height: 1.75; }
.main-content ul, .main-content ol { padding-left: 1.4rem; margin: 0.5rem 0; }
.main-content li { margin-bottom: 0.4rem; }
.main-content a { color: var(--blue); text-decoration: none; font-weight: 500; }
.main-content a:hover { text-decoration: underline; }
.update-date { font-size: 12px; color: var(--ink3); margin-top: 2rem; }

/* RESPONSIVE */
@media (max-width: 600px) {
  .sc-field-row { grid-template-columns: 1fr; }
  .sc-stats-row { grid-template-columns: repeat(3,1fr); }
  .sc-hero { padding: 2rem 1.5rem; }
  .sc-hero h1 { font-size: 1.9rem; }
  .sc-times-grid { grid-template-columns: repeat(2,1fr); }
  .sc-card { padding: 1.25rem; }
  .sc-faq-q, .sc-faq-a.open { padding-left: 1.25rem; padding-right: 1.25rem; }
  .sc-faq-title { padding: 1.25rem 1.25rem 0; }
  .sc-tips { padding: 1.25rem; }
}