/* ============================================================
   RHINO TECHNOCRATE – styles.css  (Material Design 3 Edition)
   Architecture: Tokens → Reset → MD3 Base → Layout → Components
   Naming: BEM | Approach: Mobile-First | Version: 2.0
   ============================================================ */

/* ============================================================
   1. MD3 DESIGN TOKENS
   ============================================================ */
:root {
    /* MD3 Primary (Navy Blue) */
    --md-primary: #0d2f6e;
    --md-on-primary: #ffffff;
    --md-primary-container: #d6e3ff;
    --md-on-primary-container: #001849;

    /* MD3 Secondary (Green – brand accent) */
    --md-secondary: #22c55e;
    --md-on-secondary: #003919;
    --md-secondary-container: #aff4c6;
    --md-on-secondary-container: #002111;

    /* MD3 Tertiary (Sky Blue) */
    --md-tertiary: #38bdf8;
    --md-on-tertiary: #003549;
    --md-tertiary-container: #c2e8ff;
    --md-on-tertiary-container: #001e2b;

    /* MD3 Error */
    --md-error: #ba1a1a;
    --md-error-container: #ffdad6;

    /* MD3 Surface / Background */
    --md-background: #f8fafc;
    --md-surface: #ffffff;
    --md-surface-variant: #e1e8f4;
    --md-on-surface: #0f172a;
    --md-on-surface-variant: #44537a;
    --md-outline: #74788d;
    --md-outline-variant: #c5c8da;

    /* MD3 Inverse */
    --md-inverse-surface: #0f172a;
    --md-inverse-on-surface: #eef1fb;

    /* MD3 Tonal Surfaces (elevation layers) */
    --md-surface-1: rgba(13, 47, 110, 0.05);
    --md-surface-2: rgba(13, 47, 110, 0.08);
    --md-surface-3: rgba(13, 47, 110, 0.11);
    --md-surface-4: rgba(13, 47, 110, 0.12);
    --md-surface-5: rgba(13, 47, 110, 0.14);

    /* Elevation – FLAT (no shadows) */
    --md-elevation-1: none;
    --md-elevation-2: none;
    --md-elevation-3: none;
    --md-elevation-4: none;
    --md-elevation-5: none;

    /* Typography */
    --md-font-brand: 'Roboto', 'Montserrat', sans-serif;
    --md-font-plain: 'Roboto', 'Open Sans', sans-serif;

    /* MD3 Type Scale */
    --md-display-lg: clamp(2.8rem, 7vw, 4.5rem);
    --md-display-md: clamp(2.2rem, 5vw, 3.2rem);
    --md-display-sm: clamp(1.75rem, 4vw, 2.5rem);
    --md-headline-lg: clamp(1.5rem, 3vw, 2rem);
    --md-headline-md: clamp(1.3rem, 2.5vw, 1.75rem);
    --md-headline-sm: clamp(1.1rem, 2vw, 1.5rem);
    --md-title-lg: 1.375rem;
    --md-title-md: 1rem;
    --md-title-sm: 0.875rem;
    --md-body-lg: 1rem;
    --md-body-md: 0.875rem;
    --md-body-sm: 0.75rem;
    --md-label-lg: 0.875rem;
    --md-label-md: 0.75rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --section-py: clamp(3rem, 8vw, 5.5rem);

    /* Shape – ALL SHARP (no curves) */
    --md-shape-none: 0;
    --md-shape-xs: 0;
    --md-shape-sm: 0;
    --md-shape-md: 0;
    --md-shape-lg: 0;
    --md-shape-xl: 0;
    --md-shape-2xl: 0;
    --md-shape-full: 0;

    /* Transitions */
    --md-motion-standard: cubic-bezier(0.2, 0, 0, 1);
    --md-duration-short: 150ms;
    --md-duration-medium: 300ms;
    --md-duration-long: 500ms;

