/* Biến nội bộ */
.ovu-neo-wrapper {
    --bg-white: #ffffff;
    --border-ink: 3px solid #111111;
    --shadow-solid: 5px 5px 0px #111111;
    --shadow-push: 2px 2px 0px #111111;
    
    /* Bảng màu Sinh học Phụ nữ */
    --clr-period: #ffb3c6;     /* Hồng kinh nguyệt */
    --clr-fertile: #99e2b4;    /* Xanh dễ thụ thai */
    --clr-ovulation: #ffbe0b;  /* Vàng rụng trứng */
    --clr-bg: #f8f9fa;

    max-width: 850px;
    margin: 0 auto;
    font-family: system-ui, -apple-system, sans-serif;
    color: #111111;
    background: var(--clr-bg);
    padding: 20px;
    border: var(--border-ink);
    border-radius: 16px;
    box-shadow: 8px 8px 0px #111;
}

.ovu-neo-wrapper * { box-sizing: border-box; }

/* Header */
.ovu-neo-header { background: #fff; border: var(--border-ink); box-shadow: var(--shadow-solid); padding: 20px; border-radius: 12px; text-align: center; margin-bottom: 25px; }
.ovu-neo-header h2 { margin: 0 0 10px 0; font-size: 1.8rem; font-weight: 900; text-transform: uppercase; color: #111;}
.ovu-neo-header p { margin: 0; font-weight: 800; font-size: 0.95rem; color: #444; }

/* Form Styles */
.ovu-neo-form { display: flex; flex-direction: column; gap: 20px; }
.ovu-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.ovu-group { display: flex; flex-direction: column; gap: 10px; }
.ovu-group label { font-weight: 900; font-size: 1.05rem; color: #111; }

.ovu-neo-wrapper input[type="date"],
.ovu-neo-wrapper input[type="number"] { width: 100%; padding: 14px 15px; font-size: 1.2rem; font-weight: 900; border: var(--border-ink); border-radius: 12px; background: var(--bg-white); box-shadow: 4px 4px 0px #111; outline: none; transition: all 0.2s; color: #111; font-family: inherit;}
.ovu-neo-wrapper input:focus { box-shadow: var(--shadow-solid); background: #e0fbfc; }

/* Quick Tags */
.input-with-quick { display: flex; flex-direction: column; gap: 10px; }
.quick-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.q-tag { padding: 4px 12px; border: 2px solid #111; border-radius: 20px; font-size: 0.85rem; font-weight: 800; cursor: pointer; background: #fff; box-shadow: 2px 2px 0px #111; color: #111; transition: transform 0.1s;}
.q-tag:hover { background: #e9ecef; }
.q-tag:active { box-shadow: 0px 0px 0px #111; transform: translate(2px,2px); }

/* Button */
.ovu-neo-btn { padding: 18px; font-size: 1.2rem; font-weight: 900; background: #111; color: #fff; border: var(--border-ink); border-radius: 12px; box-shadow: 5px 5px 0px #555; cursor: pointer; text-transform: uppercase; transition: all 0.1s; margin-top: 5px; letter-spacing: 1px;}
.ovu-neo-btn:active { box-shadow: 2px 2px 0px #555; transform: translate(3px, 3px); }

/* Results */
.ovu-neo-result { margin-top: 30px; padding-top: 25px; border-top: 4px dashed #111; display: flex; flex-direction: column; gap: 25px;}
.ovu-neo-result.active { display: flex !important; animation: popUp 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards; }

.ovu-summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 15px; }
.ovu-card { border: var(--border-ink); box-shadow: var(--shadow-solid); border-radius: 12px; padding: 20px 15px; text-align: center; display: flex; flex-direction: column; justify-content: center;}
.card-period { background: var(--clr-period); }
.card-ovulation { background: var(--clr-ovulation); }
.card-fertile { background: var(--clr-fertile); }

.ovu-card h4 { margin: 0 0 10px 0; font-size: 1.05rem; color: #111; font-weight: 900; border-bottom: 2px solid #111; padding-bottom: 8px;}
.val-date { font-size: 1.8rem; font-weight: 900; color: #111; line-height: 1.2; margin-bottom: 10px;}
.val-date.text-small { font-size: 1.3rem; }
.val-desc { margin: 0; font-size: 0.9rem; font-weight: 800; color: #222; }

/* BẢNG LỊCH (CALENDAR) NEO-BRUTALISM */
.ovu-calendar-box { background: #fff; border: var(--border-ink); border-radius: 12px; padding: 20px; box-shadow: var(--shadow-solid); }
.cal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; border-bottom: 3px solid #111; padding-bottom: 10px;}
.cal-header h3 { margin: 0; font-size: 1.4rem; font-weight: 900; text-transform: uppercase;}
.cal-btn { background: #111; color: #fff; border: none; padding: 8px 15px; font-weight: 900; font-size: 1rem; border-radius: 8px; cursor: pointer; border: 2px solid #111; transition: all 0.1s;}
.cal-btn:hover { background: #333; }
.cal-btn:active { transform: scale(0.95); }

.cal-legend { display: flex; gap: 15px; flex-wrap: wrap; margin-bottom: 15px; justify-content: center;}
.legend-item { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; font-weight: 800; color: #111;}
.l-box { width: 16px; height: 16px; border: 2px solid #111; border-radius: 4px; }
.bg-period { background: var(--clr-period); }
.bg-fertile { background: var(--clr-fertile); }
.bg-ovulation { background: var(--clr-ovulation); }

.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; text-align: center;}
.cal-day-name { font-weight: 900; font-size: 0.9rem; color: #fff; background: #111; padding: 8px 0; border-radius: 6px; border: 2px solid #111;}
.cal-cell { padding: 10px 0; font-weight: 800; font-size: 1.1rem; border: 2px solid #ccc; border-radius: 8px; transition: all 0.1s; background: #fff; color: #111;}
.cal-cell.empty { background: transparent; border: none; }
.cal-cell:not(.empty):hover { border-color: #111; box-shadow: 2px 2px 0px #111; z-index: 2; position: relative;}

/* Trạng thái ngày trên lịch */
.cal-cell.is-period { background: var(--clr-period); border-color: #111; box-shadow: 2px 2px 0px #111;}
.cal-cell.is-fertile { background: var(--clr-fertile); border-color: #111; box-shadow: 2px 2px 0px #111;}
.cal-cell.is-ovulation { background: var(--clr-ovulation); border-color: #111; box-shadow: 2px 2px 0px #111; font-weight: 900; transform: scale(1.05); z-index: 1;}

.ovu-note-black { background: #fff; border: 3px solid #111; border-radius: 8px; padding: 15px; font-size: 0.95rem; font-weight: 800; color: #111; line-height: 1.6; text-align: left;}
.ovu-note-black strong { color: #d00000; font-weight: 900;}

@keyframes popUp { 0% { opacity: 0; transform: translateY(20px); } 100% { opacity: 1; transform: translateY(0); } }

@media (max-width: 650px) {
    .ovu-form-grid { grid-template-columns: 1fr; }
    .cal-cell { padding: 8px 0; font-size: 0.95rem; }
}