/* Biến nội bộ */
.wheel-neo-wrapper {
    --bg-white: #ffffff;
    --border-ink: 4px solid #111111;
    --shadow-solid: 6px 6px 0px #111111;
    --shadow-push: 2px 2px 0px #111111;
    
    --clr-primary: #ff595e;  
    --clr-secondary: #8ac926; 
    --clr-accent: #ffca3a;
    --clr-bg: #f8f9fa;

    max-width: 700px;
    margin: 0 auto;
    font-family: system-ui, -apple-system, sans-serif;
    color: #111111;
    background: var(--clr-bg);
    padding: 25px;
    border: var(--border-ink);
    border-radius: 16px;
    box-shadow: 10px 10px 0px #111;
}

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

.wheel-neo-header { background: var(--clr-accent); color: #111; border: var(--border-ink); box-shadow: var(--shadow-solid); padding: 20px; border-radius: 12px; text-align: center; margin-bottom: 25px; }
.wheel-neo-header h2 { margin: 0 0 10px 0; font-size: 2rem; font-weight: 900; text-transform: uppercase;}
.wheel-neo-header p { margin: 0; font-weight: 800; font-size: 1rem; }

.wheel-controls { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 30px; background: #fff; padding: 20px; border-radius: 12px; border: var(--border-ink); box-shadow: var(--shadow-solid);}
.wheel-group { display: flex; flex-direction: column; gap: 10px; }
.wheel-group label { font-weight: 900; font-size: 1.1rem; color: #111; text-transform: uppercase;}

.wheel-mode-toggle { display: flex; gap: 15px; }
.radio-mode { flex: 1; cursor: pointer; }
.radio-mode input { display: none; }
.radio-mode .neo-content { display: block; text-align: center; padding: 12px; font-weight: 900; border: 3px solid #111; border-radius: 8px; background: #e9ecef; box-shadow: 3px 3px 0px #111; transition: all 0.15s; font-size: 1.05rem;}
.radio-mode input:checked + .neo-content { background: var(--clr-primary); color: #fff; box-shadow: 1px 1px 0px #111; transform: translate(2px, 2px); }

/* Auto-resize Textarea */
.neo-textarea { width: 100%; padding: 15px; font-family: monospace, system-ui; font-size: 1.1rem; font-weight: 800; border: 3px solid #111; border-radius: 8px; background: #fff; resize: none; overflow: hidden; outline: none; line-height: 1.5;}
.neo-textarea:focus { background: #e0fbfc; }

/* Nút bấm ở ngoài */
.wheel-actions-row { display: flex; gap: 10px; margin-top: 5px; flex-wrap: wrap;}
.wheel-neo-btn-primary { flex: 1; min-width: 200px; padding: 12px 20px; font-size: 1.2rem; font-weight: 900; background: var(--clr-primary); color: #fff; border: 3px solid #111; border-radius: 8px; box-shadow: 4px 4px 0px #111; cursor: pointer; text-transform: uppercase; transition: all 0.1s;}
.wheel-neo-btn-primary:active { box-shadow: 1px 1px 0px #111; transform: translate(3px, 3px); }
.wheel-neo-btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: 4px 4px 0px #111; }

.wheel-neo-btn-secondary { padding: 12px 20px; font-size: 1.1rem; font-weight: 900; background: #111; color: #fff; border: 3px solid #111; border-radius: 8px; box-shadow: 4px 4px 0px var(--clr-secondary); cursor: pointer; text-transform: uppercase; transition: all 0.1s;}
.wheel-neo-btn-secondary:active { box-shadow: 1px 1px 0px var(--clr-secondary); transform: translate(3px, 3px); }

/* KHU VỰC VÒNG QUAY */
.wheel-stage { position: relative; display: flex; justify-content: center; align-items: center; padding: 20px 0; margin-top: 10px;}

.wheel-pointer { position: absolute; top: -10px; z-index: 10; font-size: 3.5rem; filter: drop-shadow(0px 5px 0px #111); animation: floatPointer 0.5s infinite alternate; pointer-events: none;}
@keyframes floatPointer { 0% { transform: translateY(0); } 100% { transform: translateY(10px); } }

/* Container giữ nguyên vị trí, không xoay */
.wheel-container { 
    position: relative; 
    width: 100%; 
    max-width: 450px; 
    aspect-ratio: 1/1; 
}

/* Lớp đổ bóng tĩnh (nằm dưới, không bao giờ xoay) */
.wheel-shadow-layer {
    position: absolute;
    top: 8px; left: 8px; /* Offset của shadow */
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: #111;
    z-index: 0;
}

/* Canvas xoay bên trên, không có shadow nữa */
#luckyWheel { 
    position: relative;
    width: 100%; 
    height: 100%; 
    border-radius: 50%; 
    border: 6px solid #111; 
    z-index: 1; /* Nằm trên lớp shadow */
    transition: transform 5s cubic-bezier(0.15, 0.8, 0.2, 1); 
}

/* Nút Spin Icon giữa vòng quay */
.spin-center-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 85px; height: 85px; border-radius: 50%; background: #111; color: #fff; border: 4px solid #fff; font-size: 3rem; display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: 0px 0px 0px 4px #111, 4px 4px 10px rgba(0,0,0,0.5); z-index: 5; transition: transform 0.1s; padding-bottom: 4px;}
.spin-center-btn:active { transform: translate(-50%, -50%) scale(0.9); }
.spin-center-btn:disabled { background: #555; cursor: not-allowed; transform: translate(-50%, -50%); filter: grayscale(1); }

/* Modal Kết quả */
.wheel-neo-result { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0); width: 90%; background: var(--clr-primary); border: var(--border-ink); border-radius: 12px; box-shadow: 15px 15px 0px rgba(0,0,0,0.8); text-align: center; display: flex; flex-direction: column; align-items: center; padding: 30px 20px; z-index: 999; transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); opacity: 0;}
.wheel-neo-result.show { transform: translate(-50%, -50%) scale(1); opacity: 1; }

.wheel-neo-result h3 { margin: 0; font-size: 2rem; font-weight: 900; color: #fff; text-shadow: 2px 2px 0px #111;}
.result-sub { font-weight: 800; font-size: 1.2rem; color: #111; background: #fff; padding: 5px 15px; border-radius: 20px; border: 2px solid #111; margin: 15px 0;}
.winner-box { background: #fff; padding: 20px; border: 4px dashed #111; border-radius: 12px; width: 100%;}
.winner-box .val-text { font-size: 2.2rem; font-weight: 900; color: #111; text-transform: uppercase; word-wrap: break-word;}

@media (max-width: 500px) {
    .wheel-neo-header h2 { font-size: 1.5rem; }
    .wheel-container { max-width: 320px; }
    .wheel-actions-row { flex-direction: column; }
}