/* Biến CSS nội bộ */
.gender-neo-wrapper {
    --bg-white: #ffffff;
    --border-ink: 3px solid #111111;
    --shadow-solid: 5px 5px 0px #111111;
    --shadow-push: 2px 2px 0px #111111;
    
    /* Palette Giới Tính & Khoa học */
    --clr-boy: #a2d2ff;      /* Xanh dương nhạt */
    --clr-girl: #ffc8dd;     /* Hồng nhạt */
    --clr-mixed: #ffd6a5;    /* Cam đào */
    --clr-science: #caffbf;  /* Xanh lá nhạt */
    --clr-warning: #fee440;  /* Vàng nổi bật */

    max-width: 750px;
    margin: 0 auto;
    font-family: system-ui, -apple-system, sans-serif;
    color: #111111;
    background: #fdfdfd;
    padding: 20px;
    border: var(--border-ink);
    border-radius: 16px;
    box-shadow: 8px 8px 0px #111;
}

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

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

/* Form Styles */
.gender-neo-form { display: flex; flex-direction: column; gap: 20px; }
.gender-group { display: flex; flex-direction: column; gap: 10px; }
.gender-group label { font-weight: 900; font-size: 1.1rem; color: #111; }

.gender-neo-wrapper input[type="number"] { width: 100%; padding: 16px; font-size: 1.4rem; 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; }
.gender-neo-wrapper input[type="number"]:focus { box-shadow: var(--shadow-solid); background: var(--clr-mixed); }

/* Chú thích màu đen đậm */
.gender-helper { font-size: 0.95rem; font-weight: 800; color: #111; background: #e9ecef; padding: 12px; border-radius: 8px; border: 2px dashed #111; }

/* Radio Grid */
.gender-radio-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 15px; }
.gender-radio-grid .radio-neo { cursor: pointer; }
.gender-neo-wrapper input[type="radio"] { display: none; }
.gender-neo-wrapper .neo-content { display: flex; align-items: center; justify-content: center; text-align: center; height: 100%; padding: 12px; font-weight: 800; border: var(--border-ink); border-radius: 12px; background: var(--bg-white); box-shadow: 4px 4px 0px #111; transition: all 0.15s; font-size: 1rem; color: #111;}
input[value="girls"]:checked + .neo-content { background: var(--clr-girl); box-shadow: var(--shadow-push); transform: translate(2px, 2px); }
input[value="boys"]:checked + .neo-content { background: var(--clr-boy); box-shadow: var(--shadow-push); transform: translate(2px, 2px); }
input[value="mixed"]:checked + .neo-content { background: var(--clr-mixed); box-shadow: var(--shadow-push); transform: translate(2px, 2px); }

/* Button */
.gender-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 var(--clr-warning); cursor: pointer; text-transform: uppercase; margin-top: 10px; transition: all 0.1s; letter-spacing: 1px;}
.gender-neo-btn:hover { background: #333; }
.gender-neo-btn:active { box-shadow: 2px 2px 0px var(--clr-warning); transform: translate(3px, 3px); }

/* Result Layout */
.gender-neo-result { margin-top: 30px; padding-top: 25px; border-top: 4px dashed #111; display: flex; flex-direction: column; gap: 20px;}
.gender-neo-result.active { display: flex !important; animation: genderPop 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards; }

.gender-card { background: #fff; border: var(--border-ink); box-shadow: var(--shadow-solid); border-radius: 12px; padding: 25px 20px; text-align: center; }
.gender-card h3 { margin: 0 0 15px 0; font-size: 1.3rem; color: #111; font-weight: 900; text-transform: uppercase; border-bottom: 3px solid #111; padding-bottom: 10px;}

/* Card Chuỗi */
.card-streak { background: var(--clr-mixed); }
#res-streak-desc { font-weight: 800; font-size: 1.1rem; color: #111; margin-bottom: 10px;}
.streak-val { font-size: 3.5rem; font-weight: 900; color: #111; line-height: 1; margin-bottom: 15px; text-shadow: 2px 2px 0px #fff;}

/* Card Tiếp Theo */
.card-next { background: #fff; }
.next-desc { font-weight: 800; font-size: 1.1rem; color: #111; margin-bottom: 20px;}
.next-prob-grid { display: flex; gap: 20px; margin-bottom: 25px;}
.prob-box { flex: 1; border: 3px solid #111; border-radius: 12px; padding: 20px; display: flex; flex-direction: column; align-items: center; box-shadow: 4px 4px 0px #111; }
.prob-boy { background: var(--clr-boy); }
.prob-girl { background: var(--clr-girl); }
.p-icon { font-size: 2.5rem; margin-bottom: 5px; }
.p-label { font-weight: 900; font-size: 1.2rem; color: #111; margin-bottom: 5px;}
.p-val { font-size: 2.5rem; font-weight: 900; color: #111; background: #fff; padding: 5px 20px; border-radius: 8px; border: 2px solid #111;}

/* Ghi chú bóc trần sự thật - Cực kỳ dễ đọc */
.gender-note-black { background: #fff; border: 3px solid #111; border-radius: 8px; padding: 15px; font-size: 1rem; font-weight: 800; color: #111; line-height: 1.5; text-align: left;}
.gender-note-black strong { color: #d90429; font-weight: 900; text-transform: uppercase;}

/* Kiến thức khoa học */
.card-science { background: var(--clr-science); text-align: left; }
.card-science .sci-title { text-align: center; margin-bottom: 20px; border-bottom: none;}
.sci-list { margin: 0; padding-left: 20px; font-weight: 800; font-size: 1rem; color: #111; line-height: 1.6; display: flex; flex-direction: column; gap: 15px;}
.sci-list li { border-bottom: 2px dashed #111; padding-bottom: 10px; }
.sci-list li:last-child { border-bottom: none; }

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

@media (max-width: 600px) {
    .gender-radio-grid { grid-template-columns: 1fr; }
    .next-prob-grid { flex-direction: column; }
}