/* ============================================
   MKS BETON LLC — Main Stylesheet
   Prefix: .mks-
   ============================================ */

:root {
    --mks-bg: #0E1E22;
    --mks-bg-light: #142A30;
    --mks-bg-card: #17303A;
    --mks-accent: #EB6E37;
    --mks-accent-dim: rgba(235, 110, 55, 0.15);
    --mks-accent-glow: rgba(235, 110, 55, 0.35);
    --mks-text: #F0F2F5;
    --mks-text-muted: #94A3AB;
    --mks-text-dim: #5E7078;
    --mks-border: rgba(240, 242, 245, 0.08);
    --mks-font-heading: 'DM Serif Display', serif;
    --mks-font-body: 'Karla', sans-serif;
    --mks-radius: 6px;
    --mks-spacing: 2.4rem;
    --mks-max-width: 1180px;
    --mks-transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---- Reset & Base ---- */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--mks-font-body);
    background-color: var(--mks-bg);
    color: var(--mks-text);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--mks-accent);
    text-decoration: none;
    transition: color var(--mks-transition);
}

a:hover {
    color: #f4956a;
}

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

/* ---- Grain Overlay ---- */

.mks-grain-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
}

/* ---- Container ---- */

.mks-container {
    width: 100%;
    max-width: var(--mks-max-width);
    margin: 0 auto;
    padding: 0 var(--mks-spacing);
}

/* ---- Header & Nav ---- */

.mks-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(14, 30, 34, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--mks-border);
}

.mks-nav {
    max-width: var(--mks-max-width);
    margin: 0 auto;
    padding: 0 var(--mks-spacing);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.mks-logo-link {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--mks-text);
    text-decoration: none;
}

.mks-logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: var(--mks-accent);
    color: var(--mks-bg);
    font-family: var(--mks-font-heading);
    font-size: 1.25rem;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.mks-logo-text {
    font-family: var(--mks-font-heading);
    font-size: 1.15rem;
    letter-spacing: 0.04em;
}

.mks-nav-links {
    display: flex;
    list-style: none;
    gap: 2.2rem;
}

.mks-nav-links a {
    color: var(--mks-text-muted);
    font-size: 0.92rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    transition: color var(--mks-transition);
    position: relative;
}

.mks-nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--mks-accent);
    transition: width var(--mks-transition);
}

.mks-nav-links a:hover {
    color: var(--mks-text);
}

.mks-nav-links a:hover::after {
    width: 100%;
}

/* Mobile Nav Toggle */

.mks-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.mks-nav-bar {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--mks-text);
    border-radius: 2px;
    transition: transform var(--mks-transition), opacity var(--mks-transition);
}

.mks-nav-toggle.mks-active .mks-nav-bar:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}

.mks-nav-toggle.mks-active .mks-nav-bar:nth-child(2) {
    opacity: 0;
}

.mks-nav-toggle.mks-active .mks-nav-bar:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* ---- Hero ---- */

.mks-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px var(--mks-spacing) 80px;
    overflow: hidden;
    background: linear-gradient(165deg, var(--mks-bg) 0%, #0B1518 48%, #112228 100%);
}

.mks-hero-hex-grid {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.mks-hex {
    position: absolute;
    opacity: 0.06;
    border: 2px solid var(--mks-accent);
}

.mks-hex--1 {
    width: 180px; height: 208px;
    top: 8%; left: 5%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: mks-float 18s ease-in-out infinite;
}

.mks-hex--2 {
    width: 120px; height: 139px;
    top: 55%; right: 8%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: mks-float 22s ease-in-out infinite reverse;
    opacity: 0.045;
}

.mks-hex--3 {
    width: 90px; height: 104px;
    bottom: 18%; left: 15%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: mks-float 15s ease-in-out infinite;
}

.mks-hex--4 {
    width: 200px; height: 231px;
    top: 20%; right: 12%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: mks-float 25s ease-in-out infinite;
    opacity: 0.03;
}

.mks-hex--5 {
    width: 60px; height: 69px;
    top: 40%; left: 30%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: mks-float 12s ease-in-out infinite reverse;
    opacity: 0.07;
}

.mks-hex--6 {
    width: 140px; height: 162px;
    bottom: 10%; right: 25%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: mks-float 20s ease-in-out infinite;
    opacity: 0.04;
}

.mks-hex--7 {
    width: 70px; height: 81px;
    top: 70%; left: 60%;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: mks-float 16s ease-in-out infinite reverse;
    opacity: 0.055;
}

@keyframes mks-float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(-12px) rotate(1.5deg); }
    66% { transform: translateY(8px) rotate(-1deg); }
}

.mks-hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.mks-hero-title {
    font-family: var(--mks-font-heading);
    font-size: clamp(3rem, 8vw, 5.5rem);
    line-height: 1.08;
    letter-spacing: 0.06em;
    color: var(--mks-text);
}

