:root {
    --color-blue-100: oklch(93.2% .032 255.585);
    --color-blue-600: #0078d4;
    --color-blue-800: #1e40af;
    --color-white: #ffffff;
    --color-blue-50: #f0f9ff;
    --color-blue-200: #bfdbfe;
    --color-blue-700: #1d4ed8;
    --color-blue-900: #1e3a8a;
}

body {
    font-family: Inter, system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, var(--color-blue-600), var(--color-blue-800));
    color: var(--color-blue-900);
    min-height: 100vh;
    padding: clamp(16px, 3vw, 32px);
}

.certificate {
    background: var(--color-white);
    border: 2px solid var(--color-blue-200);
    box-shadow: 0 20px 60px rgba(30, 64, 175, 0.25), 0 8px 16px rgba(0, 120, 212, 0.15), inset 0 0 0 1px rgba(30, 64, 175, 0.05);
}

.foil-corner {
    background: conic-gradient(from 210deg, var(--color-blue-600), var(--color-blue-700), #fff0 65%);
    opacity: 0.08;
    mix-blend-mode: multiply;
}

.watermark-text {
    color: var(--color-blue-100);
    opacity: 0.06;
}

.title {
    font-family: Inter, system-ui, -apple-system, sans-serif;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-600), var(--color-blue-700));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: none;
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--color-blue-700);
    font-weight: 500;
}

.recipient-name {
    font-family: "Allura", cursive;
    color: var(--color-blue-900);
    text-shadow: none;
    font-weight: 400;
}

.panel {
    background: linear-gradient(180deg, rgba(0, 120, 212, 0.03), rgba(30, 64, 175, 0.02));
    border: 1px solid rgba(0, 120, 212, 0.15);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.08), inset 0 0 0 1px rgba(0, 120, 212, 0.05);
}

.course {
    color: var(--color-blue-800);
    font-weight: 500;
}

.course-name {
    color: var(--color-blue-900);
    font-weight: 700;
}

.desc {
    color: var(--color-blue-700);
    font-weight: 400;
}

.meta .item {
    background: linear-gradient(180deg, rgba(0, 120, 212, 0.04), rgba(30, 64, 175, 0.02));
    border: 1px solid rgba(0, 120, 212, 0.2);
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.06);
}

.meta .k {
    color: var(--color-blue-700);
    font-weight: 700;
}

.meta .v {
    color: var(--color-blue-900);
    font-weight: 700;
}

.sig-handwrite {
    font-family: "Allura", cursive;
    color: var(--color-blue-900);
    opacity: 1;
    filter: none;
}

.sig-line {
    background: linear-gradient(90deg, transparent, var(--color-blue-600), transparent);
    height: 2px;
}

.sig-label {
    color: var(--color-blue-700);
    font-weight: 600;
}

.seal {
    border: 3px solid var(--color-blue-600);
    background: radial-gradient(circle at 30% 30%, var(--color-blue-50), var(--color-blue-100));
    color: var(--color-blue-900);
    box-shadow: 0 8px 24px rgba(0, 120, 212, 0.25), inset 0 0 0 4px rgba(255, 255, 255, 0.5);
}

    .seal .seal-top,
    .seal .seal-mid,
    .seal .seal-year {
        opacity: 1;
    }

.toolbar {
    max-width: 1123px;
}

.header {
    display: flex;
    justify-content: center;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    justify-content: center;
}

    .brand .flex {
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 12px;
    }

        .brand .flex > div:last-child {
            display: flex;
            flex-direction: column;
            justify-content: center;
            line-height: 1.2;
        }

            .brand .flex > div:last-child h1 {
                margin: 0;
                padding: 0;
                line-height: 1.2;
            }

            .brand .flex > div:last-child p {
                margin: 0;
                padding: 0;
                line-height: 1.2;
            }

.btn {
    font-family: Inter, system-ui, -apple-system, sans-serif;
    background: var(--color-white);
    color: var(--color-blue-700);
    border: 1px solid var(--color-blue-300);
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.1);
}

    .btn:hover {
        background: var(--color-blue-50);
        border-color: var(--color-blue-600);
        box-shadow: 0 4px 16px rgba(0, 120, 212, 0.2);
    }

.btn-primary {
    background: linear-gradient(135deg, var(--color-blue-600), var(--color-blue-700));
    color: var(--color-white);
    border: none;
    text-shadow: none;
    font-weight: 700;
}

    .btn-primary:hover {
        background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-800));
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 120, 212, 0.3);
    }

.ribbon {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--color-blue-200);
    color: var(--color-blue-700);
    box-shadow: 0 2px 8px rgba(30, 64, 175, 0.1);
    font-weight: 600;
}

.copyright {
    color: var(--color-blue-50);
    font-weight: 500;
}

.img-logo {
    filter: none;
    margin-top: 0px !important;
}

.img-logo-50 {
    filter: none;
    margin-top: 0px !important;
    width: 50% !important;
}

.text-white {
    color: white !important;
}

.course-name {
    font-weight: bold;
}

@media print {
    body {
        background: var(--color-white);
    }

    .certificate {
        border: 2px solid var(--color-blue-200);
    }

    .title {
        color: var(--color-blue-800);
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .recipient-name,
    .sig-handwrite {
        color: var(--color-blue-900);
    }

    .meta .item {
        border-color: var(--color-blue-200);
    }

    .seal {
        border-color: var(--color-blue-600);
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}

@media (max-width: 900px) {
    body {
        padding: clamp(12px, 2vw, 20px);
    }
}

@media (max-width: 520px) {
    .watermark-text {
        opacity: 0.04;
    }

    .foil-corner {
        opacity: 0.05;
    }
}