/* ==========================================================================
   Banner Section
   Variants: --dark (default), --light
   Alignment: --left (default), --center
   ========================================================================== */

/* Section wrapper — encapsulates the banner and its optional caption, and
   owns the spacing below the whole unit. Editors override --banner-margin-bottom
   per page; it defaults to 32px. */
.csrc-banner-section {
    margin-bottom: var(--banner-margin-bottom, 32px);
}

/* Base */
.csrc-banner {
    width: 100% !important;
    overflow: hidden;
    margin-bottom: 0 !important;
    max-width: none !important;
    padding: 0 !important;
    margin: 0 !important;
    height: 180px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    will-change: transform;
}

/* ---------- Dark variant ---------- */
.csrc-banner--dark {
    color: #fff;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 3px rgba(0, 0, 0, 0.1);
}

.csrc-banner__bg {
    background: linear-gradient(135deg, rgb(0,85,135) 0%, rgb(0,119,182) 70%, rgb(39,116,174) 100%);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0;
    animation: fadeInBg 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.csrc-banner__bg::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.02) 50%, transparent 100%);
    opacity: 0.6;
}

@keyframes fadeInBg {
    0% { opacity: 0.95; }
    100% { opacity: 1; }
}

.csrc-banner--dark .csrc-banner__title {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.csrc-banner--dark .csrc-banner__desc {
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

/* ---------- Light variant ---------- */
.csrc-banner--light {
    background: #eff0f2;
    color: #000;
}

.csrc-banner--light .csrc-banner__desc {
    /* #555 (via token): passes 4.5:1 even at the ~0.9 rest opacity applied to the
       subtitle. #666 composited to 4.10:1 and failed WCAG 1.4.3 (AA). */
    color: var(--color-text-secondary);
}

.csrc-banner--desc-dark .csrc-banner__desc {
    color: #000;
    animation: descFadeFull 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}

@keyframes descFadeFull {
    0% {
        opacity: 0;
        transform: translateY(8px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- Image variant ----------
   Full-bleed image at an editor-controlled height (--banner-img-height) and
   crop position (--banner-img-pos). The image fills the height and is cropped
   to fit via object-fit. Both custom properties are set inline by the view;
   the fallbacks here preserve the prior default of a 420px-capped banner. */
.csrc-banner--image {
    height: var(--banner-img-height, 420px);
    min-height: 0;
    padding: 0 !important;
    display: block;
}

.csrc-banner__image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: var(--banner-img-pos, center);
}

/* ---------- Image caption ----------
   Sits beneath the image banner, constrained to the page content width so its
   left/center/right alignment lines up with the rest of the page text. */
.csrc-banner__caption {
    width: var(--container-width);
    max-width: var(--container-max-width);
    margin-inline: auto;
    padding-block: 10px 0;
    font-size: 14px;
    line-height: 1.45;
    color: #666;
}

.csrc-banner__caption-inner > :first-child {
    margin-top: 0;
}

.csrc-banner__caption-inner > :last-child {
    margin-bottom: 0;
}

/* Inline-prose links standardized via .csrc-rich-text (content-links.css) */

.csrc-banner__caption--left {
    text-align: left;
}

.csrc-banner__caption--center {
    text-align: center;
}

.csrc-banner__caption--right {
    text-align: right;
}

/* ---------- Alignment ---------- */
.csrc-banner--center .csrc-banner__inner {
    text-align: center;
}

.csrc-banner--center .csrc-banner__desc {
    margin-inline: auto;
}

/* ---------- Content layout ---------- */
.csrc-banner__content {
    width: var(--container-width);
    max-width: var(--container-max-width);
    margin-inline: auto;
    padding: 0;
    position: relative;
    z-index: 3;
}

.csrc-banner__inner {
    max-width: 100%;
    text-align: left;
    opacity: 0;
    margin: 0 auto;
    animation: contentFade 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

