:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --safe: #16a34a;
    --risk: #f59e0b;
    --danger: #dc2626;
}

* {
    box-sizing: border-box;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    margin: 0;
    padding: 24px;
    background: linear-gradient(135deg, #eef2ff, #f8fafc);
    color: var(--text);
}

/* Layout */
.container {
    max-width: 460px;
    margin: auto;
}

/* Header */
h1 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 4px;
}

.subtitle {
    text-align: center;
    color: var(--muted);
    margin-bottom: 24px;
}

/* Card */
.card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
    margin-bottom: 20px;
}

/* Inputs */
label {
    display: block;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 16px;
}

input {
    width: 100%;
    margin-top: 6px;
    padding: 12px 14px;
    font-size: 15px;
    border-radius: 10px;
    border: 1px solid #e5e7eb;
    outline: none;
    transition: border 0.2s, box-shadow 0.2s;
}

input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* Button */
button {
    width: 100%;
    margin-top: 10px;
    padding: 14px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.35);
}

/* Results */
.results {
    background: var(--card-bg);
    padding: 22px;
    border-radius: 16px;
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.08);
}

.results p {
    margin: 10px 0;
    font-size: 15px;
    line-height: 1.4;
}

/* Status Colors */
.safe {
    color: var(--safe);
    font-weight: 600;
}

.risk {
    color: var(--risk);
    font-weight: 600;
}

.danger {
    color: var(--danger);
    font-weight: 600;
}

/* Utility */
.hidden {
    display: none;
}