    /* Layout */
    --container-max: 1200px;
    --container-px: clamp(1rem, 5vw, 2rem);
    --header-h: 152px;
    --topbar-h: 40px;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--md-secondary) var(--md-outline-variant);
}

body {
    font-family: var(--md-font-plain);
    font-size: var(--md-body-lg);
    color: var(--md-on-surface);
    background: var(--md-background);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

ul,
ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: var(--md-font-plain);
}

input,
textarea {
    font-family: var(--md-font-plain);
    font-size: var(--md-body-lg);
}

/* ============================================================
   3. UTILITIES
   ============================================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-px);
}

.section {
    padding-block: var(--section-py);
}

.section--tonal {
    background: var(--md-surface-1);
}

.section--inverse {
    background: var(--md-primary);
    color: var(--md-on-primary);
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--md-motion-standard), transform 0.6s var(--md-motion-standard);
}

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

.reveal:nth-child(2) {
    transition-delay: 0.08s;
}

.reveal:nth-child(3) {
    transition-delay: 0.16s;
}

.reveal:nth-child(4) {
    transition-delay: 0.24s;
}

.reveal:nth-child(5) {
    transition-delay: 0.32s;
}

.reveal:nth-child(6) {
    transition-delay: 0.40s;
}

/* MD3 Ripple */
.ripple-host {
    position: relative;
    overflow: hidden;
}

.ripple-host .ripple-wave {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    transform: scale(0);
    animation: rippleAnim 0.6s linear;
    pointer-events: none;
}

@keyframes rippleAnim {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ============================================================
   4. MD3 TYPOGRAPHY
   ============================================================ */
h1,
h2,
h3,
h4,
h5 {
    font-family: var(--md-font-brand);
    font-weight: 700;
    color: var(--md-on-surface);
    line-height: 1.2;
}

.section__eyebrow {
    display: inline-block;
    font-family: var(--md-font-brand);
    font-size: var(--md-label-lg);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--md-tertiary);
    margin-bottom: var(--space-sm);
}

.section__title {
    font-size: var(--md-display-sm);
    color: var(--md-primary);
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.section__subtitle {
    font-size: var(--md-body-lg);
    color: var(--md-on-surface-variant);
    max-width: 56ch;
    margin-inline: auto;
    line-height: 1.75;
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

/* ============================================================
   5. MD3 BUTTONS (Filled, Outlined, Tonal, Text)
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.625rem 1.5rem;
    border-radius: var(--md-shape-full);
    font-family: var(--md-font-brand);
    font-size: var(--md-label-lg);
    font-weight: 500;
    letter-spacing: 0.006em;
    line-height: 1.25rem;
    cursor: pointer;
    border: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    transition: box-shadow var(--md-duration-short) var(--md-motion-standard);
}

/* State layer overlay */
.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity var(--md-duration-short) var(--md-motion-standard);
    border-radius: inherit;
}

.btn:hover::before {
    opacity: 0.08;
}

.btn:active::before {
    opacity: 0.12;
}

/* Filled (primary action) */
.btn--primary {
    background: var(--md-primary);
    color: var(--md-on-primary);
    box-shadow: var(--md-elevation-1);
}

.btn--primary::before {
    background: var(--md-on-primary);
}

.btn--primary:hover {
    box-shadow: var(--md-elevation-2);
}

/* Tonal (secondary action) */
.btn--tonal {
    background: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
}

.btn--tonal::before {
    background: var(--md-on-secondary-container);
}

.btn--tonal:hover {
    box-shadow: var(--md-elevation-1);
}

/* Outlined */
.btn--outlined {
    background: transparent;
    border: 1px solid var(--md-outline);
    color: var(--md-primary);
}

.btn--outlined::before {
    background: var(--md-primary);
}

.btn--outlined:hover {
    box-shadow: none;
    border-color: var(--md-primary);
}

/* Elevated (white on dark hero) */
.btn--elevated {
    background: var(--md-surface);
    color: var(--md-primary);
    box-shadow: var(--md-elevation-1);
}

