/* ============================================================
   TTE – Transsion Tecno Electronics | Main Stylesheet
   Colors taken from the TTE logo: cyan #00A0E0 and blue #203090
   ============================================================ */

:root {
    --brand: #203090;
    --brand-bright: #00a0e0;
    --brand-dark: #16256b;
    --brand-soft: #e8eefb;
    --brand-on-dark: #7ecff5;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16px;
    color: #333;
    background: #fff;
    line-height: 1.7;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand); }
a:focus-visible,
button:focus-visible,
.js-zoom:focus-visible,
.nav-toggle:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
}
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- Utility ---------- */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--brand-bright);
    margin-top: 8px;
    border-radius: 2px;
}
.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 40px;
}
.btn {
    display: inline-block;
    padding: 12px 28px;
    background: var(--brand);
    color: #fff;
    border-radius: 4px;
    font-weight: 600;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
}
.btn:hover { background: var(--brand-dark); color: #fff; }
.btn-outline {
    background: transparent;
    border: 2px solid var(--brand);
    color: var(--brand);
}
.btn-outline:hover { background: var(--brand); color: #fff; }

/* ---------- HEADER ---------- */
#site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #fff;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.site-logo img { height: 55px; width: auto; }

/* NAV */
.main-nav ul {
    display: flex;
    align-items: center;
    gap: 8px;
}
.main-nav ul li { position: relative; }
.main-nav ul li a {
    display: block;
    padding: 8px 14px;
    font-weight: 600;
    font-size: 0.9rem;
    color: #1a1a2e;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.main-nav ul li a:hover,
.main-nav ul li a.active { color: var(--brand); background: var(--brand-soft); }

/* Dropdown */
.main-nav .dropdown { position: relative; }
.main-nav .dropdown > a::after { content: ' ▾'; font-size: 0.7rem; }
.main-nav .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 170px;
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    border-top: 3px solid var(--brand);
    z-index: 200;
}
.main-nav .dropdown-menu li a {
    padding: 10px 18px;
    font-size: 0.85rem;
    border-radius: 0;
    white-space: nowrap;
}
.main-nav .dropdown:hover .dropdown-menu { display: block; }

/* Hamburger */
.nav-toggle {
    display: none;
    position: relative;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    border-radius: 12px;
    background: var(--brand-soft);
    cursor: pointer;
}
.nav-toggle span {
    position: absolute;
    left: 12px;
    width: 20px;
    height: 2px;
    background: var(--brand);
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.2s ease, top 0.25s ease;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle.open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

.submenu-toggle,
.nav-foot { display: none; }

/* ---------- PAGE HERO (inner pages) ---------- */
.page-hero {
    background: linear-gradient(135deg, #0e1630 0%, #1a4f98 100%);
    padding: 70px 20px;
    text-align: center;
    color: #fff;
}
.page-hero h1 { font-size: 2.6rem; font-weight: 800; margin-bottom: 10px; }
.page-hero p  { font-size: 1.1rem; opacity: 0.85; }

/* ---------- HOME – HERO BANNER ---------- */
.home-hero {
    background: linear-gradient(135deg, #0c1428 0%, #15244a 55%, #0c6eab 100%);
    color: #fff;
    padding: 100px 20px 80px;
    display: flex;
    align-items: center;
}
.home-hero .container { display: flex; align-items: center; gap: 60px; flex-wrap: wrap; }
.hero-text { flex: 1 1 420px; }
.hero-text .badge {
    display: inline-block;
    background: rgba(0,160,224,0.22);
    color: var(--brand-on-dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}
.hero-text h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}
.hero-text h1 span { color: var(--brand-bright); }
.home-hero .btn-outline { border-color: #fff; color: #fff; }
.home-hero .btn-outline:hover { background: #fff; color: var(--brand); }
.hero-text p { font-size: 1.1rem; opacity: 0.85; margin-bottom: 32px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-image { flex: 1 1 320px; text-align: center; }
.hero-image img {
    width: 100%;
    max-height: 420px;
    object-fit: cover;
    margin: 0 auto;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.35);
}

