/* ══════════════════════════════════════════════════════════════
   Domain Dropdown & Selection Styles
   Shared by compare and transport pages.
   ══════════════════════════════════════════════════════════════ */

/* ── Domain Selection Layout ────────────────────────────────── */
.domain-selection {
    position: relative;
}

.domain-arrow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    background: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.comparison-preview {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    min-height: 100px;
}

/* ── File Upload UI ─────────────────────────────────────────── */
.file-label {
    cursor: pointer;
    background-color: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
    transition: all 0.2s ease;
}

.file-label:hover {
    border-color: var(--bs-primary);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
    .domain-arrow {
        position: relative;
        margin: 1rem auto;
        transform: rotate(90deg);
    }
}

/* ── Dark Mode ──────────────────────────────────────────────── */
[data-theme="dark"] .comparison-preview {
    background: var(--page-header-bg);
    border: none;
    border-radius: 12px;
}

[data-theme="dark"] .domain-arrow {
    background: var(--bg-elevated);
    border: none;
    box-shadow: var(--shadow-md);
}