/* =========================================
   01. ROOT VARIABLES
========================================= */

:root {
    --navy: #101d2b;
    --gold: #b89558;
    --ivory: #f5f3ee;
    --ink: #18232e;
    --muted: #687482;
    --line: #e5e7eb;
    --white: #fff;
    --max: 1200px;
}

/* =========================================
   02. GLOBAL STYLES
========================================= */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    color: var(--ink);
    line-height: 1.65;
    background: #fff;
}

a {
    color: inherit;
    text-decoration: none;
}

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

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

/* =========================================
   03. TOP BAR
========================================= */

.topbar {
    background: var(--navy);
    color: #dce3e9;
    font-size: 12px;
    padding: 8px 0;
}

.topbar .container {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    flex-wrap: wrap;
}

/* =========================================
   04. HEADER & NAVIGATION
========================================= */

.header {
    background: #fff;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}

.nav {
    min-height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    font-weight: 850;
    font-size: 25px;
    letter-spacing: 2px;
    color: var(--navy);
    line-height: 1;
}

.brand small {
    display: block;
    font-size: 9px;
    letter-spacing: 2.3px;
    color: var(--gold);
    margin-top: 7px;
}

.navlinks {
    display: flex;
    align-items: center;
    gap: 25px;
    font-size: 13px;
    font-weight: 650;
}

.navlinks a:hover {
    color: var(--gold);
}

/* =========================================
   05. BUTTONS
========================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 19px;
    background: var(--gold);
    color: #fff;
    font-size: 12px;
    font-weight: 750;
    letter-spacing: .5px;
    border: 1px solid var(--gold);
    transition: .2s;
}

.btn:hover {
    background: #987644;
    border-color: #987644;
}

.btn.outline {
    background: transparent;
    color: var(--navy);
    border-color: #bdc4ca;
}

.btn.light {
    background: #fff;
    color: var(--navy);
    border-color: #fff;
}

/* =========================================
   06. HERO SECTION
========================================= */

.hero {
    background:
        linear-gradient(
            90deg,
            rgba(10, 22, 34, .92),
            rgba(10, 22, 34, .55)
        ),
        url('imge/Banner\ Page\ Image_thread.png')
        center / cover;

    color: #fff;
    min-height: 570px;
    display: flex;
    align-items: center;
}

.hero-inner {
    max-width: 720px;
    padding: 88px 0;
}

.eyebrow {
    font-size: 11px;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--gold);
    font-weight: 800;
}

.hero h1 {
    font-size: clamp(38px, 5vw, 65px);
    line-height: 1.08;
    letter-spacing: -1.5px;
    margin: 18px 0;
}

.hero p {
    font-size: 17px;
    color: #e1e6eb;
    max-width: 610px;
    margin-bottom: 28px;
}

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* =========================================
   07. COMMON SECTION STYLES
========================================= */

.section {
    padding: 88px 0;
}

.section.soft {
    background: var(--ivory);
}

.section.dark {
    background: var(--navy);
    color: #fff;
}

.section-head {
    max-width: 680px;
    margin-bottom: 38px;
}

.section h2 {
    font-size: clamp(28px, 3.4vw, 43px);
    line-height: 1.16;
    letter-spacing: -.8px;
    margin: 12px 0 16px;
}

.section-head p,
.muted {
    color: var(--muted);
}

.dark .muted,
.dark .section-head p {
    color: #c1cbd4;
}

/* =========================================
   08. PRODUCT GRID
========================================= */

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.product-card {
    background: #fff;
    border: 1px solid var(--line);
    transition: transform .2s, box-shadow .2s;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 35px #17233112;
}

.product-visual {
    height: 220px;
    background: linear-gradient(135deg, #e7e2d8, #faf9f6);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-visual .symbol {
    font-size: 58px;
    color: #a58a58;
    letter-spacing: -5px;
}

.product-body {
    padding: 23px;
}

.product-body h3 {
    font-size: 19px;
    margin: 0 0 8px;
}

.product-body p {
    font-size: 13px;
    color: var(--muted);
    margin: 0 0 16px;
}

.text-link {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .6px;
    color: #92713f;
}

.tag {
    display: inline-block;
    background: #f1eadf;
    color: #826338;
    padding: 5px 9px;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .8px;
    text-transform: uppercase;
}

/* =========================================
   09. ABOUT SECTION
========================================= */

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.image-panel {
    min-height: 420px;
    background: linear-gradient(135deg, #ded6c7, #f6f4ef);
    position: relative;
    overflow: hidden;
}

