/* ============================================================
   BAY BRIDGE MARINE
   China-Facing Bataan Information Site
   Shared Site Stylesheet
   ============================================================ */


/* ============================================================
   GOOGLE FONTS
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');


/* ============================================================
   RESET
   ============================================================ */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;

    background: var(--bg-body);
    color: var(--text-primary);

    font-family:
        "Inter",
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Arial,
        sans-serif;

    line-height: 1.6;

    transition:
        background var(--transition),
        color var(--transition);
}


/* ============================================================
   GLOBAL TYPOGRAPHY
   ============================================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family:
        Georgia,
        "Times New Roman",
        serif;
    font-weight: 500;
    letter-spacing: -0.02em;
}

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

a {
    color: inherit;
}

button,
input,
textarea,
select {
    font: inherit;
}


/* ============================================================
   THEME VARIABLES
   ============================================================ */

:root {

    /* DARK THEME */

    --bg-body: #0b0d10;
    --bg-card: #13171d;
    --bg-tertiary: #1a1f27;
    --bg-header: rgba(11, 13, 16, 0.97);
    --bg-mobile-nav: #0b0d10;
    --bg-footer: #080a0d;
    --bg-section-dark: #0e1116;

    --text-primary: #f5f7fa;
    --text-secondary: #aeb6c2;
    --text-muted: #7f8997;

    --accent: #d6a84f;
    --accent-hover: #e5bd68;

    --border-color: #272d36;

    --container-width: 1180px;

    --transition: 0.25s ease;
}


/* ============================================================
   LIGHT THEME
   ============================================================ */

html[data-theme="light"] {

    --bg-body: #f5f5f2;
    --bg-card: #ffffff;
    --bg-tertiary: #ecece8;
    --bg-header: rgba(255, 255, 255, 0.97);
    --bg-mobile-nav: #ffffff;
    --bg-footer: #e9e9e5;

    /* IMPORTANT:
       Former dark homepage sections now follow the theme. */
    --bg-section-dark: #eeeeea;

    --text-primary: #17191c;
    --text-secondary: #555d66;
    --text-muted: #747b83;

    --accent: #b4872f;
    --accent-hover: #9d7426;

    --border-color: #d9d9d4;
}


/* ============================================================
   CONTAINER
   ============================================================ */

.container {
    width: min(
        calc(100% - 40px),
        var(--container-width)
    );

    margin: 0 auto;
}


/* ============================================================
   HEADER
   ============================================================ */

header {
    position: relative;
    z-index: 1000;

    background: var(--bg-header);

    border-bottom:
        1px solid var(--border-color);

    transition:
        background var(--transition),
        border-color var(--transition);
}

.header-inner {
    min-height: 82px;

    display: flex;
    align-items: center;

    gap: 30px;
}


/* ============================================================
   LOGO
   ============================================================ */

.logo {
    flex-shrink: 0;
}

.logo a {
    display: block;
    text-decoration: none;
}

.logo img {
    width: auto;
    height: 52px;
    object-fit: contain;
}


/* ============================================================
   NAVIGATION
   ============================================================ */

nav {
    margin-left: auto;

    display: flex;
    align-items: center;

    gap: 6px;
}

nav a {
    display: inline-flex;
    align-items: center;

    padding: 9px 12px;

    color: var(--text-secondary);

    text-decoration: none;

    font-size: 14px;
    font-weight: 600;

    border-radius: 6px;

    transition:
        color var(--transition),
        background var(--transition);
}

nav a:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

nav a.active {
    color: var(--accent);
}


/* ============================================================
   LANGUAGE + THEME CONTROLS
   ============================================================ */

.language-switch {
    display: flex;
    align-items: center;

    gap: 4px;

    margin-left: 8px;
    padding-left: 14px;

    border-left:
        1px solid var(--border-color);
}

.language-switch button,
.theme-toggle {
    border: 0;

    background: transparent;

    color: var(--text-muted);

    padding: 7px 8px;

    border-radius: 5px;

    cursor: pointer;

    font-size: 13px;
    font-weight: 600;

    transition:
        color var(--transition),
        background var(--transition);
}

