:root {
    --green: #28a745;
    --green-dark: #1e7e34;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* Hero */
.hero-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 220px;
    display: flex;
    align-items: center;
}

.hero-section .hl {
    color: #28a745;
}

/* Drop zone */
.drop-zone {
    background: #fff;
    border: 2.5px dashed #ced4da;
    border-radius: 16px;
    max-width: 620px;
    cursor: pointer;
    transition: border-color .2s, background .2s;
}

.drop-zone.drag-over {
    border-color: var(--green);
    background: #f0fff4;
}

.drop-zone .drop-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #343a40;
}

/* Feature icons */
.feature-icon {
    font-size: 2.5rem;
}

/* Preview table */
#preview-table th {
    background: #28a745;
    color: #fff;
    font-size: .8rem;
}

#preview-table td {
    font-size: .8rem;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* SEO text */
.seo-text h2 {
    font-size: 1.4rem;
    margin-top: 2rem;
    color: #1a1a2e;
}

.seo-text p {
    color: #555;
    line-height: 1.7;
}

/* Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 1.8rem;
    }
    .drop-zone {
        padding: 2rem 1rem !important;
    }
}