:root {
    --primary-navy: #0f2e5a;
    --navy-dark: #091c36;
    --navy-light: #1b498a;
    --accent-gold: #c89d28;
    --accent-cyan: #00a4ba;
    --bg-page: #f0f4f8;
}

body {
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    color: #2d3748;
    background-color: var(--bg-page);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.hero-section {
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--primary-navy) 60%, var(--navy-light) 100%);
    color: #fff;
    padding: 3.5rem 0 4rem;
    position: relative;
    box-shadow: 0 4px 20px rgba(15, 46, 90, 0.15);
}

.hero-section::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 12px;
    background: linear-gradient(90deg, #c89d28, #e5c158, #c89d28);
}

.search-box-card {
    border: none;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    margin-top: -2.5rem;
    position: relative;
    z-index: 10;
    background: #ffffff;
}

.search-input {
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-size: 1.1rem;
    border: 2px solid #e2e8f0;
    transition: all 0.2s ease;
}

.search-input:focus {
    border-color: var(--primary-navy);
    box-shadow: 0 0 0 4px rgba(15, 46, 90, 0.1);
}

.btn-search {
    border-radius: 12px;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    background-color: var(--primary-navy);
    border-color: var(--primary-navy);
    transition: all 0.2s ease;
}

.btn-search:hover {
    background-color: var(--navy-dark);
    border-color: var(--navy-dark);
    transform: translateY(-1px);
}

.cert-card {
    border: none;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    background: #fff;
    transition: transform 0.2s ease;
}

.cert-preview-box {
    background: #1e293b;
    padding: 16px;
    text-align: center;
    border-radius: 12px;
    position: relative;
    box-shadow: inset 0 2px 8px rgba(0,0,0,0.2);
}

.cert-preview-img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
    display: inline-block;
}

.btn-download-pdf {
    background-color: var(--primary-navy);
    color: #fff;
    font-weight: 600;
    padding: 0.85rem 1.75rem;
    border-radius: 10px;
    border: none;
    transition: all 0.2s ease;
}

.btn-download-pdf:hover {
    background-color: var(--navy-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(15, 46, 90, 0.25);
}

.btn-email-cert {
    background-color: #198754;
    color: #fff;
    font-weight: 600;
    padding: 0.85rem 1.75rem;
    border-radius: 10px;
    border: none;
    transition: all 0.2s ease;
}

.btn-email-cert:hover {
    background-color: #157347;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(25, 135, 84, 0.25);
}

.footer {
    background-color: #ffffff;
    border-top: 1px solid #e2e8f0;
}