.language-switch button:hover,
.theme-toggle:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.language-switch button.active,
.theme-toggle.active {
    color: var(--accent);
}

.theme-toggle {
    margin-left: 2px;

    padding-left: 10px;

    border-left:
        1px solid var(--border-color);

    border-radius: 0;
}


/* ============================================================
   MOBILE BUTTON
   ============================================================ */

.mobile-toggle {
    display: none;

    margin-left: auto;

    width: 42px;
    height: 42px;

    border:
        1px solid var(--border-color);

    border-radius: 6px;

    background: var(--bg-card);

    cursor: pointer;

    padding: 9px;
}

.mobile-toggle span {
    display: block;

    width: 100%;
    height: 2px;

    margin: 5px 0;

    background: var(--text-primary);

    transition: var(--transition);
}


/* ============================================================
   BUTTONS
   ============================================================ */

.btn-primary,
.btn-secondary {
    display: inline-flex;

    align-items: center;
    justify-content: center;

    min-height: 46px;

    padding: 0 22px;

    border-radius: 6px;

    text-decoration: none;

    font-size: 14px;
    font-weight: 700;

    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        transform var(--transition);
}

.btn-primary {
    background: var(--accent);
    color: #111111;

    border:
        1px solid var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);

    border-color:
        var(--accent-hover);

    transform:
        translateY(-2px);
}

.btn-secondary {
    background: transparent;

    color: var(--text-primary);

    border:
        1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}


/* ============================================================
   COMMON PAGE ELEMENTS
   ============================================================ */

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

.bg-dark {
    background: var(--bg-section-dark);
}

main {
    min-height: 60vh;
}


/* ============================================================
   ACCENT LABELS — shared across all pages
   ADDED: gold colour on section labels and eyebrows
   ============================================================ */

.section-label,
.eyebrow {
    color: var(--accent);
}


/* ============================================================
   FORM ELEMENTS
   ============================================================ */

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;

    margin-bottom: 7px;

    color: var(--text-primary);

    font-size: 14px;
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;

    padding: 12px 14px;

    border:
        1px solid var(--border-color);

    border-radius: 6px;

    background: var(--bg-card);

    color: var(--text-primary);

    outline: none;

    transition:
        border-color var(--transition),
        background var(--transition),
        color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}


/* ============================================================
   FOOTER
   ============================================================ */

footer {
    background: var(--bg-footer);

    border-top:
        1px solid var(--border-color);

    padding: 60px 0 25px;

    transition:
        background var(--transition),
        border-color var(--transition);
}

.footer-grid {
    display: grid;

    grid-template-columns:
        2fr 1fr 1fr 1fr;

    gap: 45px;

    margin-bottom: 45px;
}

.footer-brand p {
    max-width: 360px;

    color: var(--text-secondary);

    font-size: 14px;

    line-height: 1.7;

    margin: 18px 0 0;
}

.footer-logo {
    height: 46px;
    width: auto;
}

.footer-col h4 {
    margin: 0 0 16px;

    color: var(--text-primary);

    font-size: 15px;
}

.footer-col ul {
    list-style: none;

    padding: 0;
    margin: 0;
}

.footer-col li {
    margin-bottom: 9px;
}

.footer-col a {
    color: var(--text-secondary);

    text-decoration: none;

    font-size: 14px;

    transition:
        color var(--transition);
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding-top: 22px;

    border-top:
        1px solid var(--border-color);

    display: flex;

    justify-content: space-between;

    gap: 20px;

    color: var(--text-muted);

    font-size: 12px;
}

.footer-bottom p {
    margin: 0;
}


/* ============================================================
   HOMEPAGE — HERO
   ============================================================ */