.mks-hero-rule {
    width: 80px;
    height: 4px;
    background: var(--mks-accent);
    margin: 1.5rem auto;
}

.mks-hero-tagline {
    font-family: var(--mks-font-heading);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--mks-accent);
    margin-bottom: 1rem;
}

.mks-hero-sub {
    font-size: 1.05rem;
    color: var(--mks-text-muted);
    max-width: 520px;
    margin: 0 auto 2.2rem;
    line-height: 1.7;
}

.mks-hero-scroll-hint {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
}

.mks-scroll-arrow {
    display: block;
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--mks-accent);
    border-bottom: 2px solid var(--mks-accent);
    transform: rotate(45deg);
    animation: mks-bounce 2s ease-in-out infinite;
    opacity: 0.5;
}

@keyframes mks-bounce {
    0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.5; }
    50% { transform: rotate(45deg) translateY(8px); opacity: 1; }
}

/* ---- Buttons ---- */

.mks-btn-primary {
    display: inline-block;
    padding: 0.85rem 2.4rem;
    background: var(--mks-accent);
    color: var(--mks-bg);
    font-family: var(--mks-font-body);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    border: 2px solid var(--mks-accent);
    border-radius: var(--mks-radius);
    cursor: pointer;
    transition: all var(--mks-transition);
}

.mks-btn-primary:hover {
    background: transparent;
    color: var(--mks-accent);
}

/* ---- Divider Strip ---- */

.mks-divider-strip {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 0 var(--mks-spacing);
    max-width: var(--mks-max-width);
    margin: 0 auto;
}

.mks-divider-line {
    flex: 1;
    height: 1px;
    background: var(--mks-border);
}

.mks-divider-accent {
    width: 48px;
    height: 3px;
    background: var(--mks-accent);
}

/* ---- Section Headings ---- */

.mks-section-heading {
    font-family: var(--mks-font-heading);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    text-align: center;
    margin-bottom: 0.6rem;
    letter-spacing: 0.02em;
}

.mks-section-desc {
    text-align: center;
    color: var(--mks-text-muted);
    font-size: 1.05rem;
    max-width: 540px;
    margin: 0 auto 3.5rem;
}

/* ---- Products Section ---- */

.mks-products {
    padding: 6rem 0;
}

.mks-product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.8rem;
}

.mks-product-card {
    position: relative;
    background: var(--mks-bg-card);
    border: 1px solid var(--mks-border);
    border-radius: var(--mks-radius);
    padding: 2.4rem 2rem;
    overflow: hidden;
    transition: border-color var(--mks-transition), box-shadow var(--mks-transition), transform var(--mks-transition);
}

.mks-product-card:hover {
    border-color: var(--mks-accent);
    box-shadow: 0 8px 32px rgba(235, 110, 55, 0.1), inset 0 0 0 1px var(--mks-accent-dim);
    transform: translateY(-3px);
}

.mks-card-hex-accent {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 90px;
    height: 104px;
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    background: var(--mks-accent-dim);
    transition: background var(--mks-transition), transform var(--mks-transition);
}

.mks-product-card:hover .mks-card-hex-accent {
    background: var(--mks-accent-glow);
    transform: scale(1.15) rotate(15deg);
}

.mks-card-icon {
    width: 52px;
    height: 52px;
    color: var(--mks-accent);
    margin-bottom: 1.3rem;
}

.mks-card-icon svg {
    width: 100%;
    height: 100%;
}

.mks-card-title {
    font-family: var(--mks-font-heading);
    font-size: 1.3rem;
    margin-bottom: 0.7rem;
    color: var(--mks-text);
}

.mks-card-desc {
    font-size: 0.93rem;
    color: var(--mks-text-muted);
    line-height: 1.7;
}

/* ---- Marquee Strip ---- */

.mks-marquee-strip {
    overflow: hidden;
    padding: 1.4rem 0;
    background: var(--mks-bg-light);
    border-top: 1px solid var(--mks-border);
    border-bottom: 1px solid var(--mks-border);
}

.mks-marquee-track {
    display: flex;
    align-items: center;
    gap: 2rem;
    white-space: nowrap;
    animation: mks-scroll 35s linear infinite;
    width: max-content;
}

.mks-marquee-item {
    font-family: var(--mks-font-heading);
    font-size: 1.1rem;
    color: var(--mks-text-dim);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.mks-marquee-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--mks-accent);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    flex-shrink: 0;
}

@keyframes mks-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ---- Identity Section ---- */

.mks-identity {
    padding: 6rem 0;
}

.mks-identity-layout {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 4rem;
    align-items: start;
}

.mks-identity-badge {
    text-align: center;
}

.mks-badge-hex {
    width: 140px;
    height: 160px;
    margin: 0 auto 1rem;
}

.mks-badge-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 20px rgba(235, 110, 55, 0.2));
}

