/* Small Business Institute — Custom Styles */

/* Base */
html {
    scroll-behavior: smooth;
}

body {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    font-family: 'Archivo', Verdana, sans-serif;
}

main {
    display: flex;
    flex-direction: column;
    flex: 1;
}

/* Custom Properties */
:root {
    --sbi-navy: #142c70;
    --sbi-navy-dark: #12204f;
    --sbi-sky: #5bb8e8;
    --sbi-sky-dark: #3aa8d8;
    --sbi-sky-tint: #e8f4fb;
    --sbi-white: #ffffff;
    --sbi-light: #f8faff;
    --sbi-text: #495057;
    --sbi-border: #dee2e6;
    --sbi-footer-muted: rgba(255, 255, 255, 0.55);
    --sbi-transition: 0.2s ease-in-out;
    --sbi-radius-sm: 0.25rem;
    --sbi-radius: 0.5rem;
    --sbi-radius-lg: 0.75rem;
    --sbi-radius-pill: 62.5rem;
}

/* Skip Link */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 9999;
    background: var(--sbi-navy);
    color: var(--sbi-white);
    padding: 0.5rem 1.25rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 var(--sbi-radius-sm) 0;
}

.skip-link:focus {
    left: 0;
    outline: 0.1875rem solid var(--sbi-sky);
    outline-offset: 0;
    color: var(--sbi-white);
}

/* Focus Visibility */
*:focus-visible {
    outline: 0.1875rem solid var(--sbi-sky);
    outline-offset: 0.125rem;
}

/* Site Header */
.site-header {
    background-color: var(--sbi-navy);
    padding: 0.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.2);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    vertical-align: top;
    text-decoration: none;
    color: var(--sbi-white);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
    transition: opacity var(--sbi-transition);
}

.site-brand:hover,
.site-brand:focus {
    color: var(--sbi-white);
    opacity: 0.85;
    text-decoration: none;
}

.site-brand__logo {
    height: 3.5rem;
    width: auto;
    display: block;
}

.nav-toggle {
    background: none;
    border: none;
    color: var(--sbi-white);
    font-size: 1.5rem;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    line-height: 1;
    flex-shrink: 0;
    transition: opacity var(--sbi-transition);
}

.nav-toggle:hover {
    opacity: 0.8;
}

.nav-toggle:focus-visible {
    opacity: 0.8;
    outline: 0.1875rem solid var(--sbi-sky);
    outline-offset: 0.125rem;
}

/* Site Nav (Offcanvas) */
.site-nav {
    background-color: var(--sbi-navy-dark);
    width: 18.75rem;
    max-width: 85vw;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.site-nav__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.625rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.site-nav__header .site-brand__logo {
    height: 3rem;
}

.nav-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.65);
    font-size: 1.4rem;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    line-height: 1;
    flex-shrink: 0;
    transition: color var(--sbi-transition);
}

.nav-close:hover {
    color: var(--sbi-white);
}

.nav-close:focus-visible {
    color: var(--sbi-white);
    outline: 0.1875rem solid var(--sbi-sky);
    outline-offset: 0.125rem;
}

.site-nav__body {
    padding: 0.75rem 0;
    overflow-y: auto;
    flex: 1;
}

.site-nav__list {
    margin: 0;
}

.site-nav__link {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    border-left: 0.1875rem solid transparent;
    transition: background-color var(--sbi-transition), color var(--sbi-transition), border-color var(--sbi-transition);
}

.site-nav__link:hover,
.site-nav__link:focus {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--sbi-white);
    border-left-color: var(--sbi-sky);
    text-decoration: none;
}

.site-nav__link.active {
    color: var(--sbi-white);
    border-left-color: var(--sbi-sky);
    background-color: rgba(91, 184, 232, 0.1);
}

.site-nav__link i {
    width: 1.25rem;
    text-align: center;
    color: var(--sbi-sky);
    font-size: 0.95rem;
    flex-shrink: 0;
}

/* Sections */
.site-section {
    padding: 4.5rem 0;
}

[id].site-section {
    scroll-margin-top: 4.5rem;
}

.section--navy {
    background-color: var(--sbi-navy);
    color: var(--sbi-white);
}

.section--navy p {
    color: rgba(255, 255, 255, 0.85);
}

.section--white {
    background-color: var(--sbi-white);
}

.section--light {
    background-color: var(--sbi-light);
}

.section--sky-tint {
    background-color: var(--sbi-sky-tint);
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sbi-navy);
}

.section--navy .section-label {
    color: var(--sbi-sky);
}

.section-title {
    font-family: 'Archivo Black', Verdana, sans-serif;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
    color: var(--sbi-navy);
}

.section--navy .section-title {
    color: var(--sbi-white);
}

/* Scroll Reveal */
.scroll-reveal {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.scroll-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Home Hero */
.home-hero {
    padding: 5rem 0 4.5rem;
}