.btn--elevated::before {
    background: var(--md-primary);
}

.btn--elevated:hover {
    box-shadow: var(--md-elevation-2);
}

/* Accent / Green CTA */
.btn--accent {
    background: var(--md-secondary);
    color: var(--md-on-secondary);
    box-shadow: var(--md-elevation-1);
}

.btn--accent::before {
    background: var(--md-on-secondary);
}

.btn--accent:hover {
    box-shadow: var(--md-elevation-2);
}

.btn--lg {
    padding: 0.875rem 2rem;
    font-size: var(--md-title-md);
}

.btn--full {
    width: 100%;
    justify-content: center;
}

.btn__icon {
    width: 1.1em;
    height: 1.1em;
    fill: currentColor;
    flex-shrink: 0;
}

/* ============================================================
   6. TOP BAR
   ============================================================ */
.topbar {
    background: var(--md-inverse-surface);
    height: var(--topbar-h);
    display: flex;
    align-items: center;
}

.topbar__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar__contact {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.topbar__link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.75);
    font-size: var(--md-body-sm);
    transition: color var(--md-duration-short);
}

.topbar__link:hover {
    color: var(--md-secondary);
}

.topbar__icon {
    width: 14px;
    height: 14px;
    fill: currentColor;
    flex-shrink: 0;
}

.topbar__social {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.topbar__social-link {
    width: 28px;
    height: 28px;
    border-radius: var(--md-shape-full);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    transition: background var(--md-duration-short), color var(--md-duration-short);
}

.topbar__social-link:hover {
    background: var(--md-secondary);
    color: var(--md-on-secondary);
}

.topbar__social-link svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* ============================================================
   7. MD3 HEADER / NAV (Top App Bar)
   ============================================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--md-surface);
    height: var(--header-h);
    display: flex;
    align-items: center;
    border-bottom: 1px solid transparent;
    transition: box-shadow var(--md-duration-medium) var(--md-motion-standard),
        border-color var(--md-duration-medium) var(--md-motion-standard);
}

.header--scrolled {
    box-shadow: var(--md-elevation-2);
    border-color: var(--md-outline-variant);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.header__logo {
    display: flex;
    align-items: center;
}

/* Header logo image */
.header__logo-img {
    height: 136px;
    width: auto;
    max-width: 320px;
}

/* CSS Wordmark (fallback if no image) */
.wordmark {
    display: inline-flex;
    flex-direction: column;
    line-height: 1;
    user-select: none;
}

.wordmark__rhino {
    font-family: var(--md-font-brand);
    font-weight: 900;
    font-size: 1.65rem;
    letter-spacing: 0.08em;
    color: var(--md-tertiary);
    /* sky blue */
}

.wordmark__sub {
    font-family: var(--md-font-brand);
    font-weight: 700;
    font-size: 0.6rem;
    letter-spacing: 0.22em;
    color: var(--md-secondary);
    /* lime green */
    margin-top: 1px;
}

/* Footer variant – slightly larger on dark bg */
.wordmark--footer .wordmark__rhino {
    font-size: 1.9rem;
}

.wordmark--footer .wordmark__sub {
    font-size: 0.65rem;
    letter-spacing: 0.26em;
}

/* Nav */
.nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav__link {
    font-family: var(--md-font-brand);
    font-size: var(--md-label-lg);
    font-weight: 500;
    color: var(--md-on-surface-variant);
    padding: 0.5rem 0.75rem;
    border-radius: var(--md-shape-full);
    position: relative;
    transition: color var(--md-duration-short), background var(--md-duration-short);
}

.nav__link:hover {
    color: var(--md-primary);
    background: var(--md-surface-2);
}

.nav__link.active {
    color: var(--md-primary);
    font-weight: 700;
}

/* ── Services dropdown ── */
.nav__item--dropdown {
    position: relative;
}

.nav__link--has-dropdown {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav__caret {
    font-size: 0.7rem;
    line-height: 1;
    transition: transform var(--md-duration-short);
}