/* ---------- HOME – STATS BAR ---------- */
.stats-bar {
    background: #1a1a2e;
    color: #fff;
    padding: 36px 20px;
}
.stats-bar .container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}
.stat-item { text-align: center; }
.stat-item .number { font-size: 2.4rem; font-weight: 800; color: var(--brand-bright); }
.stat-item .label  { font-size: 0.85rem; opacity: 0.7; text-transform: uppercase; letter-spacing: 1px; margin-top: 4px; }

/* ---------- HOME – CEO MESSAGE ---------- */
.ceo-section {
    padding: 90px 20px;
    background: #fff;
}
.ceo-section .container { display: flex; gap: 60px; align-items: flex-start; flex-wrap: wrap; }
.ceo-text { flex: 1 1 500px; }
.ceo-text blockquote {
    font-size: 1.5rem;
    font-style: italic;
    color: #1a1a2e;
    border-left: 5px solid var(--brand);
    padding-left: 24px;
    margin: 24px 0;
    line-height: 1.6;
}
.ceo-goals { margin-top: 24px; }
.ceo-goals li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 14px;
    font-size: 0.98rem;
}
.ceo-goals li .goal-num {
    min-width: 32px;
    height: 32px;
    background: var(--brand);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}
.ceo-aside { flex: 0 0 300px; }
.ceo-aside .vision-card, .ceo-aside .mission-card {
    background: #f8f8f8;
    border-left: 4px solid var(--brand);
    padding: 28px 24px;
    border-radius: 8px;
    margin-bottom: 20px;
}
.ceo-aside .vision-card h3, .ceo-aside .mission-card h3 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--brand);
    margin-bottom: 12px;
}

/* ---------- HOME – PARTNERS ---------- */
.partners-section {
    padding: 70px 20px;
    background: #f4f4f4;
    text-align: center;
}
.partners-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
    flex-wrap: wrap;
    margin-top: 40px;
}
.partner-item img {
    height: 55px;
    width: auto;
    mix-blend-mode: multiply;
    filter: grayscale(100%);
    opacity: 0.75;
    transition: all 0.3s;
}
.partner-item img:hover { filter: grayscale(0%); opacity: 1; }

/* ---------- ABOUT ---------- */
.about-intro {
    padding: 90px 20px;
    background: #fff;
}
.about-intro .container { display: flex; gap: 60px; align-items: center; flex-wrap: wrap; }
.about-text { flex: 1 1 500px; }
.about-text p { margin-bottom: 18px; color: #555; }
.about-highlights {
    flex: 0 0 300px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.highlight-card {
    background: #1a1a2e;
    color: #fff;
    padding: 28px 24px;
    border-radius: 10px;
    text-align: center;
}
.highlight-card .big-num { font-size: 2.4rem; font-weight: 800; color: var(--brand-bright); }
.highlight-card .desc    { font-size: 0.85rem; opacity: 0.75; margin-top: 6px; }

.values-section {
    padding: 80px 20px;
    background: #f4f4f4;
}
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}
.value-card {
    background: #fff;
    border-radius: 10px;
    padding: 36px 28px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.07);
    border-top: 4px solid var(--brand);
    transition: transform 0.3s, box-shadow 0.3s;
}
.value-card:hover { transform: translateY(-6px); box-shadow: 0 12px 30px rgba(0,0,0,0.12); }
.value-card .icon { font-size: 2.4rem; margin-bottom: 18px; }
.value-card h3 { font-size: 1.2rem; color: #1a1a2e; margin-bottom: 14px; }
.value-card p  { color: #666; font-size: 0.95rem; }

/* ---------- CERTIFICATIONS ---------- */
.cert-section {
    padding: 90px 20px;
    background: #fff;
}
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 40px;
    margin-top: 50px;
}
.cert-card {
    text-align: center;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}
.cert-card:hover { transform: translateY(-6px); }
.cert-card img {
    width: 100%;
    height: 460px;
    object-fit: contain;
    background: #f7f7f8;
    cursor: zoom-in;
}
.cert-card .cert-info span {
    display: block;
    margin-top: 8px;
    font-size: 0.78rem;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    color: var(--brand-on-dark);
}
.cert-card .cert-info {
    padding: 22px 20px;
    background: #1a1a2e;
    color: #fff;
}
.cert-card .cert-info h3 { font-size: 1rem; color: var(--brand-bright); margin-bottom: 6px; }
.cert-card .cert-info p  { font-size: 0.85rem; opacity: 0.75; }