.hero-fill {
    flex: 1;
    display: flex;
    align-items: center;
}

.home-hero__logo {
    width: 100%;
    max-width: 21.25rem;
    height: auto;
    margin-bottom: 4.5rem;
    animation: hero-entry 0.5s ease-out 0.1s both;
}

.home-hero__title {
    font-family: 'Archivo Black', Verdana, sans-serif;
    font-size: clamp(1.4rem, 3.2vw, 2.25rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--sbi-white);
    margin-bottom: 1.25rem;
    animation: hero-entry 0.5s ease-out 0.25s both;
}

.home-hero__tagline {
    color: rgba(255, 255, 255, 0.8);
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    font-weight: 500;
    line-height: 1.6;
    margin-bottom: 2.25rem;
    animation: hero-entry 0.5s ease-out 0.4s both;
}

@keyframes hero-entry {
    from {
        opacity: 0;
        transform: translateY(0.875rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Strand Cards */
.strand-card {
    display: flex;
    flex-direction: column;
    background-color: var(--sbi-white);
    border: 1px solid var(--sbi-border);
    border-radius: var(--sbi-radius-lg);
    padding: 2rem 1.5rem;
    height: 100%;
    text-decoration: none;
    color: inherit;
    transition: box-shadow var(--sbi-transition), transform var(--sbi-transition);
}

.strand-card:hover,
.strand-card:focus {
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.09);
    transform: translateY(-0.1875rem);
    text-decoration: none;
    color: inherit;
}

.strand-card__icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--sbi-radius);
    background-color: var(--sbi-navy);
    color: var(--sbi-sky);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 1.25rem;
    flex-shrink: 0;
}

.strand-card__title {
    font-family: 'Archivo Black', Verdana, sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--sbi-navy);
    margin-bottom: 0.625rem;
}

.strand-card__body {
    font-size: 0.95rem;
    color: var(--sbi-text);
    line-height: 1.65;
    flex: 1;
}

.strand-card__cta {
    margin-top: 1.25rem;
    color: var(--sbi-navy);
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

/* Page Hero (inner pages) */
.page-hero {
    background-color: var(--sbi-navy);
    color: var(--sbi-white);
    padding: 3.5rem 0 3rem;
}

.page-hero__label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sbi-sky);
    margin-bottom: 0.75rem;
}

.page-hero__title {
    font-family: 'Archivo Black', Verdana, sans-serif;
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    color: var(--sbi-white);
}

.page-hero__lead {
    font-size: 1.1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
    max-width: 42.5rem;
    margin-bottom: 0;
}

/* Partners */
.partners-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 2.5rem;
    align-items: center;
    justify-content: center;
    list-style: none;
    padding: 0;
    margin: 0;
}

.partner-logo {
    height: 3.25rem;
    width: auto;
    object-fit: contain;
    display: block;
}

.sponsor-logo {
    height: 6.5rem;
    width: auto;
    object-fit: contain;
    display: block;
    border-radius: var(--sbi-radius-lg);
}

/* Section Photos */
.section-photo {
    width: 100%;
    aspect-ratio: 3 / 2;
    object-fit: cover;
}

.section-photo-wrap {
    position: relative;
    display: block;
    border-radius: 0.375rem;
    overflow: hidden;
    cursor: zoom-in;
}

.section-photo-wrap picture {
    display: block;
}

.section-photo-wrap .section-photo {
    border-radius: 0;
    transition: transform 0.35s ease;
    display: block;
}

.section-photo-wrap:hover .section-photo,
.section-photo-wrap:focus-visible .section-photo {
    transform: scale(1.04);
}

.section-photo-zoom {
    position: absolute;
    bottom: 0.75rem;
    right: 0.75rem;
    width: 2.25rem;
    height: 2.25rem;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sbi-white);
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.25s ease;
    pointer-events: none;
}

.section-photo-wrap:hover .section-photo-zoom,
.section-photo-wrap:focus-visible .section-photo-zoom {
    opacity: 1;
}

/* Lightbox */
.sbi-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.sbi-lightbox.is-open {
    opacity: 1;
    pointer-events: auto;
}

.sbi-lightbox__img {
    max-width: 100%;
    max-height: 90dvh;
    object-fit: contain;
    border-radius: var(--sbi-radius-sm);
    display: block;
    user-select: none;
}

.sbi-lightbox__close,
.sbi-lightbox__nav {
    position: absolute;
    width: 2.75rem;
    height: 2.75rem;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: 50%;
    color: var(--sbi-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--sbi-transition);
    z-index: 1;
}

.sbi-lightbox__close:hover,
.sbi-lightbox__close:focus-visible,
.sbi-lightbox__nav:hover,
.sbi-lightbox__nav:focus-visible {
    background: rgba(255, 255, 255, 0.3);
    outline: none;
}

