:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,sans-serif;color:#1f2933;background:radial-gradient(circle at top,#fdf2ff 0,#f5fbff 40%,#f9fafb 100%)}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100vh}.app-root{min-height:100vh;display:flex;align-items:stretch;justify-content:center;padding:32px 16px}.app-card{max-width:960px;width:100%;margin:auto;background:rgba(255,255,255,.9);border-radius:24px;padding:24px 20px 28px;box-shadow:0 20px 45px #0f172a14;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}@media (min-width: 768px){.app-card{padding:32px 32px 36px}}.app-header h1{margin:0 0 6px;font-size:24px}.app-header .subtitle{margin:0;color:#6b7280;font-size:14px}.section{margin-top:24px}.section h2{margin:0 0 12px;font-size:18px}.grid{display:grid;gap:16px}@media (min-width: 768px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}}.field{display:flex;flex-direction:column;gap:6px;font-size:14px}.field label{font-weight:500}.field input[type=date],.field input[type=number]{border-radius:12px;border:1px solid #e5e7eb;padding:8px 10px;font-size:14px;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.field input:focus{border-color:#a855f7;box-shadow:0 0 0 1px #a855f733}.field small{color:#9ca3af;font-size:12px}.toggle{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:14px;cursor:pointer;color:#4b5563}.toggle input{width:16px;height:16px}.hint{margin:8px 0 0;color:#9ca3af;font-size:14px}.summary-grid{display:grid;gap:16px;margin-top:4px}@media (min-width: 640px){.summary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.summary-card{border-radius:18px;padding:14px 14px 16px;background:#f9fafb;border:1px solid #e5e7eb}.summary-card.period{background:linear-gradient(135deg,#fee2f2,#eff6ff);border-color:#fb7185}.summary-card.ovulation{background:linear-gradient(135deg,#ede9fe,#f5f3ff);border-color:#a855f7}.summary-card.pregnancy{background:linear-gradient(135deg,#dcfce7,#e0f2fe);border-color:#22c55e}.summary-card.today{background:linear-gradient(135deg,#e0f2fe,#f5e0ff);border-color:#3b82f6}.summary-card h3{margin:0 0 4px;font-size:15px}.summary-card .main{margin:0;font-size:18px;font-weight:600}.summary-card .sub{margin:4px 0 0;font-size:13px;color:#4b5563}.disclaimer{margin-top:12px;font-size:12px;color:#6b7280}.calendar{margin-top:8px;border-radius:18px;padding:12px 12px 10px;background:rgba(248,250,252,.9);border:1px solid #e5e7eb}.calendar-header{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:14px;font-weight:500;color:#4b5563;margin-bottom:8px}.calendar-month-label{flex:1;text-align:center}.calendar-nav-button{border:none;background:transparent;padding:2px 8px;border-radius:999px;cursor:pointer;font-size:16px;line-height:1;color:#6b7280}.calendar-nav-button:hover{background:rgba(148,163,184,.2)}.calendar-weekdays{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));font-size:11px;color:#9ca3af;text-align:center;margin-bottom:4px}.weekday{padding:2px 0}.calendar-days{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));font-size:12px}.day-cell{height:30px;margin:2px;border-radius:999px;display:flex;align-items:center;justify-content:center;color:#111827}.day-cell.empty{background:transparent}.day-cell.period{background:#fecdd3}.day-cell.fertile{background:#bbf7d0}.day-cell.ovulation{box-shadow:0 0 0 2px #a855f7 inset}.day-cell.today{box-shadow:0 0 0 1px #0ea5e9 inset;font-weight:600}.calendar-legend{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px;font-size:11px;color:#6b7280}.legend-item{display:inline-flex;align-items:center;gap:4px}.legend-dot{width:10px;height:10px;border-radius:999px}.legend-dot.period{background:#fb7185}.legend-dot.fertile{background:#22c55e}.legend-dot.ovulation{border:2px solid #a855f7}.legend-dot.today{border:2px solid #0ea5e9}.app-logo{width:40px;height:40px;border-radius:12px;margin-right:12px}