.image-panel img {
    width: 100%;
    height: 100%;
    min-height: 420px;
    object-fit: cover;
}

.image-note {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: #fff;
    padding: 18px 22px;
    max-width: 240px;
    box-shadow: 0 10px 30px #0001;
}

.image-note strong {
    display: block;
    font-size: 22px;
    color: var(--navy);
}

.checks {
    list-style: none;
    padding: 0;
    margin: 25px 0;
}

.checks li {
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
}

.checks li:before {
    content: '✓';
    color: var(--gold);
    font-weight: 900;
    margin-right: 12px;
}

/* =========================================
   10. QUALITY & STATS SECTION
========================================= */

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid #ffffff2c;
    margin-top: 40px;
    padding-top: 28px;
    gap: 20px;
}

.stat strong {
    font-size: 28px;
    display: block;
    color: var(--gold);
}

.stat span {
    font-size: 12px;
    color: #c6d0d9;
}

/* =========================================
   11. APPLICATIONS SECTION
========================================= */

.applications {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.app {
    padding: 25px;
    background: #fff;
    border: 1px solid var(--line);
    min-height: 140px;
}

.app b {
    display: block;
    margin-bottom: 8px;
}

.app span {
    font-size: 12px;
    color: var(--muted);
}

/* =========================================
   12. CALL TO ACTION SECTION
========================================= */

.cta {
    padding: 55px 0;
    background: var(--gold);
    color: #fff;
}

.cta .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
}

.cta h2 {
    font-size: 32px;
    line-height: 1.2;
    margin: 0 0 8px;
}

.cta p {
    margin: 0;
    color: #fff9;
}

/* =========================================
   13. CONTACT FORM
========================================= */

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.field {
    width: 100%;
    padding: 14px;
    border: 1px solid #d9dee3;
    background: #fff;
    font: inherit;
    font-size: 13px;
}

.field.full {
    grid-column: 1 / -1;
}

textarea.field {
    min-height: 120px;
    resize: vertical;
}

.contact-box {
    background: #fff;
    padding: 30px;
    border: 1px solid var(--line);
}

/* =========================================
   14. FOOTER
========================================= */

.footer {
    background: #0b1520;
    color: #d9e0e7;
    padding: 58px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
    gap: 35px;
}

.footer h4 {
    color: #fff;
    margin-top: 0;
}

.footer p,
.footer li {
    font-size: 12px;
    color: #b6c0ca;
}

.footer ul {
    list-style: none;
    padding: 0;
}

.footer li {
    margin: 8px 0;
}

.copyright {
    border-top: 1px solid #ffffff20;
    margin-top: 38px;
    padding-top: 18px;
    font-size: 11px;
    color: #9aa7b4;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

/* =========================================
   15. MOBILE NAVIGATION
========================================= */

.mobile-toggle {
    display: none;
    background: none;
    border: 1px solid var(--line);
    padding: 8px 12px;
    font-size: 20px;
}

/* =========================================
   16. TABLET RESPONSIVE
   Maximum Width: 900px
========================================= */

@media (max-width: 900px) {

    .navlinks {
        gap: 13px;
    }

    .navlinks a:not(.btn) {
        display: none;
    }

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

    .two-col {
        gap: 32px;
    }

    .applications {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

}

/* =========================================
   17. MOBILE RESPONSIVE
   Maximum Width: 620px
========================================= */

@media (max-width: 620px) {

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

    /* Top Bar */

    .topbar .container {
        justify-content: center;
    }

    /* Header */

    .nav {
        min-height: 70px;
    }

    .navlinks a:not(.btn) {
        display: none;
    }

    .navlinks .btn {
        padding: 10px;
    }

    .brand {
        font-size: 21px;
    }

    /* Hero */

    .hero {
        min-height: 510px;
    }

    .hero-inner {
        padding: 65px 0;
    }

    .hero p {
        font-size: 15px;
    }

    /* Sections */

    .section {
        padding: 60px 0;
    }

    /* Single Column Layout */

    .grid,
    .two-col,
    .stats,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    /* About Image */

    .image-panel,
    .image-panel img {
        min-height: 300px;
    }

    /* Applications */

    .applications {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .app {
        padding: 17px;
    }

    /* CTA */

    .cta .container {
        align-items: flex-start;
        flex-direction: column;
    }

    /* Contact Form */

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

    .field.full {
        grid-column: auto;
    }

    /* Stats */

    .stats {
        gap: 16px;
    }

    .stat {
        border-bottom: 1px solid #ffffff20;
        padding-bottom: 12px;
    }

}