@keyframes contentFade {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---------- Typography ---------- */
.csrc-banner__title {
    font-size: clamp(1.75rem, .911rem + 1.751vw, 2.25rem);
    font-weight: 700;
    line-height: 1.125;
    margin: 0;
    opacity: 0;
    transform: translateY(8px);
    animation: titleFade 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
}

@keyframes titleFade {
    0% {
        opacity: 0;
        transform: translateY(8px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.csrc-banner__desc {
    font-size: 16px !important;
    line-height: 1.4;
    font-weight: 400;
    letter-spacing: .011em;
    opacity: 0;
    transform: translateY(8px);
    max-width: 900px;
    animation: descFade 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}

@keyframes descFade {
    0% {
        opacity: 0;
        transform: translateY(8px);
    }
    100% {
        opacity: 0.9;
        transform: translateY(0);
    }
}

/* ---------- Info bar ---------- */
.csrc-banner--has-info {
    height: auto;
    min-height: 180px;
    padding: 2rem 0 !important;
}

.csrc-banner__info {
    display: flex;
    gap: 40px;
    margin-top: 20px;
    opacity: 0;
    animation: descFade 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
}

.csrc-banner__info-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.csrc-banner__info-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    margin-top: 2px;
    opacity: 0.85;
}

.csrc-banner__info-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 1rem;
    line-height: 1.4;
}

@media only screen and (max-width: 734px) {
    .csrc-banner__info {
        flex-direction: column;
        gap: 16px;
    }
}

/* ---------- Read More toggle ---------- */
.csrc-banner--has-toggle {
    height: auto;
    min-height: 180px;
    padding: 2rem 0 !important;
}

/* Collapsed preview. The excerpt is word-limited server-side to ~4 lines; the
   clamp is a safety net for a consistent box. The full description lives in
   .csrc-banner__desc-content (hidden until expanded). */
.csrc-banner__desc-excerpt {
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* The display above outranks the [hidden] UA rule, so restore it explicitly. */
.csrc-banner__desc-excerpt[hidden],
.csrc-banner__desc-content[hidden] {
    display: none;
}

.csrc-banner__desc-content p,
.csrc-banner__desc-excerpt p {
    margin-bottom: 1rem;
    line-height: 1.5;
}

.csrc-banner__desc-content p:last-child,
.csrc-banner__desc-excerpt p:last-child {
    margin-bottom: 0;
}

.csrc-banner__toggle {
    display: inline-flex; /* only rendered server-side when the description is truncated */
    align-items: center;
    gap: 4px;
    margin-top: 12px;
    padding: 6px 16px;
    background: transparent;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: inherit;
    cursor: pointer;
    transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.csrc-banner--center .csrc-banner__toggle {
    margin-inline: auto;
}

.csrc-banner__toggle:hover {
    background-color: var(--color-ucla-blue, #2774AE);
    color: #fff;
    border-color: var(--color-ucla-blue, #2774AE);
}

.csrc-banner__toggle-icon {
    width: 16px;
    height: 16px;
    transition: transform 0.15s ease;
}

.csrc-banner__toggle[aria-expanded="true"] .csrc-banner__toggle-icon {
    transform: rotate(180deg);
}

/* ---------- Dark toggle overrides ---------- */
.csrc-banner--dark .csrc-banner__toggle {
    border-color: rgba(255, 255, 255, 0.3);
    color: #fff;
}

.csrc-banner--dark .csrc-banner__toggle:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
}

/* ---------- Responsive ---------- */
@media only screen and (max-width: 734px) {
    .csrc-banner {
        height: auto;
        min-height: 160px;
        padding: 30px 0 !important;
    }

    .csrc-banner--image,
    .csrc-banner--image .csrc-banner__image {
        min-height: 0;
        max-height: 280px;
        padding: 0 !important;
    }
}

@media only screen and (max-width: 480px) {
    .csrc-banner {
        min-height: 140px;
        padding: 30px 0 !important;
    }

    .csrc-banner--image,
    .csrc-banner--image .csrc-banner__image {
        min-height: 0;
        max-height: 210px;
        padding: 0 !important;
    }
}