/* intro.php — Bus Fleet Software features overview */
:root {
    --bfs-navy: #002b5c;
    --bfs-navy-deep: #001a38;
    --bfs-blue: #0A3D91;
    --bfs-yellow: #ffdd00;
    --bfs-ink: #122033;
    --bfs-muted: #4a5a6e;
    --bfs-paper: #eef2f7;
    --bfs-white: #ffffff;
    --font-display: "Barlow Condensed", "Arial Narrow", Impact, sans-serif;
    --font-body: "Source Sans 3", "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body.intro-page {
    margin: 0;
    color: var(--bfs-ink);
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.5;
    background: var(--bfs-white);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* —— Hero —— */
.intro-hero {
    position: relative;
    min-height: auto;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    overflow: hidden;
    color: var(--bfs-ink);
    background: var(--bfs-white);
    border-bottom: 3px solid var(--bfs-navy);
}

.intro-hero-media {
    display: none;
}

.intro-hero-shot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.intro-hero-veil {
    display: none;
}

.intro-hero-inner {
    position: relative;
    z-index: 1;
    width: min(900px, 92vw);
    margin: 0 auto;
    padding: 20px 0 36px;
    text-align: center;
    animation: intro-rise 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.intro-logo {
    width: min(384px, 88vw);
    max-width: none;
    height: auto;
    margin: 0 auto 10px;
}

.intro-brand {
    margin: 0 0 8px;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(1.45rem, 3.5vw, 1.95rem);
    letter-spacing: 0.08em;
    color: var(--bfs-navy);
    text-transform: uppercase;
    line-height: 1;
}

.intro-headline {
    margin: 0 0 14px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.9rem, 4.5vw, 2.85rem);
    line-height: 1.05;
    letter-spacing: 0.02em;
    color: var(--bfs-navy);
}

.intro-lead {
    margin: 0 auto 24px;
    max-width: 38em;
    font-size: 1.05rem;
    color: var(--bfs-muted);
}

.intro-cta-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.intro-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 20px;
    border: 2px solid var(--bfs-navy);
    border-radius: 6px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.02rem;
    letter-spacing: 0.06em;
    text-decoration: none;
    text-transform: uppercase;
    transition: background 0.2s ease, color 0.2s ease;
}

.intro-btn-primary {
    background: transparent;
    color: var(--bfs-navy);
    border-color: var(--bfs-navy);
}

.intro-btn-primary:hover {
    background: rgba(0, 43, 92, 0.06);
    border-color: var(--bfs-navy);
    color: var(--bfs-navy);
}

.intro-btn-secondary {
    background: transparent;
    color: var(--bfs-navy);
}

.intro-btn-secondary:hover {
    background: rgba(0, 43, 92, 0.06);
}

.intro-btn-ghost {
    background: transparent;
    color: var(--bfs-navy);
    border-color: var(--bfs-navy);
}

.intro-btn-ghost:hover {
    background: rgba(0, 43, 92, 0.06);
    color: var(--bfs-navy);
}

/* —— Overview —— */
.intro-overview {
    padding: clamp(36px, 6vw, 64px) 0;
    background: var(--bfs-white);
    border-bottom: 3px solid var(--bfs-navy);
}

.intro-overview-inner {
    width: min(1100px, 92vw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: clamp(24px, 4vw, 48px);
    align-items: center;
}

.intro-overview-shot img {
    width: 100%;
    border: 3px solid var(--bfs-navy);
}

.intro-shot-open {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: zoom-in;
    line-height: 0;
}

.intro-shot-open:focus-visible {
    outline: 3px solid var(--bfs-blue);
    outline-offset: 3px;
}

.intro-shot-hint {
    margin: 8px 0 0;
    font-size: 0.88rem;
    color: var(--bfs-muted);
    text-align: center;
}

body.intro-lightbox-open {
    overflow: hidden;
}

.intro-lightbox {
    position: fixed;
    inset: 0;
    z-index: 4000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
    background: rgba(0, 26, 56, 0.72);
    box-sizing: border-box;
}

.intro-lightbox[hidden] {
    display: none !important;
}

.intro-lightbox-panel {
    width: min(1100px, 100%);
    max-height: 100%;
    background: #fff;
    border: 3px solid var(--bfs-navy);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.intro-lightbox-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border-bottom: 2px solid var(--bfs-navy);
    flex-shrink: 0;
}

.intro-lightbox-title {
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--bfs-navy);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.intro-lightbox-close {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    border: 2px solid var(--bfs-navy);
    border-radius: 6px;
    background: transparent;
    color: var(--bfs-navy);
    font-size: 1.35rem;
    line-height: 1;
    cursor: pointer;
}

.intro-lightbox-close:hover {
    background: rgba(0, 43, 92, 0.06);
}

.intro-lightbox-body {
    overflow: auto;
    padding: 12px;
    background: #f4f6fa;
    flex: 1 1 auto;
    -webkit-overflow-scrolling: touch;
}

