body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #111;
}

.container {
    background: white;
    padding: 40px;
    width: 700px;
    border-radius: 16px;
    box-shadow: 0 25px 60px rgba(0,0,0,0.4);
    text-align: center;
}

h1 {
    margin-bottom: 10px;
}

.subtitle {
    color: #64748b;
    margin-bottom: 30px;
}

.input-section {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
}

input {
    flex: 1;
    padding: 14px;
    border-radius: 10px;
    border: 1px solid #ccc;
    font-size: 16px;
}

button {
    padding: 14px 28px;
    border-radius: 10px;
    border: none;
    background: #2563eb;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background: #1d4ed8;
}

.result-section {
    text-align: left;
    margin-top: 20px;
}

.score-bar {
    margin-bottom: 15px;
}

.bar {
    background: #e5e7eb;
    height: 14px;
    border-radius: 10px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: #2563eb;
}

.recommendations {
    margin-top: 20px;
    background: #f1f5f9;
    padding: 15px;
    border-radius: 10px;
}

.summary-box, .signals, .flags {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
}

.summary-box {
    background: #f1f5f9;
}

.signals {
    background: #dcfce7;
}

.flags {
    background: #fee2e2;
}