/* ============================================================
   Air Serbia Virtual — Flight Crew Center
   Base styles ported from the approved static design
   (design reference: doc/design/website/). Tailwind handles
   utility classes; this file holds the non-utility layer.
   ============================================================ */

:root { color-scheme: dark; }

html { scroll-behavior: smooth; }

body {
    background:
        radial-gradient(1200px 600px at 80% -10%, rgba(37, 99, 214, 0.18), transparent 60%),
        radial-gradient(900px 500px at 0% 0%, rgba(216, 32, 63, 0.10), transparent 55%),
        #06122a;
}

/* Frosted card */
.panel {
    background: linear-gradient(180deg, rgba(20, 48, 87, 0.55), rgba(10, 28, 56, 0.55));
    border: 1px solid rgba(157, 177, 210, 0.14);
    backdrop-filter: blur(10px);
}

/* Opaque card */
.panel-solid {
    background: linear-gradient(180deg, #0e2649, #0a1d3a);
    border: 1px solid rgba(157, 177, 210, 0.12);
}

.hairline { border-color: rgba(157, 177, 210, 0.12); }

/* Top nav tabs: active = white text + royal→crimson underline */
.tab-btn { position: relative; white-space: nowrap; }
.tab-btn.active, .tab-btn[aria-selected="true"] { color: #fff; }
.tab-btn.active::after, .tab-btn[aria-selected="true"]::after {
    content: "";
    position: absolute;
    left: 12px; right: 12px; bottom: -1px; height: 2px;
    background: linear-gradient(90deg, #2563d6, #d8203f);
    border-radius: 2px;
}

.stat-num { font-variant-numeric: tabular-nums; }

/* Faint blueprint grid overlay for hero sections */
.grid-overlay {
    background-image:
        linear-gradient(rgba(157, 177, 210, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(157, 177, 210, 0.05) 1px, transparent 1px);
    background-size: 38px 38px;
}

/* Page transition */
@media (prefers-reduced-motion: no-preference) {
    .page-fade { animation: fade .35s ease; }
}
@keyframes fade {
    from { transform: translateY(8px); opacity: 0.6; }
    to   { transform: none; opacity: 1; }
}

/* Forms (Blazor validation, restyled to brand) */
h1:focus { outline: none; }
.valid.modified:not([type=checkbox]) { outline: 1px solid #34d399; }
.invalid { outline: 1px solid #ef3a57; }
.validation-message { color: #ef3a57; }

/* Blazor error UI (kept from template, restyled to brand) */
#blazor-error-ui {
    background: #0e2649;
    color: #f4f7fb;
    border-top: 2px solid #d8203f;
    bottom: 0;
    box-shadow: 0 -1px 8px rgba(0, 0, 0, 0.4);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}