.intro-lightbox-body img {
    display: block;
    width: 100%;
    height: auto;
    max-height: none;
    border: 1px solid rgba(0, 43, 92, 0.2);
}

.intro-lightbox-actions {
    display: flex;
    justify-content: center;
    padding: 12px;
    border-top: 1px solid rgba(0, 43, 92, 0.12);
    flex-shrink: 0;
}

.intro-lightbox-actions .intro-btn {
    min-width: 140px;
}

.intro-h2 {
    margin: 0 0 12px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.7rem, 3.5vw, 2.2rem);
    line-height: 1.1;
    color: var(--bfs-navy);
}

.intro-copy {
    margin: 0;
    max-width: 40em;
    color: var(--bfs-muted);
    font-size: 1.05rem;
}

/* —— Feature grid —— */
.intro-features {
    padding: clamp(36px, 6vw, 72px) 0;
    background: var(--bfs-white);
}

.intro-features-inner {
    width: min(1100px, 92vw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}

.intro-feature-block {
    background: var(--bfs-white);
    border: 1px solid rgba(0, 43, 92, 0.12);
    border-left: 4px solid var(--bfs-navy);
    padding: 18px 20px 20px;
}

.intro-feature-title {
    margin: 0 0 10px;
    padding: 0 0 8px;
    background: transparent;
    color: var(--bfs-navy);
    border-bottom: 2px solid var(--bfs-navy);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.intro-feature-list {
    margin: 0;
    padding: 0 0 0 1.15em;
    color: var(--bfs-ink);
    font-size: 0.96rem;
}

.intro-feature-list li {
    margin-bottom: 0.4em;
}

.intro-feature-list li:last-child {
    margin-bottom: 0;
}

/* —— Close —— */
.intro-close {
    padding: clamp(40px, 6vw, 64px) 0;
    background: var(--bfs-white);
    border-top: 1px solid rgba(0, 43, 92, 0.12);
    text-align: center;
}

.intro-close-inner {
    width: min(680px, 92vw);
    margin: 0 auto;
}

.intro-close .intro-copy {
    margin: 0 auto 24px;
}

.intro-close .intro-cta-row {
    justify-content: center;
}

.intro-footer {
    background: var(--bfs-white);
    color: var(--bfs-navy);
    text-align: center;
    padding: 20px 16px;
    font-size: 0.88rem;
    letter-spacing: 0.03em;
    border-top: 1px solid rgba(0, 43, 92, 0.12);
}

.intro-footer p {
    margin: 0;
}

.intro-footer-phone {
    margin-top: 8px !important;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.intro-footer-phone a {
    color: var(--bfs-navy);
    text-decoration: none;
}

.intro-footer-phone a:hover {
    text-decoration: underline;
    color: var(--bfs-blue);
}

[data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: none;
}

@keyframes intro-rise {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 860px) {
    body.intro-page {
        font-size: 16px;
    }

    .intro-hero-inner {
        width: min(900px, 100%);
        padding: 16px 16px 28px;
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }

    .intro-logo {
        width: min(240px, 70vw);
    }

    .intro-brand {
        font-size: clamp(1.2rem, 5.5vw, 1.55rem);
        letter-spacing: 0.06em;
    }

    .intro-headline {
        font-size: clamp(1.55rem, 6.5vw, 2.1rem);
        line-height: 1.12;
    }

    .intro-lead,
    .intro-copy {
        font-size: 1rem;
        padding: 0 2px;
    }

    .intro-cta-row {
        flex-direction: column;
        align-items: stretch;
        width: min(320px, 100%);
        margin-left: auto;
        margin-right: auto;
        gap: 10px;
    }

    .intro-btn {
        width: 100%;
        min-height: 48px;
    }

    .intro-overview,
    .intro-features,
    .intro-close {
        padding: 28px 0;
    }

    .intro-overview-inner,
    .intro-features-inner,
    .intro-close-inner {
        width: min(1100px, 100%);
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
        box-sizing: border-box;
    }

    .intro-overview-inner,
    .intro-features-inner {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .intro-feature-block {
        padding: 14px 14px 16px;
    }

    .intro-feature-list {
        font-size: 0.94rem;
        padding-left: 1.05em;
    }

    .intro-footer {
        padding: 18px max(16px, env(safe-area-inset-left)) max(18px, env(safe-area-inset-bottom));
        padding-right: max(16px, env(safe-area-inset-right));
    }

    .intro-footer-phone {
        font-size: 1.15rem;
    }

    .intro-footer-phone a {
        display: inline-block;
        padding: 8px 4px;
        min-height: 44px;
        line-height: 28px;
    }
}

@media (max-width: 400px) {
    .intro-logo {
        width: min(200px, 78vw);
    }

    .intro-feature-title {
        font-size: 1.02rem;
    }
}

@media (min-width: 861px) {
    .intro-hero-inner {
        padding: 28px 0 40px;
    }

    .intro-cta-row {
        gap: 14px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .intro-hero-inner,
    [data-reveal] {
        animation: none !important;
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}