.mks-badge-label {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: var(--mks-accent-dim);
    color: var(--mks-accent);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: 20px;
}

.mks-info-card {
    background: var(--mks-bg-card);
    border: 1px solid var(--mks-border);
    border-radius: var(--mks-radius);
    padding: 2rem 2.4rem;
}

.mks-info-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.9rem 0;
    gap: 1.5rem;
}

.mks-info-label {
    font-size: 0.85rem;
    color: var(--mks-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
    flex-shrink: 0;
}

.mks-info-value {
    font-size: 1rem;
    color: var(--mks-text);
    text-align: right;
}

.mks-info-separator {
    height: 1px;
    background: var(--mks-border);
}

/* ---- Contact Section ---- */

.mks-contact {
    padding: 6rem 0;
}

.mks-contact-layout {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 3.5rem;
    align-items: start;
}

.mks-contact-form {
    background: var(--mks-bg-card);
    border: 1px solid var(--mks-border);
    border-radius: var(--mks-radius);
    padding: 2.4rem;
}

.mks-form-group {
    margin-bottom: 1.4rem;
}

.mks-form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--mks-text-muted);
    margin-bottom: 0.45rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.mks-form-input {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--mks-bg);
    border: 1px solid var(--mks-border);
    border-radius: var(--mks-radius);
    color: var(--mks-text);
    font-family: var(--mks-font-body);
    font-size: 0.95rem;
    transition: border-color var(--mks-transition), box-shadow var(--mks-transition);
    outline: none;
}

.mks-form-input::placeholder {
    color: var(--mks-text-dim);
}

.mks-form-input:focus {
    border-color: var(--mks-accent);
    box-shadow: 0 0 0 3px var(--mks-accent-dim);
}

.mks-form-input.mks-input-error {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.15);
}

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

.mks-form-error {
    display: block;
    font-size: 0.8rem;
    color: #e74c3c;
    margin-top: 0.3rem;
    min-height: 1.1em;
}

.mks-btn-submit {
    width: 100%;
    margin-top: 0.5rem;
}

.mks-contact-details {
    padding-top: 0.5rem;
}

.mks-detail-block {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--mks-border);
}

.mks-detail-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.mks-detail-heading {
    font-family: var(--mks-font-heading);
    font-size: 1.1rem;
    color: var(--mks-accent);
    margin-bottom: 0.45rem;
}

.mks-detail-text {
    color: var(--mks-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

.mks-link {
    color: var(--mks-text);
    border-bottom: 1px solid var(--mks-text-dim);
    transition: border-color var(--mks-transition), color var(--mks-transition);
}

.mks-link:hover {
    color: var(--mks-accent);
    border-color: var(--mks-accent);
}

/* ---- Footer ---- */

.mks-footer {
    padding: 3rem 0 2rem;
    background: #091418;
    border-top: 1px solid var(--mks-border);
}

.mks-footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.mks-footer-brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.mks-footer-nav {
    display: flex;
    gap: 1.8rem;
}

.mks-footer-nav a {
    color: var(--mks-text-dim);
    font-size: 0.88rem;
    transition: color var(--mks-transition);
}

.mks-footer-nav a:hover {
    color: var(--mks-text);
}

.mks-footer-rule {
    height: 1px;
    background: var(--mks-border);
    margin-bottom: 1.5rem;
}

.mks-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mks-footer-copy {
    font-size: 0.82rem;
    color: var(--mks-text-dim);
}

.mks-footer-duns {
    font-size: 0.8rem;
    color: var(--mks-text-dim);
    letter-spacing: 0.04em;
}

/* ---- Reveal Animations ---- */

.mks-reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

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

/* ---- Responsive ---- */

@media (max-width: 900px) {
    .mks-identity-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .mks-contact-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 680px) {
    :root {
        --mks-spacing: 1.4rem;
    }

    .mks-nav-toggle {
        display: flex;
    }

    .mks-nav-links {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: rgba(14, 30, 34, 0.96);
        backdrop-filter: blur(14px);
        flex-direction: column;
        padding: 1.5rem var(--mks-spacing);
        gap: 1.2rem;
        border-bottom: 1px solid var(--mks-border);
        transform: translateY(-120%);
        transition: transform 0.35s ease;
    }

    .mks-nav-links.mks-nav-open {
        transform: translateY(0);
    }

    .mks-hero {
        min-height: 85vh;
        padding: 100px var(--mks-spacing) 60px;
    }

    .mks-product-grid {
        grid-template-columns: 1fr;
    }

    .mks-info-row {
        flex-direction: column;
        gap: 0.25rem;
    }

    .mks-info-value {
        text-align: left;
    }

    .mks-footer-top {
        flex-direction: column;
        gap: 1.2rem;
    }

    .mks-footer-nav {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .mks-footer-bottom {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}