.hero {
    position: relative;

    min-height: 620px;

    display: flex;
    align-items: center;

    padding: 110px 0;

    background-image:
        linear-gradient(
            rgba(11, 13, 16, 0.68),
            rgba(11, 13, 16, 0.82)
        ),
        url('/images/index/a-mariveles-bay-five-fingers-viewpoint-bataan.png');

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-content {
    max-width: 820px;
}

.hero h1 {
    margin: 0 0 18px;

    color: #ffffff;

    font-size:
        clamp(38px, 5vw, 62px);

    line-height: 1.12;

    font-weight: 500;
}

.hero h2 {
    margin: 0 0 22px;

    color: var(--accent);

    font-size:
        clamp(22px, 3vw, 30px);

    line-height: 1.3;

    font-weight: 500;
}

.hero p {
    max-width: 680px;

    margin: 0 0 32px;

    color: #d4d9e0;

    font-size: 18px;

    line-height: 1.75;
}


/* ============================================================
   HOMEPAGE — GENERAL SECTIONS
   ============================================================ */

.home-section {
    padding: 85px 0;

    background: var(--bg-body);

    border-top:
        1px solid var(--border-color);

    transition:
        background var(--transition),
        border-color var(--transition);
}

.home-section.dark {
    background: var(--bg-section-dark);
}

.section-heading {
    max-width: 760px;

    margin-bottom: 45px;
}

.section-heading.center {
    margin-left: auto;
    margin-right: auto;

    text-align: center;
}

.section-heading h2 {
    margin: 0 0 14px;

    color: var(--text-primary);

    font-size:
        clamp(30px, 4vw, 40px);

    line-height: 1.25;
}

.section-heading p {
    margin: 0;

    color: var(--text-secondary);

    font-size: 17px;

    line-height: 1.7;
}


/* ============================================================
   HOMEPAGE — TWO COLUMN CONTENT
   ============================================================ */

.home-grid {
    display: grid;

    grid-template-columns:
        1fr 1fr;

    gap: 60px;

    align-items: center;
}

.home-grid.reverse {
    grid-template-columns:
        1fr 1fr;
}

.home-copy h3 {
    margin: 0 0 16px;

    color: var(--accent);

    font-size: 20px;

    line-height: 1.35;
}

.home-copy p {
    margin: 0 0 18px;

    color: var(--text-secondary);

    font-size: 16px;

    line-height: 1.8;
}

.home-copy p:last-child {
    margin-bottom: 0;
}

.home-image img {
    width: 100%;
    height: 410px;

    object-fit: cover;

    border-radius: 14px;

    border:
        1px solid var(--border-color);
}


/* ============================================================
   HOMEPAGE — FEATURE CARDS
   ============================================================ */

.feature-grid {
    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 25px;
}

.feature-card {
    padding: 30px 26px;

    background: var(--bg-card);

    border:
        1px solid var(--border-color);

    border-radius: 12px;

    transition:
        transform var(--transition),
        border-color var(--transition),
        background var(--transition);
}

.feature-card:hover {
    transform:
        translateY(-4px);

    border-color:
        var(--accent);
}

.feature-number {
    display: block;

    margin-bottom: 15px;

    color: var(--accent);

    font-size: 13px;

    font-weight: 700;

    letter-spacing: 0.08em;
}

.feature-card h3 {
    margin: 0 0 12px;

    color: var(--text-primary);

    font-size: 20px;
}

.feature-card p {
    margin: 0;

    color: var(--text-secondary);

    font-size: 15px;

    line-height: 1.7;
}


/* ============================================================
   HOMEPAGE — EXPERIENCE CARDS
   ============================================================ */

.experience-grid {
    display: grid;

    grid-template-columns:
        repeat(2, 1fr);

    gap: 25px;
}

.experience-card {
    position: relative;

    min-height: 300px;

    overflow: hidden;

    border-radius: 14px;

    border:
        1px solid var(--border-color);

    background-size: cover;
    background-position: center;
}

.experience-card::after {
    content: "";

    position: absolute;

    inset: 0;

    background:
        linear-gradient(
            to top,
            rgba(7, 9, 12, 0.94),
            rgba(7, 9, 12, 0.18)
        );
}

