/* ============================================================
   Pala Metals and Sands Pvt Ltd
   Industrial / bold theme — charcoal, steel, amber accent
   ============================================================ */

:root {
    --charcoal: #16181d;
    --charcoal-2: #1e2128;
    --charcoal-3: #262a33;
    --steel: #3a4049;
    --steel-light: #5a626e;
    --amber: #f5a623;
    --amber-dark: #d68910;
    --text: #e8eaed;
    --text-dim: #a7adb8;
    --text-muted: #6d7480;
    --white: #ffffff;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.14);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
    --radius: 4px;
    --container: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--charcoal);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Oswald', 'Inter', sans-serif;
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

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

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

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.text-accent {
    color: var(--amber);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Oswald', sans-serif;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
    background: var(--amber);
    color: var(--charcoal);
}

.btn-primary:hover {
    background: var(--amber-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(245, 166, 35, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--line-strong);
}

.btn-outline:hover {
    border-color: var(--amber);
    color: var(--amber);
}

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(22, 24, 29, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
    background: rgba(22, 24, 29, 0.97);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-name {
    font-family: 'Oswald', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--white);
}

.logo-tagline {
    font-size: 0.68rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--amber);
    font-weight: 500;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-links a {
    display: block;
    font-family: 'Oswald', sans-serif;
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-dim);
    padding: 8px 16px;
    border-radius: var(--radius);
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
}

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

.nav-cta {
    margin-left: 8px;
}

.nav-cta a {
    background: var(--amber);
    color: var(--charcoal) !important;
}

.nav-cta a:hover {
    background: var(--amber-dark);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.mobile-menu-btn span {
    width: 26px;
    height: 2px;
    background: var(--text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-menu-btn.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.open span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    /* top padding clears the fixed navbar (72px) plus breathing room;
       bottom padding reserves space for the absolute .hero-stats strip
       so vertically-centered content never runs underneath it */
    padding: 128px 0 160px;
    background:
        linear-gradient(180deg, rgba(22, 24, 29, 0.75) 0%, rgba(22, 24, 29, 0.92) 100%),
        repeating-linear-gradient(45deg, var(--charcoal) 0px, var(--charcoal) 40px, var(--charcoal-2) 40px, var(--charcoal-2) 80px);
    overflow: hidden;
}

.hero-image {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.25;
}

/* Diagonal hazard accent strip */
.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: repeating-linear-gradient(-45deg, var(--amber) 0px, var(--amber) 20px, var(--charcoal) 20px, var(--charcoal) 40px);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 820px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'Oswald', sans-serif;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--amber);
    border: 1px solid rgba(245, 166, 35, 0.3);
    background: rgba(245, 166, 35, 0.06);
    padding: 8px 16px;
    border-radius: 40px;
    margin-bottom: 28px;
}

.hero h1 {
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-dim);
    max-width: 620px;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Stats strip */
.hero-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 3;
    background: rgba(30, 33, 40, 0.85);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--line);
}

.hero-stats-inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
}

.stat {
    padding: 24px 20px;
    text-align: center;
    position: relative;
}

.stat:not(:last-child)::after {
    content: "";
    position: absolute;
    right: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: var(--line);
}

.stat-num {
    font-family: 'Oswald', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--amber);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ---------- Sections ---------- */
.section {
    padding: 100px 0;
}

.section-tag {
    display: inline-block;
    font-family: 'Oswald', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--amber);
    margin-bottom: 16px;
    position: relative;
    padding-left: 40px;
}

.section-tag::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 28px;
    height: 2px;
    background: var(--amber);
}

.section-header {
    max-width: 760px;
    margin-bottom: 56px;
}

.section-header.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-header.center .section-tag {
    padding-left: 0;
}

.section-header.center .section-tag::before {
    display: none;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--white);
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.08rem;
    color: var(--text-dim);
}

/* ---------- About ---------- */
.about-section {
    background: var(--charcoal-2);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

