/* ============================================
   banner.css — Banner Slider, Sub-page Banner
   ============================================ */

/* ── Banner Slider (index page) ── */
.banner-slider {
    position: relative;
    width: 100%;
    height: 700px;
    overflow: hidden;
    background: var(--bg-body);
    margin-top: -84px; /* overlap under fixed header */
    padding-top: 0;
    user-select: none;
    -webkit-user-select: none;
}

.banner-slides {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.banner-slides.dragging {
    transition: none;
}

.banner-slide {
    min-width: 100%;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    flex-shrink: 0;
}

/* ── Banner Bottom Edge (glow strip) ── */
.banner-slider::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent 0%, var(--color-primary) 20%, var(--color-accent) 50%, var(--color-primary) 80%, transparent 100%);
    z-index: 10;
    box-shadow: 0 0 20px rgba(0, 188, 212, 0.4), 0 0 60px rgba(0, 188, 212, 0.15);
}

/* ── Banner Dots ── */
.banner-dots {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
    border: 2px solid transparent;
}

.banner-dot:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.15);
}

.banner-dot.active {
    background: var(--color-primary);
    border-color: rgba(0, 188, 212, 0.4);
    transform: scale(1.15);
}

/* ── Sub-page Banner ── */
.banner {
    width: 100%;
    height: 340px;
    background: linear-gradient(135deg, #0A1628 0%, #122536 40%, #0F1923 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-top: -84px; /* overlap under fixed header */
    padding-top: 84px; /* push content below header */
}

.banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent 0%, var(--color-primary) 20%, var(--color-accent) 50%, var(--color-primary) 80%, transparent 100%);
    z-index: 10;
    box-shadow: 0 0 20px rgba(0, 188, 212, 0.4), 0 0 60px rgba(0, 188, 212, 0.15);
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(0, 188, 212, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(0, 188, 212, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.banner-overlay {
    text-align: center;
    z-index: 1;
    padding: 20px;
}

.banner-overlay h1 {
    color: var(--text-heading);
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 10px;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
}

.banner-overlay p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 400;
}