@import url('https://fonts.googleapis.com/css2?family=Bungee&display=swap');

.hidden { display: none !important; }

.payoff-neo-wrapper {
    --bg-pink: #ffb3c6;
    --bg-blue: #c6e2ff;
    --bg-green: #baffc9;
    --bg-yellow: #fdfd96;
    --border-dark: 3px solid #000;
    --shadow-solid: 6px 6px 0px #000;
    
    font-family: system-ui, -apple-system, sans-serif;
    max-width: 950px; margin: 30px auto; background: #fff;
    border: var(--border-dark); border-radius: 16px; box-shadow: 10px 10px 0px #000;
    padding: 30px; box-sizing: border-box; color: #000;
}
.payoff-neo-wrapper * { box-sizing: border-box; }

.payoff-header {
    background: var(--bg-yellow); padding: 20px; border-radius: 12px;
    border: var(--border-dark); box-shadow: var(--shadow-solid); margin-bottom: 25px; text-align: center;
}
.payoff-header h2 { margin: 0 0 10px 0; font-size: 1.8rem; font-weight: 900; text-transform: uppercase; }
.payoff-header p { margin: 0; font-weight: 700; font-size: 1rem; color: #222; }

/* INPUT STYLES */
.payoff-input-section { margin-bottom: 20px; }
.payoff-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.payoff-group { display: flex; flex-direction: column; gap: 8px; }

/* MASTER RULE: Nhãn đen tuyền, font-weight 900 */
.payoff-neo-wrapper label { font-weight: 900; font-size: 1.05rem; color: #000 !important; }

.payoff-input {
    width: 100%; padding: 15px; font-size: 1.2rem; font-weight: 900; font-family: 'Courier New', monospace;
    border: var(--border-dark); border-radius: 8px; outline: none; background: #fff;
    box-shadow: inset 3px 3px 0px rgba(0,0,0,0.05); transition: 0.1s;
}
.payoff-input:focus { border-color: #1982c4; box-shadow: 4px 4px 0px #1982c4; transform: translateY(-2px); }

.input-with-select { display: flex; gap: 10px; }
.payoff-select {
    padding: 15px; font-size: 1.1rem; font-weight: 900; border: var(--border-dark); 
    border-radius: 8px; background: #eee; cursor: pointer;
}

.bg-highlight { background: #f4f4f4; padding: 20px; border: 3px dashed #000; border-radius: 12px; }
.hint-text { font-weight: 700; font-size: 0.9rem; color: #1982c4; margin-top: 5px; }

/* NÚT BẤM & LỖI */
.payoff-btn-calc {
    width: 100%; padding: 18px; font-size: 1.4rem; font-weight: 900; text-transform: uppercase;
    background: #111; color: #fff; border: var(--border-dark); border-radius: 12px;
    box-shadow: 6px 6px 0px #555; cursor: pointer; transition: 0.1s; letter-spacing: 1px;
}
.payoff-btn-calc:active { transform: translate(4px, 4px); box-shadow: 2px 2px 0px #555; }

.payoff-error-box {
    margin-top: 20px; background: #ffadad; color: #900000; border: var(--border-dark);
    padding: 15px; border-radius: 8px; font-weight: 900; font-size: 1.1rem;
    box-shadow: var(--shadow-solid); text-align: center; animation: shake 0.4s ease-in-out;
}
@keyframes shake { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }

/* TỔNG QUAN KẾT QUẢ */
.payoff-result-section { margin-top: 35px; border-top: 4px dashed #000; padding-top: 30px; animation: fadeUp 0.4s ease-out forwards;}
.res-title { font-size: 1.4rem; font-weight: 900; text-align: center; margin: 0 0 20px 0; text-transform: uppercase; border-bottom: 2px solid #000; padding-bottom: 10px;}

.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 30px; }
.summary-card { border: var(--border-dark); border-radius: 12px; padding: 20px; text-align: center; box-shadow: 4px 4px 0px #000; display: flex; flex-direction: column; gap: 10px; }
.summary-card span { font-size: 1rem; font-weight: 900; text-transform: uppercase; }
.summary-card b { font-family: 'Courier New', Courier, monospace; font-size: 1.8rem; font-weight: 900; color: #111; line-height: 1.2; text-shadow: 1px 1px 0px rgba(255,255,255,0.8);}

.bg-pink { background: var(--bg-pink); }
.bg-blue { background: var(--bg-blue); }
.bg-green { background: var(--bg-green); }

/* BẢNG LỊCH TRÌNH TRẢ NỢ */
.payoff-table-wrapper { overflow-y: auto; max-height: 600px; border: var(--border-dark); border-radius: 12px; box-shadow: var(--shadow-solid);}
.payoff-table { width: 100%; border-collapse: collapse; text-align: right; font-size: 1.05rem; font-weight: 700; background: #fff;}
.payoff-table th { position: sticky; top: 0; background: #333; color: #fff; padding: 15px; border-bottom: var(--border-dark); border-right: 2px solid #555; text-transform: uppercase; font-weight: 900; text-align: center; z-index: 10;}
.payoff-table td { padding: 12px 15px; border-bottom: 2px solid #ccc; border-right: 2px solid #ccc; font-family: monospace; font-size: 1.15rem;}
.payoff-table th:last-child, .payoff-table td:last-child { border-right: none; }
.payoff-table tbody tr:nth-child(even) { background: #f9f9f9; }
.payoff-table tbody tr:hover { background: #e0fbfc; }

.col-month { text-align: center !important; font-weight: 900; }
.col-principal { color: #1982c4; font-weight: 900;}
.col-interest { color: #ff595e; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* RESPONSIVE */
@media (max-width: 768px) {
    .payoff-grid, .summary-grid { grid-template-columns: 1fr; }
    .summary-card b { font-size: 1.5rem; }
    .payoff-table td { font-size: 1rem; padding: 10px; }
}