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

.about-features {
    display: grid;
    gap: 20px;
}

.feature {
    display: flex;
    gap: 18px;
    padding: 24px;
    background: var(--charcoal-3);
    border: 1px solid var(--line);
    border-left: 3px solid var(--amber);
    border-radius: var(--radius);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature:hover {
    transform: translateX(6px);
}

.feature-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    color: var(--amber);
}

.feature h4 {
    font-size: 1.1rem;
    color: var(--white);
    margin-bottom: 6px;
}

.feature p {
    font-size: 0.95rem;
    color: var(--text-dim);
}

/* ---------- Products ---------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.products-grid--single {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
}

.product-card {
    background: var(--charcoal-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: rgba(245, 166, 35, 0.4);
    box-shadow: var(--shadow);
}

.product-top {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 28px 28px 20px;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(135deg, var(--charcoal-3), var(--charcoal-2));
}

.product-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    background: rgba(245, 166, 35, 0.1);
    border: 1px solid rgba(245, 166, 35, 0.25);
    border-radius: var(--radius);
    color: var(--amber);
}

.product-top h3 {
    font-size: 1.3rem;
    color: var(--white);
}

.product-body {
    padding: 24px 28px 28px;
}

.product-body > p {
    color: var(--text-dim);
    font-size: 0.96rem;
    margin-bottom: 20px;
}

.size-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.size-tag {
    font-family: 'Oswald', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    color: var(--amber);
    background: rgba(245, 166, 35, 0.08);
    border: 1px solid rgba(245, 166, 35, 0.2);
    padding: 4px 12px;
    border-radius: 40px;
}

.product-uses {
    list-style: none;
    display: grid;
    gap: 10px;
}

.product-uses li {
    font-size: 0.92rem;
    color: var(--text-dim);
    padding-left: 24px;
    position: relative;
}

.product-uses li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--amber);
    transform: rotate(45deg);
}

/* ---------- CTA band ---------- */
.cta-band {
    background:
        linear-gradient(rgba(22, 24, 29, 0.92), rgba(22, 24, 29, 0.92)),
        repeating-linear-gradient(-45deg, var(--amber) 0px, var(--amber) 2px, transparent 2px, transparent 30px);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 64px 0;
}

.cta-band-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.cta-band h2 {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    color: var(--white);
    max-width: 640px;
}

.cta-band p {
    color: var(--text-dim);
    margin-top: 8px;
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
    padding: 140px 0 60px;
    background:
        linear-gradient(180deg, rgba(22, 24, 29, 0.9), rgba(22, 24, 29, 0.96)),
        repeating-linear-gradient(45deg, var(--charcoal) 0px, var(--charcoal) 40px, var(--charcoal-2) 40px, var(--charcoal-2) 80px);
    border-bottom: 1px solid var(--line);
    position: relative;
}

.page-hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: repeating-linear-gradient(-45deg, var(--amber) 0px, var(--amber) 20px, var(--charcoal) 20px, var(--charcoal) 40px);
}

.page-hero h1 {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    color: var(--white);
    margin-bottom: 12px;
}

.page-hero p {
    color: var(--text-dim);
    font-size: 1.1rem;
    max-width: 640px;
}

.breadcrumb {
    font-family: 'Oswald', sans-serif;
    font-size: 0.8rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.breadcrumb a:hover {
    color: var(--amber);
}

/* ---------- Licences ---------- */
.licence-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 64px;
}

.licence-card {
    background: var(--charcoal-2);
    border: 1px solid var(--line);
    border-top: 3px solid var(--amber);
    border-radius: var(--radius);
    padding: 28px;
}

.licence-card h3 {
    font-size: 1.05rem;
    color: var(--white);
    margin-bottom: 16px;
}

.licence-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px dashed var(--line);
    font-size: 0.9rem;
}

.licence-row:last-child {
    border-bottom: none;
}

.licence-row .label {
    color: var(--text-muted);
}

.licence-row .value {
    color: var(--text);
    text-align: right;
    font-weight: 500;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    color: #4ade80;
}