.nav__dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 220px;
    background: var(--md-surface);
    border: 1px solid var(--md-outline-variant);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    z-index: 200;
    flex-direction: column;
    padding: 4px 0;
}

.nav__item--dropdown:hover .nav__dropdown,
.nav__item--dropdown:focus-within .nav__dropdown {
    display: flex;
}

.nav__item--dropdown:hover .nav__caret {
    transform: rotate(180deg);
}

.nav__dropdown-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    font-size: var(--md-label-lg);
    font-weight: 500;
    color: var(--md-on-surface);
    white-space: nowrap;
    transition: background var(--md-duration-short), color var(--md-duration-short);
}

.nav__dropdown-link .material-icons {
    font-size: 18px;
    color: var(--md-primary);
}

.nav__dropdown-link:hover {
    background: var(--md-surface-2);
    color: var(--md-primary);
}

.nav__link--cta {
    background: var(--md-primary);
    color: var(--md-on-primary) !important;
    padding: 0.5rem 1.25rem;
    box-shadow: var(--md-elevation-1);
}

.nav__link--cta:hover {
    background: var(--md-primary);
    box-shadow: var(--md-elevation-2);
}

/* Hamburger */
.header__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: var(--md-shape-sm);
    transition: background var(--md-duration-short);
}

.header__toggle:hover {
    background: var(--md-surface-2);
}

.header__toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--md-on-surface);
    border-radius: var(--md-shape-full);
    transition: transform var(--md-duration-medium) var(--md-motion-standard),
        opacity var(--md-duration-medium), width var(--md-duration-medium);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(2) {
    opacity: 0;
    width: 0;
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   8. MD3 HERO
   ============================================================ */
.hero {
    position: relative;
    min-height: calc(100svh - var(--header-h) - var(--topbar-h));
    background: linear-gradient(150deg, var(--md-on-primary-container) 0%, var(--md-primary) 55%, #1a5fa8 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 50%, rgba(56, 189, 248, 0.1) 0%, transparent 60%),
        radial-gradient(circle at 20% 80%, rgba(34, 197, 94, 0.07) 0%, transparent 50%);
    pointer-events: none;
}

/* Inverted background design texture overlay */
.hero__bg-design {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    object-fit: contain;
    object-position: right center;
    filter: invert(1);
    opacity: 1;
    mix-blend-mode: normal;
    pointer-events: none;
    z-index: 0;
}

.hero__particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero__container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
    padding-block: var(--space-4xl);
}

.hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--md-label-lg);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--md-secondary);
    margin-bottom: var(--space-md);
}

.hero__eyebrow::before {
    content: '';
    display: inline-block;
    width: 28px;
    height: 2px;
    background: var(--md-secondary);
    border-radius: var(--md-shape-full);
}

.hero__title {
    font-size: var(--md-display-lg);
    font-weight: 800;
    color: var(--md-on-primary);
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.hero__title--accent {
    background: linear-gradient(135deg, var(--md-tertiary), var(--md-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--md-title-lg);
    color: rgba(255, 255, 255, 0.8);
    max-width: 52ch;
    margin-bottom: var(--space-2xl);
    line-height: 1.75;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.hero__visual {
    display: none;
    justify-content: center;
    align-items: center;
}

.hero__rhino-wrap {
    width: clamp(240px, 38vw, 460px);
    animation: float 5s ease-in-out infinite;
}

.hero__rhino {
    width: 100%;
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0)
    }

    50% {
        transform: translateY(-18px)
    }
}

.hero__scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero__scroll-arrow {
    display: block;
    width: 24px;
    height: 24px;
    border-right: 2px solid rgba(255, 255, 255, 0.5);
    border-bottom: 2px solid rgba(255, 255, 255, 0.5);
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: rotate(45deg) translate(0, 0);
        opacity: 0.5
    }