.experience-content {
    position: absolute;

    left: 0;
    right: 0;
    bottom: 0;

    z-index: 2;

    padding: 28px;
}

.experience-content h3 {
    margin: 0 0 8px;

    color: #ffffff;

    font-size: 22px;
}

.experience-content p {
    margin: 0;

    color: #d4d9e0;

    font-size: 14px;

    line-height: 1.6;
}


/* ============================================================
   HOMEPAGE — GALLERY
   ============================================================ */

.gallery-main {
    margin-bottom: 14px;
}

.gallery-main img {
    width: 100%;
    height: 520px;

    object-fit: cover;

    border-radius: 14px;

    border:
        1px solid var(--border-color);

    cursor: pointer;

    transition:
        opacity var(--transition),
        transform var(--transition);
}

.gallery-main img:hover {
    opacity: 0.94;
}

.gallery-thumbnails {
    display: grid;

    grid-template-columns:
        repeat(6, 1fr);

    gap: 10px;
}

.gallery-thumb {
    width: 100%;
    height: 105px;

    object-fit: cover;

    border-radius: 8px;

    border:
        2px solid var(--border-color);

    cursor: pointer;

    transition:
        border-color var(--transition),
        transform var(--transition);
}

.gallery-thumb:hover {
    border-color:
        var(--accent);

    transform:
        translateY(-2px);
}

.gallery-thumb.active {
    border-color:
        var(--accent);
}


/* ============================================================
   HOMEPAGE — LIGHTBOX
   ============================================================ */

.lightbox {
    position: fixed;

    inset: 0;

    z-index: 9999;

    display: none;

    align-items: center;
    justify-content: center;

    padding: 30px;

    background:
        rgba(0, 0, 0, 0.94);
}

.lightbox.active {
    display: flex;
}

.lightbox-image {
    max-width: 90vw;
    max-height: 82vh;

    object-fit: contain;

    border-radius: 8px;
}

.lightbox-close {
    position: absolute;

    top: 18px;
    right: 25px;

    width: 44px;
    height: 44px;

    display: flex;
    align-items: center;
    justify-content: center;

    color: #ffffff;

    font-size: 34px;

    font-weight: 300;

    cursor: pointer;
}

.lightbox-button {
    position: absolute;

    top: 50%;

    width: 54px;
    height: 54px;

    display: flex;
    align-items: center;
    justify-content: center;

    transform:
        translateY(-50%);

    border:
        1px solid rgba(255, 255, 255, 0.25);

    border-radius: 50%;

    background:
        rgba(0, 0, 0, 0.45);

    color: #ffffff;

    font-size: 30px;

    cursor: pointer;

    user-select: none;
}

.lightbox-button:hover {
    border-color:
        var(--accent);

    color:
        var(--accent);
}

.lightbox-prev {
    left: 25px;
}

.lightbox-next {
    right: 25px;
}

.lightbox-caption {
    position: absolute;

    left: 50%;
    bottom: 25px;

    transform:
        translateX(-50%);

    width:
        min(90%, 850px);

    padding: 10px 18px;

    text-align: center;

    color: #ffffff;

    font-size: 14px;

    background:
        rgba(0, 0, 0, 0.6);

    border-radius: 6px;
}

.lightbox-counter {
    position: absolute;

    top: 25px;
    left: 25px;

    padding: 5px 12px;

    color: #d4d9e0;

    font-size: 13px;

    background:
        rgba(0, 0, 0, 0.55);

    border-radius: 20px;
}


/* ============================================================
   HOMEPAGE — CTA
   ============================================================ */