.status-badge::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4ade80;
}

/* Compliance reports table */
.compliance-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--charcoal-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.compliance-table th {
    font-family: 'Oswald', sans-serif;
    text-align: left;
    font-size: 0.82rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 16px 20px;
    background: var(--charcoal-3);
    border-bottom: 1px solid var(--line);
}

.compliance-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--line);
    font-size: 0.92rem;
    color: var(--text-dim);
}

.compliance-table tr:last-child td {
    border-bottom: none;
}

.compliance-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.table-link {
    color: var(--amber);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.table-link:hover {
    text-decoration: underline;
}

/* ---------- Contact ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info-card {
    background: var(--charcoal-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 36px;
}

.contact-item {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--line);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-item-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    background: rgba(245, 166, 35, 0.1);
    border-radius: var(--radius);
    color: var(--amber);
}

.contact-item h4 {
    font-size: 0.85rem;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-item p,
.contact-item a {
    color: var(--text);
    font-size: 0.98rem;
}

.contact-item a:hover {
    color: var(--amber);
}

.contact-form {
    background: var(--charcoal-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 36px;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    font-family: 'Oswald', sans-serif;
    font-size: 0.82rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: var(--charcoal);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    padding: 12px 14px;
    color: var(--text);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--amber);
}

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

.form-note {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 12px;
}

.map-embed {
    margin-top: 48px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    height: 360px;
}

.map-embed iframe {
    width: 100%;
    height: 100%;
    border: 0;
    filter: grayscale(0.3) contrast(1.1);
}

/* ---------- Footer ---------- */
.footer {
    background: var(--charcoal-2);
    border-top: 1px solid var(--line);
    padding: 64px 0 28px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1.4fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--text-dim);
    font-size: 0.94rem;
    margin-top: 20px;
    max-width: 340px;
}

.footer h4 {
    font-size: 0.9rem;
    letter-spacing: 1.5px;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
    display: grid;
    gap: 12px;
}

.footer-links a,
.footer-links li {
    color: var(--text-dim);
    font-size: 0.92rem;
}

.footer-links a:hover {
    color: var(--amber);
}

.footer-bottom {
    border-top: 1px solid var(--line);
    padding-top: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.86rem;
}

/* ---------- Placeholder highlight ---------- */
.placeholder {
    background: rgba(245, 166, 35, 0.12);
    border-bottom: 1px dashed var(--amber);
    padding: 0 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: var(--charcoal-2);
        border-bottom: 1px solid var(--line);
        padding: 12px;
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

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

    .nav-links a {
        padding: 14px 16px;
    }

    .nav-cta {
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        /* two-row stats strip is taller on mobile, so reserve more room */
        padding-bottom: 240px;
    }

    .hero-stats-inner {
        grid-template-columns: 1fr 1fr;
    }

    .stat:nth-child(2)::after {
        display: none;
    }

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

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

    .section {
        padding: 72px 0;
    }
}

/* ---------- Document viewer modal ---------- */
.doc-view {
    cursor: pointer;
}

.doc-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.doc-modal.open {
    display: flex;
}

.doc-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(10, 11, 14, 0.82);
    backdrop-filter: blur(4px);
}

.doc-modal-panel {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    width: min(900px, 100%);
    height: min(88vh, 100%);
    background: var(--charcoal-2);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.doc-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(135deg, var(--charcoal-3), var(--charcoal-2));
}

.doc-modal-head h4 {
    font-family: 'Oswald', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
}

.doc-modal-close {
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--text-dim);
    background: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.doc-modal-close:hover {
    color: var(--amber);
    border-color: rgba(245, 166, 35, 0.4);
}

.doc-modal-body {
    position: relative;
    flex: 1;
    min-height: 0;
    overflow: auto;
    background: #525659;
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
}

.doc-pages {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 20px;
}

.doc-page {
    width: 100%;
    max-width: 820px;
    height: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    /* discourage drag-to-save of the rendered page */
    -webkit-user-drag: none;
    pointer-events: none;
}

.doc-loading {
    position: absolute;
    top: 24px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 0.9rem;
    color: #e8eaed;
}