:root {
  --rose-900: #831843;
  --rose-700: #be123c;
  --rose-600: #e11d48;
  --rose-100: #ffe4e6;
  --rose-50: #fff1f2;
  --gold: #d97706;
  --gold-light: #fef3c7;
  --ink: #4c0519;
  --blue-boy: #1d4ed8;
  --blue-boy-bg: #dbeafe;
  --pink-girl: #be185d;
  --pink-girl-bg: #fce7f3;
  --card-bg: #ffffff;
  --text-soft: #831843;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(131, 24, 67, 0.10);
}

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

body {
  font-family: "Cairo", "Segoe UI", Tahoma, system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #fdf2f8 0%, #fce7f3 40%, #fff7ed 100%);
  min-height: 100vh;
  line-height: 1.7;
}

.container { max-width: 980px; margin: 0 auto; padding: 0 20px; }

/* Hero */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--rose-900), var(--rose-600) 55%, #db2777);
  color: #fff;
  padding: 56px 0 64px;
  overflow: hidden;
  text-align: center;
}
.hero-decor {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,.14) 0, transparent 34%),
    radial-gradient(circle at 85% 80%, rgba(253,230,138,.18) 0, transparent 38%),
    radial-gradient(circle at 70% 10%, rgba(255,255,255,.10) 0, transparent 28%);
}
.hero-inner { position: relative; z-index: 1; }
.badge {
  display: inline-block;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.35);
  padding: 4px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
}
.hero h1 { font-size: clamp(26px, 4.4vw, 42px); font-weight: 900; margin-bottom: 10px; }
.subtitle { max-width: 640px; margin: 0 auto; font-size: clamp(15px, 2vw, 17px); opacity: .95; }

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 30px 28px;
  margin: 26px 0;
}
.card h2 { color: var(--rose-900); font-size: 22px; margin-bottom: 18px; }

/* Calculator form */
.field { margin-bottom: 20px; }
.field label, .field legend {
  display: block;
  font-weight: 700;
  color: var(--text-soft);
  margin-bottom: 8px;
  font-size: 15px;
}
.field small { color: #9f1239; opacity: .8; font-size: 12.5px; }

input[type="date"] {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--rose-50);
  border: 2px solid var(--rose-100);
  border-radius: 12px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
input[type="date"]:focus {
  border-color: var(--rose-600);
  box-shadow: 0 0 0 3px rgba(225, 29, 72, .12);
}

.radio-group { border: none; padding: 0; }
.radio-group legend { margin-bottom: 10px; }
.radio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 18px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-soft);
}
.radio input { accent-color: var(--rose-600); width: 17px; height: 17px; }

.btn {
  width: 100%;
  padding: 14px;
  font-family: inherit;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--rose-700), var(--rose-600));
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .15s, box-shadow .2s;
  box-shadow: 0 6px 18px rgba(225, 29, 72, .30);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(225, 29, 72, .38); }
.btn:active { transform: translateY(0); }

/* Result */
.result.hidden { display: none; }
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.stat {
  text-align: center;
  background: var(--rose-50);
  border: 1px solid var(--rose-100);
  border-radius: 14px;
  padding: 14px 10px;
}
.stat-label { display: block; font-size: 13px; color: var(--text-soft); font-weight: 600; }
.stat-value { display: block; font-size: 24px; font-weight: 900; color: var(--rose-900); margin-top: 4px; }
.stat-value.small { font-size: 17px; }

.prediction {
  text-align: center;
  border-radius: 16px;
  padding: 26px 20px;
  border: 2px solid;
}
.prediction.boy { background: var(--blue-boy-bg); border-color: #93c5fd; }
.prediction.girl { background: var(--pink-girl-bg); border-color: #f9a8d4; }
.prediction.out { background: var(--gold-light); border-color: #fcd34d; }
.pred-label { font-size: 14px; font-weight: 700; opacity: .85; margin-bottom: 4px; }
.prediction.boy .pred-label { color: var(--blue-boy); }
.prediction.girl .pred-label { color: var(--pink-girl); }
.prediction.out .pred-label { color: #92400e; }
.pred-value { font-size: 42px; font-weight: 900; }
.prediction.boy .pred-value { color: var(--blue-boy); }
.prediction.girl .pred-value { color: var(--pink-girl); }
.prediction.out .pred-value { color: #b45309; }
.pred-note { margin-top: 8px; font-size: 13.5px; opacity: .9; }
.prediction.boy .pred-note { color: #1e40af; }
.prediction.girl .pred-note { color: #9d174d; }
.prediction.out .pred-note { color: #92400e; }

/* Chart table */
.table-desc { color: var(--text-soft); font-size: 14px; margin-bottom: 12px; }
.legend { margin-bottom: 14px; }
.lg {
  display: inline-block;
  padding: 3px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  margin-left: 8px;
}
.lg.boy { background: var(--blue-boy-bg); color: var(--blue-boy); }
.lg.girl { background: var(--pink-girl-bg); color: var(--pink-girl); }

.table-wrap { overflow-x: auto; border-radius: 12px; }
.chart {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 640px;
}
.chart th, .chart td {
  border: 1px solid var(--rose-100);
  padding: 8px 4px;
  text-align: center;
}
.chart thead th { background: var(--rose-900); color: #fff; font-weight: 700; }
.chart thead th.corner { background: var(--rose-700); }
.chart tbody th {
  background: var(--rose-50);
  color: var(--rose-900);
  font-weight: 700;
  white-space: nowrap;
}
.chart td.b { background: var(--blue-boy-bg); color: var(--blue-boy); font-weight: 700; }
.chart td.g { background: var(--pink-girl-bg); color: var(--pink-girl); font-weight: 700; }
.chart td.hit {
  outline: 3px solid var(--gold);
  outline-offset: -3px;
  position: relative;
  transform: scale(1.06);
  z-index: 1;
  box-shadow: 0 0 0 4px rgba(217, 119, 6, .35);
}

/* Notice */
.notice { background: var(--gold-light); border: 1px solid #fcd34d; }
.notice h2 { color: #92400e; }
.notice p { font-size: 15px; color: #78350f; margin-bottom: 10px; }
.notice p:last-child { margin-bottom: 0; font-weight: 700; }

/* Footer */
.footer {
  text-align: center;
  padding: 24px 0 34px;
  color: var(--text-soft);
  font-size: 14px;
}

@media (max-width: 480px) {
  .card { padding: 22px 18px; }
  .radio { display: block; margin-bottom: 10px; }
}