* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #f5f7fa; color: #2c3e50; line-height: 1.6; }
.container { max-width: 860px; margin: 0 auto; padding: 0 20px 60px; }
.header { background: linear-gradient(135deg, #ff8fab 0%, #c77dff 100%); color: white; padding: 48px 20px 40px; text-align: center; }
.header h1 { font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.subtitle { font-size: 1.05rem; opacity: 0.9; font-weight: 300; }
.ad-space { margin: 24px auto; min-height: 90px; }
.card { background: white; border-radius: 12px; padding: 32px; box-shadow: 0 2px 12px rgba(0,0,0,0.07); border: 1px solid #eee; margin: 24px 0; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.input-group { display: flex; flex-direction: column; gap: 6px; }
.input-group label { font-size: 0.88rem; font-weight: 600; color: #555; }
.input-group input { padding: 11px 14px; border: 1.5px solid #dde2e8; border-radius: 8px; font-size: 0.95rem; color: #2c3e50; background: white; }
.input-group input:focus { outline: none; border-color: #c77dff; }
.calc-btn { width: 100%; padding: 14px; background: linear-gradient(135deg, #ff8fab, #c77dff); color: white; border: none; border-radius: 8px; font-size: 1rem; font-weight: 700; cursor: pointer; margin-top: 24px; }
.calc-btn:hover { opacity: 0.9; }
.results { display: none; }
.results.show { display: block; }
.result-highlight { background: linear-gradient(135deg, #c77dff15, #ff8fab15); border: 2px solid #c77dff30; border-radius: 12px; padding: 24px; text-align: center; margin-bottom: 24px; }
.result-highlight .big-number { font-size: 1.8rem; font-weight: 700; color: #c77dff; }
.result-highlight .big-label { font-size: 0.9rem; color: #7f8c8d; margin-top: 4px; }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 24px; }
.result-box { border-radius: 10px; padding: 16px; text-align: center; border: 1px solid #eee; }
.result-box .val { font-size: 1.1rem; font-weight: 700; }
.result-box .lbl { font-size: 0.8rem; color: #7f8c8d; margin-top: 4px; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; margin-bottom: 16px; }
.cal-header { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; margin-bottom: 4px; }
.cal-day-name { text-align: center; font-size: 0.72rem; font-weight: 700; color: #7f8c8d; padding: 4px 0; }
.cal-day { text-align: center; padding: 6px 4px; font-size: 0.8rem; border-radius: 6px; background: #f8f9fc; }
.cal-day.period { background: #ff8fab; color: white; font-weight: 600; }
.cal-day.fertile { background: #a8dadc; color: #1d3d47; font-weight: 600; }
.cal-day.ovulation { background: #c77dff; color: white; font-weight: 700; }
.cal-day.pms { background: #ffd6a5; color: #7c4f00; }
.cal-day.today { box-shadow: 0 0 0 2px #667eea; font-weight: 700; }
.cal-day.empty { background: transparent; }
.cal-month { font-size: 0.95rem; font-weight: 700; color: #2c3e50; margin: 16px 0 8px; }
.reset-btn { background: none; border: 2px solid #c77dff; color: #c77dff; padding: 10px 24px; border-radius: 8px; font-size: 0.95rem; font-weight: 600; cursor: pointer; margin-top: 20px; }
.reset-btn:hover { background: #c77dff; color: white; }
.info-section { background: white; border-radius: 12px; padding: 32px; margin: 24px 0; box-shadow: 0 2px 12px rgba(0,0,0,0.06); border: 1px solid #eee; }
.info-section h2 { font-size: 1.2rem; margin-bottom: 12px; }
.info-section p { color: #555; font-size: 0.93rem; line-height: 1.75; margin-bottom: 10px; }
.footer { text-align: center; padding: 32px 20px; background: #2c3e50; color: #bdc3c7; font-size: 0.88rem; margin-top: 40px; }
.footer a { color: #bdc3c7; text-decoration: none; }
.footer a:hover { color: white; }
@media (max-width: 600px) { .header h1 { font-size: 1.5rem; } .form-grid { grid-template-columns: 1fr; } .result-grid { grid-template-columns: 1fr; } .card { padding: 20px 16px; } }