:root {
            --bg: #f1f5f9;
            --card: #ffffff;
            --line: #dbe3ef;
            --ink: #0f172a;
            --muted: #475569;
            --danger-bg: #fee2e2;
            --danger-ink: #b91c1c;
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: "Manrope", "Segoe UI", Arial, sans-serif;
            background: radial-gradient(circle at top left, #dbeafe 0%, transparent 32%), var(--bg);
            color: var(--ink);
        }

        .page {
            max-width: 560px;
            margin: 34px auto;
            padding: 0 18px;
        }

        .card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 16px 35px rgba(15, 23, 42, 0.08);
        }

        h1 {
            margin: 0 0 8px;
            font-size: 32px;
            letter-spacing: -0.02em;
        }

        .subtitle {
            margin: 0 0 20px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.55;
        }

        .field {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 14px;
        }

        .field label {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 0.02em;
            font-weight: 700;
            color: #334155;
        }

        .field input,
        .field select {
            border: 1px solid #cbd5e1;
            border-radius: 10px;
            padding: 11px 12px;
            font-size: 14px;
            color: #0f172a;
            background: #fff;
        }

        .field input:focus,
        .field select:focus {
            outline: none;
            border-color: #0f766e;
            box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.16);
        }

        .field-error {
            color: #b91c1c;
            font-size: 12px;
            font-weight: 600;
        }

        .field-help {
            color: var(--muted);
            font-size: 12px;
            line-height: 1.4;
        }

        .alert {
            border-radius: 10px;
            padding: 10px 12px;
            font-size: 14px;
            margin-bottom: 14px;
            background: var(--danger-bg);
            color: var(--danger-ink);
            border: 1px solid #fecaca;
        }

        .actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 18px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid #cbd5e1;
            background: #fff;
            color: #1e293b;
            text-decoration: none;
            font-size: 14px;
            font-weight: 700;
            padding: 10px 14px;
            cursor: pointer;
        }

        .btn-primary {
            background: #0f766e;
            border-color: #0f766e;
            color: #fff;
            box-shadow: 0 8px 22px rgba(15, 118, 110, 0.22);
        }

        .btn-primary:hover {
            background: #0b5f59;
            border-color: #0b5f59;
        }