/* Khai báo biến cục bộ vào class cha ngoài cùng */
.sleep-neo-wrapper {
    --bg-white: #ffffff;
    --bg-page: #fbf9ff;
    --border-ink: 3px solid #111111;
    --shadow-solid: 5px 5px 0px #111111;
    --shadow-push: 2px 2px 0px #111111;
    
    /* Palette Giấc Ngủ */
    --clr-sleep-light: #eaddff; /* Tím pastel */
    --clr-sleep-mid: #d0bcf1;   /* Tím đậm hơn chút */
    --clr-sleep-neon: #b286fb;  /* Tím nổi bật cho nút bấm */
    --clr-moon: #ffea75;        /* Vàng nhạt mặt trăng */
    --clr-warning: #ffb4a2;     /* Cam đào cảnh báo thiếu ngủ */
    --clr-good: #a7f3d0;        /* Xanh ngọc mướt cho giờ đẹp nhất */

    max-width: 650px;
    margin: 0 auto;
    font-family: system-ui, -apple-system, sans-serif;
    color: #111111;
    background: var(--bg-page);
    padding: 20px;
    border: var(--border-ink);
    border-radius: 16px;
    box-shadow: 8px 8px 0px #111; /* Đổ bóng to cho cả cụm */
}

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

/* Header */
.sleep-neo-header {
    background: var(--clr-sleep-mid);
    border: var(--border-ink);
    box-shadow: var(--shadow-solid);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 25px;
}
.sleep-neo-header h2 { margin: 0 0 8px 0; font-size: 1.8rem; font-weight: 900; letter-spacing: -0.5px; }
.sleep-neo-header p { margin: 0; font-weight: 500; font-size: 0.95rem; line-height: 1.4; }

/* Form Elements */
.sleep-neo-form { display: flex; flex-direction: column; gap: 20px; }
.sleep-group { display: flex; flex-direction: column; gap: 10px; }
.sleep-group label { font-weight: 800; font-size: 1.05rem; }

.sleep-neo-wrapper input[type="time"] {
    width: 100%;
    padding: 16px;
    font-size: 1.5rem;
    font-weight: 900;
    text-align: center;
    border: var(--border-ink);
    border-radius: 12px;
    background: var(--bg-white);
    box-shadow: 4px 4px 0px #111;
    outline: none;
    transition: all 0.2s;
    cursor: text;
}
.sleep-neo-wrapper input[type="time"]:focus {
    background: var(--clr-moon);
    box-shadow: var(--shadow-solid);
}

/* Radio Nút bấm (Đã biết giờ / Ngủ ngay) */
.sleep-radio-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.sleep-radio-grid .radio-neo { cursor: pointer; }
.sleep-radio-grid input { display: none; }
.sleep-radio-grid .neo-content {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 16px 10px;
    font-weight: 800;
    border: var(--border-ink);
    border-radius: 12px;
    background: var(--bg-white);
    box-shadow: 4px 4px 0px #111;
    transition: all 0.15s;
    text-align: center;
}
.sleep-radio-grid input:checked + .neo-content {
    background: var(--clr-moon);
    box-shadow: var(--shadow-push);
    transform: translate(2px, 2px);
}

/* Info Box */
.sleep-info-alert {
    background: var(--clr-sleep-light);
    border: 2px dashed #111;
    padding: 12px 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    line-height: 1.5;
    font-weight: 500;
    display: flex;
    gap: 10px;
}

/* Submit Button */
.sleep-neo-btn {
    padding: 18px;
    font-size: 1.2rem;
    font-weight: 900;
    background: var(--clr-sleep-neon);
    color: #111;
    border: var(--border-ink);
    border-radius: 12px;
    box-shadow: var(--shadow-solid);
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.1s;
    margin-top: 10px;
}
.sleep-neo-btn:hover { background: #9b6cfa; }
.sleep-neo-btn:active { box-shadow: var(--shadow-push); transform: translate(3px, 3px); }

/* Animation Kết Quả */
.sleep-neo-result {
    margin-top: 30px;
    padding-top: 25px;
    border-top: 4px dotted #111;
}
.sleep-neo-result.active {
    display: block !important;
    animation: sleepPop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.result-title { margin: 0 0 20px 0; font-size: 1.1rem; text-align: center; line-height: 1.5;}

/* Lưới hiển thị các thẻ giờ ngủ */
.cycle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.cycle-card {
    background: var(--bg-white);
    border: var(--border-ink);
    box-shadow: 4px 4px 0px #111;
    border-radius: 12px;
    padding: 15px 10px;
    text-align: center;
    position: relative;
    transition: transform 0.2s;
}
.cycle-card:hover { transform: translateY(-5px); }
.cycle-card .time { font-size: 1.8rem; font-weight: 900; display: block; margin-bottom: 5px;}
.cycle-card .cycles { font-size: 0.85rem; font-weight: 700; color: #444;}
.cycle-card .tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #111;
    color: #fff;
    font-size: 0.7rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 20px;
    white-space: nowrap;
    border: 2px solid #111;
}

/* Các trạng thái thẻ card */
.card-best { background: var(--clr-good); }
.card-good { background: var(--clr-sleep-light); }
.card-bad { background: var(--clr-warning); }
.card-best .tag { background: #fff; color: #111; } /* Đảo màu để nổi bật */

.sleep-note {
    background: #f8f9fa;
    border: 2px solid #111;
    border-radius: 8px;
    padding: 12px;
    font-size: 0.85rem;
}

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

/* Responsive */
@media (max-width: 500px) {
    .sleep-radio-grid { grid-template-columns: 1fr; }
    .cycle-grid { grid-template-columns: 1fr 1fr; }
}