/* ---------- MEDIA ---------- */
.media-section {
    padding: 80px 20px;
    background: #fff;
}
.media-section.alt { background: #f4f4f4; }
.brand-mark {
    height: 42px;
    width: auto;
    margin-bottom: 14px;
    mix-blend-mode: multiply;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 36px;
}
.gallery-item {
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    cursor: pointer;
    position: relative;
}
.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}
.gallery-item:hover img { transform: scale(1.07); }
.gallery-item .overlay {
    position: absolute;
    inset: 0;
    background: rgba(32,48,144,0.62);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}
.gallery-item:hover .overlay { opacity: 1; }
.gallery-item .overlay span { color: #fff; font-size: 2rem; }

.phones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 24px;
    margin-top: 36px;
}
.phone-card {
    background: #fff;
    border-radius: 10px;
    padding: 20px 16px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0,0,0,0.07);
    transition: transform 0.3s;
}
.phone-card:hover { transform: translateY(-5px); }
.phone-card img { height: 220px; width: 100%; margin: 0 auto 12px; object-fit: contain; cursor: zoom-in; }
.phone-card p { font-size: 0.85rem; color: #555; font-weight: 600; }

/* ---------- REPORTS ---------- */
.reports-section {
    padding: 90px 20px;
    background: #fff;
}
.reports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
    margin-top: 50px;
}
.report-card {
    background: #fff;
    border-radius: 10px;
    border: 1px solid #eee;
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}
.report-card:hover { transform: translateY(-5px); box-shadow: 0 12px 30px rgba(0,0,0,0.1); }
.report-card .report-icon { color: var(--brand); }
.report-card .report-icon svg { width: 42px; height: 42px; display: block; }
.report-card h3 { font-size: 1.2rem; color: #1a1a2e; }
.report-card p  { font-size: 0.9rem; color: #666; flex: 1; }
.report-card .btn { align-self: flex-start; font-size: 0.85rem; padding: 10px 20px; }

/* ---------- CONTACT ---------- */
.contact-section {
    padding: 90px 20px;
    background: #fff;
}
.contact-section .container { display: flex; gap: 60px; flex-wrap: wrap; }
.contact-info { flex: 1 1 340px; }
.contact-info-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 36px;
}
.contact-info-item .icon-box {
    min-width: 52px;
    height: 52px;
    background: var(--brand);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}
.contact-info-item .info-text h4 { font-size: 1rem; color: #1a1a2e; margin-bottom: 6px; }
.contact-info-item .info-text p  { font-size: 0.9rem; color: #666; line-height: 1.6; }
.contact-info-item .info-text a  { color: var(--brand); }

.contact-map { flex: 1 1 400px; }
.contact-map iframe {
    width: 100%;
    height: 420px;
    border: 0;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* ---------- FOOTER ---------- */
#site-footer {
    background: #1a1a2e;
    color: #ccc;
    padding: 60px 20px 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: 50px;
}
.footer-brand img {
    height: 50px;
    margin-bottom: 20px;
    background: #fff;
    padding: 8px 14px;
    border-radius: 8px;
}
.footer-brand p { font-size: 0.88rem; line-height: 1.8; opacity: 0.7; }

.footer-col h4 {
    color: #fff;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--brand-bright);
    display: inline-block;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
    font-size: 0.88rem;
    opacity: 0.7;
    transition: opacity 0.2s, color 0.2s;
}
.footer-col ul li a:hover { opacity: 1; color: var(--brand-bright); }

.footer-contact-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 16px;
    font-size: 0.88rem;
    opacity: 0.75;
}
.footer-contact-item .fi { color: var(--brand-bright); font-size: 1rem; margin-top: 3px; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.82rem;
    opacity: 0.6;
}

/* After sales partner */
.after-sales { display: flex; align-items: center; gap: 10px; }
.after-sales img {
    height: 40px;
    background: #fff;
    padding: 4px 8px;
    border-radius: 6px;
}