.home-cta {
    padding: 90px 0;

    text-align: center;

    background:
        linear-gradient(
            135deg,
            var(--bg-card),
            var(--bg-body)
        );

    border-top:
        1px solid var(--border-color);
}

.home-cta h2 {
    margin: 0 0 12px;

    color: var(--text-primary);

    font-size:
        clamp(30px, 4vw, 42px);
}

.home-cta p {
    max-width: 620px;

    margin: 0 auto 30px;

    color: var(--text-secondary);

    font-size: 16px;

    line-height: 1.7;
}


/* ============================================================
   CHINESE TYPOGRAPHY
   ============================================================ */

html[lang="zh-CN"] body {
    font-family:
        "Noto Sans SC",
        "Microsoft YaHei",
        "PingFang SC",
        "Hiragino Sans GB",
        Arial,
        sans-serif;
}


/* ============================================================
   LANGUAGE VISIBILITY
   ============================================================ */

[data-lang] {
    transition:
        opacity 0.15s ease;
}


/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1050px) {

    .header-inner {
        gap: 15px;
    }

    nav a {
        padding: 8px 8px;
        font-size: 13px;
    }

    .footer-grid {
        grid-template-columns:
            1.5fr 1fr 1fr;
    }
}


@media (max-width: 900px) {

    .hero {
        min-height: 540px;

        padding: 90px 0;
    }

    .home-grid,
    .home-grid.reverse {
        grid-template-columns: 1fr;

        gap: 35px;
    }

    .home-image img {
        height: 340px;
    }

    .feature-grid {
        grid-template-columns:
            1fr 1fr;
    }

    .gallery-thumbnails {
        grid-template-columns:
            repeat(3, 1fr);
    }
}


@media (max-width: 850px) {

    .header-inner {
        min-height: 72px;
    }

    .mobile-toggle {
        display: block;
    }

    nav {
        display: none;

        position: absolute;

        top: 72px;
        left: 0;
        right: 0;

        padding: 15px 20px 20px;

        background:
            var(--bg-mobile-nav);

        border-bottom:
            1px solid var(--border-color);

        flex-direction: column;
        align-items: stretch;

        gap: 2px;
    }

    nav.active {
        display: flex;
    }

    nav a {
        width: 100%;

        padding: 12px;

        justify-content: flex-start;
    }

    .language-switch {
        margin: 8px 0 0;

        padding: 12px 0 0;

        border-left: 0;

        border-top:
            1px solid var(--border-color);

        flex-wrap: wrap;
    }

    .language-switch button {
        padding: 8px 12px;
    }

    .theme-toggle {
        border-left: 0;

        margin-left: 4px;

        padding-left: 12px;
    }

    .footer-grid {
        grid-template-columns:
            1fr 1fr;
    }
}


@media (max-width: 650px) {

    .container {
        width:
            min(
                calc(100% - 28px),
                var(--container-width)
            );
    }

    .logo img {
        height: 44px;
    }

    .hero {
        min-height: 500px;

        padding: 75px 0;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero h2 {
        font-size: 21px;
    }

    .hero p {
        font-size: 16px;
    }

    .home-section {
        padding: 65px 0;
    }

    .feature-grid,
    .experience-grid {
        grid-template-columns: 1fr;
    }

    .home-image img {
        height: 280px;
    }

    .gallery-main img {
        height: 350px;
    }

    .gallery-thumbnails {
        grid-template-columns:
            repeat(3, 1fr);
    }

    .gallery-thumb {
        height: 80px;
    }

    .lightbox {
        padding: 15px;
    }

    .lightbox-image {
        max-width: 96vw;
        max-height: 72vh;
    }

    .lightbox-button {
        width: 42px;
        height: 42px;

        font-size: 24px;
    }

    .lightbox-prev {
        left: 8px;
    }

    .lightbox-next {
        right: 8px;
    }

    .lightbox-caption {
        bottom: 12px;

        font-size: 12px;
    }

    .footer-grid {
        grid-template-columns: 1fr;

        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;

        gap: 8px;
    }
}