.sbi-lightbox__close {
    top: 1rem;
    right: 1rem;
    font-size: 1.1rem;
}

.sbi-lightbox__nav {
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
}

.sbi-lightbox__prev { left: 1rem; }
.sbi-lightbox__next { right: 1rem; }

/* Topic Pills */
.topic-pill {
    display: inline-block;
    background-color: var(--sbi-light);
    border: 1px solid var(--sbi-border);
    border-radius: var(--sbi-radius-pill);
    padding: 0.375rem 0.875rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sbi-navy);
    margin: 0.2rem;
}

/* Buttons */
.btn-sbi-primary,
.btn-sbi-navy,
.btn-sbi-outline-white {
    display: inline-block;
    font-weight: 700;
    font-size: 1rem;
    border: 0.125rem solid transparent;
    padding: 0.75rem 2rem;
    border-radius: var(--sbi-radius-sm);
    text-decoration: none;
    transition: background-color var(--sbi-transition), border-color var(--sbi-transition), color var(--sbi-transition);
}

.btn-sbi-primary:hover, .btn-sbi-primary:focus,
.btn-sbi-navy:hover, .btn-sbi-navy:focus,
.btn-sbi-outline-white:hover, .btn-sbi-outline-white:focus {
    text-decoration: none;
}

.btn-sbi-primary {
    background-color: var(--sbi-sky);
    color: var(--sbi-navy);
    border-color: var(--sbi-sky);
}

.btn-sbi-primary:hover,
.btn-sbi-primary:focus {
    background-color: var(--sbi-sky-dark);
    border-color: var(--sbi-sky-dark);
    color: var(--sbi-navy);
}

.btn-sbi-navy {
    background-color: var(--sbi-navy);
    color: var(--sbi-white);
    border-color: var(--sbi-navy);
}

.btn-sbi-navy:hover,
.btn-sbi-navy:focus {
    background-color: var(--sbi-navy-dark);
    border-color: var(--sbi-navy-dark);
    color: var(--sbi-white);
}

.btn-sbi-outline-white {
    background-color: transparent;
    color: var(--sbi-white);
    border-color: rgba(255, 255, 255, 0.7);
}

.btn-sbi-outline-white:hover,
.btn-sbi-outline-white:focus {
    background-color: var(--sbi-white);
    border-color: var(--sbi-white);
    color: var(--sbi-navy);
}

/* Icon Colour Utility */
.icon-sbi {
    color: var(--sbi-sky);
}

/* Video Cards */
.video-card {
    background: var(--sbi-white);
    border: 1px solid var(--sbi-border);
    border-radius: var(--sbi-radius-lg);
    overflow: hidden;
}

.video-card__title {
    padding: 0.875rem 1rem 1rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--sbi-navy);
    margin: 0;
}

/* Report Cards */
.report-card {
    display: block;
    text-decoration: none;
    color: inherit;
}

.report-card__cover {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--sbi-radius);
    box-shadow: 0 0.125rem 0.5rem rgba(0, 0, 0, 0.12);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

a.report-card:hover .report-card__cover,
a.report-card:focus .report-card__cover {
    transform: translateY(-0.25rem);
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.2);
}

.report-card__title {
    display: block;
    margin-top: 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sbi-navy);
    line-height: 1.4;
}

a.report-card:hover .report-card__title,
a.report-card:focus .report-card__title {
    text-decoration: underline;
    text-underline-offset: 0.125rem;
}

/* Paper Links */
.paper-link {
    color: var(--sbi-navy);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 0.125rem;
    text-decoration-color: transparent;
    transition: text-decoration-color var(--sbi-transition);
}

.paper-link:hover,
.paper-link:focus {
    color: var(--sbi-navy);
    text-decoration-color: var(--sbi-navy);
}

/* Coming Soon */
.coming-soon-note {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--sbi-light);
    border: 1px solid var(--sbi-border);
    border-radius: var(--sbi-radius-pill);
    padding: 0.45rem 1.1rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--sbi-navy);
}

/* Site Footer */
.site-footer {
    background-color: var(--sbi-navy);
    color: var(--sbi-white);
    padding: 2rem 0;
}

.site-footer .fw-semibold {
    color: var(--sbi-white);
}

.footer-muted {
    color: var(--sbi-footer-muted);
}

.footer-link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color var(--sbi-transition);
}

.footer-link:hover,
.footer-link:focus {
    color: var(--sbi-sky);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 575.98px) {
    .home-hero {
        padding: 3rem 0;
    }

    .home-hero__logo {
        max-width: 15rem;
        margin-bottom: 2.5rem;
    }

    .site-section {
        padding: 3rem 0;
    }

    .page-hero {
        padding: 2.5rem 0 2rem;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .home-hero__logo,
    .home-hero__title,
    .home-hero__tagline {
        animation: none;
    }

    .section-photo-wrap .section-photo,
    .sbi-lightbox,
    .scroll-reveal {
        transition: none;
    }

    .scroll-reveal {
        opacity: 1;
        transform: none;
    }
}

/* Print */
@media print {
    .site-header,
    .site-nav,
    .skip-link {
        display: none;
    }

    body,
    main {
        display: block;
        min-height: 0;
    }
}