/* ---------- LIGHTBOX ---------- */
.lightbox-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.92);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.lightbox-overlay.active { display: flex; }
.lightbox-overlay img { max-width: 90vw; max-height: 85vh; border-radius: 6px; }
.lightbox-close {
    position: absolute;
    top: 20px;
    right: 28px;
    color: #fff;
    font-size: 2.4rem;
    cursor: pointer;
    line-height: 1;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .home-hero .container { flex-direction: column; text-align: center; }
    .hero-buttons { justify-content: center; }
    .hero-image img { max-height: 280px; }
    .ceo-section .container { flex-direction: column; }
    .ceo-aside { flex: 1 1 auto; width: 100%; }
    .about-intro .container { flex-direction: column; }
    .about-highlights { flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 980px) {
    body.nav-open { overflow: hidden; }
    .nav-toggle { display: block; z-index: 3; }
    .site-logo { position: relative; z-index: 3; }
    .header-inner { position: relative; background: #fff; }
    .header-inner::before {
        content: '';
        position: absolute;
        z-index: 2;
        inset: 0;
        background: #fff;
    }
    #site-header { z-index: 1100; }

    .main-nav {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 1;
        padding: calc(var(--header-offset, 84px) + 16px) 16px 28px;
        background: linear-gradient(180deg, #f7f9fc 0%, #e7f2fb 100%);
        overflow-y: auto;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-12px);
        transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
    }
    .main-nav.open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: none;
    }

    .main-nav > ul {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    .main-nav > ul > li {
        background: #fff;
        border-radius: 16px;
        box-shadow: 0 8px 24px rgba(16, 36, 72, 0.06);
        overflow: hidden;
    }
    .main-nav > ul > li > a {
        padding: 18px 20px;
        border-bottom: 0;
        border-radius: 16px;
        text-transform: none;
        letter-spacing: 0;
        font-size: 1.05rem;
        font-weight: 600;
    }
    .main-nav > ul > li > a:hover,
    .main-nav > ul > li > a.active {
        color: var(--brand);
        background: var(--brand-soft);
        box-shadow: inset 3px 0 0 var(--brand-bright);
    }

    .main-nav .dropdown {
        display: grid;
        grid-template-columns: 1fr auto;
        align-items: center;
    }
    .main-nav .dropdown > a::after { content: none; }
    .main-nav .dropdown:hover .dropdown-menu { display: none; }
    .submenu-toggle {
        display: grid;
        place-items: center;
        width: 40px;
        height: 40px;
        margin-right: 10px;
        border: 0;
        border-radius: 12px;
        background: var(--brand-soft);
        color: var(--brand);
        cursor: pointer;
    }
    .submenu-toggle svg { width: 18px; height: 18px; transition: transform 0.2s ease; }
    .dropdown.open .submenu-toggle { background: var(--brand); color: #fff; }
    .dropdown.open .submenu-toggle svg { transform: rotate(180deg); }

    .main-nav .dropdown-menu {
        display: none;
        position: static;
        grid-column: 1 / -1;
        min-width: 0;
        margin: 0 10px 10px;
        padding: 4px;
        background: #f4f7fb;
        border: 0;
        border-radius: 12px;
        box-shadow: none;
    }
    .main-nav .dropdown.open .dropdown-menu,
    .main-nav .dropdown.open:hover .dropdown-menu { display: block; }
    .main-nav .dropdown-menu li a {
        padding: 12px 14px;
        border-radius: 10px;
        text-transform: none;
        letter-spacing: 0;
        font-size: 0.95rem;
        color: #1a1a2e;
        background: transparent;
    }
    .main-nav .dropdown-menu li a:hover { color: var(--brand); background: #fff; }

    .nav-foot {
        display: flex;
        flex-direction: column;
        gap: 8px;
        margin-top: 22px;
        padding: 16px 18px;
        border-radius: 16px;
        background: var(--brand);
    }
    .nav-foot a {
        color: #fff;
        font-weight: 600;
        font-size: 0.95rem;
    }
    .nav-foot a:hover { color: var(--brand-on-dark); }

    .footer-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero-text h1 { font-size: 2.2rem; }
    .page-hero h1 { font-size: 2rem; }
    .contact-section .container { flex-direction: column; }
}

@media (max-width: 480px) {
    .stats-bar .container { flex-direction: column; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .phones-grid  { grid-template-columns: repeat(2, 1fr); }
}