    50% {
        transform: rotate(45deg) translate(4px, 4px);
        opacity: 1
    }
}

/* ============================================================
   9. ABOUT
   ============================================================ */
.about__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about__img-wrap {
    position: relative;
    border-radius: var(--md-shape-2xl);
    overflow: hidden;
    box-shadow: var(--md-elevation-4);
}

.about__img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.6s var(--md-motion-standard);
}

.about__img-wrap:hover .about__img {
    transform: scale(1.04);
}

.about__badge {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    background: var(--md-secondary);
    color: var(--md-on-secondary);
    border-radius: var(--md-shape-lg);
    padding: var(--space-md) var(--space-lg);
    text-align: center;
    box-shadow: var(--md-elevation-3);
}

.about__badge-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1;
}

.about__badge-label {
    display: block;
    font-size: var(--md-label-md);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.85;
}

.about__text {
    color: var(--md-on-surface-variant);
    margin-bottom: var(--space-md);
}

.about__text strong {
    color: var(--md-primary);
}

.about__pillars {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-block: var(--space-xl);
}

.about__pillar {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--md-primary-container);
    border-radius: var(--md-shape-lg);
    border-left: 4px solid var(--md-secondary);
}

.about__pillar-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.about__pillar strong {
    display: block;
    font-family: var(--md-font-brand);
    color: var(--md-on-primary-container);
    font-size: var(--md-title-sm);
}

.about__pillar span {
    font-size: var(--md-body-md);
    color: var(--md-on-surface-variant);
}

/* ============================================================
   10. MD3 CARDS (Services)
   ============================================================ */
.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

/* MD3 Filled Card */
.service-card {
    background: var(--md-surface);
    border-radius: var(--md-shape-2xl);
    padding: var(--space-2xl);
    box-shadow: var(--md-elevation-1);
    border: 1px solid var(--md-outline-variant);
    transition: box-shadow var(--md-duration-medium) var(--md-motion-standard),
        transform var(--md-duration-medium) var(--md-motion-standard);
    position: relative;
    overflow: hidden;
    cursor: default;
}

.service-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--md-primary);
    opacity: 0;
    transition: opacity var(--md-duration-short);
    pointer-events: none;
    /* Never block clicks on child elements */
}

.service-card:hover {
    box-shadow: var(--md-elevation-3);
    transform: translateY(-4px);
}

.service-card:hover::after {
    opacity: 0.04;
}

/* Category badge on card */
/* Flat mining card – no gradient */
.service-card--mining {
    border-color: var(--md-tertiary);
    background: var(--md-surface);
    border-left: 3px solid var(--md-tertiary);
}

.service-card__icon-wrap {
    width: 56px;
    height: 56px;
    background: var(--md-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    transition: background var(--md-duration-medium);
}

.service-card:hover .service-card__icon-wrap {
    background: var(--md-primary);
}

/* Material Icons sizing inside icon-wrap */
.service-card__icon {
    font-size: 32px !important;
    width: auto;
    height: auto;
    color: var(--md-primary);
    transition: color var(--md-duration-medium);
}

.service-card:hover .service-card__icon {
    color: var(--md-on-primary);
}

/* Mining card icons */
.service-card--mining .service-card__icon-wrap {
    background: var(--md-tertiary-container);
}

.service-card--mining .service-card__icon {
    color: var(--md-on-tertiary-container);
}

.service-card--mining:hover .service-card__icon-wrap {
    background: var(--md-tertiary);
}

.service-card--mining:hover .service-card__icon {
    color: var(--md-on-tertiary);
}

.service-card__chip {
    display: inline-block;
    font-size: var(--md-label-md);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 2px 10px;
    border-radius: var(--md-shape-full);
    background: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
    margin-bottom: var(--space-md);
}

.service-card__chip--mining {
    background: var(--md-tertiary-container);
    color: var(--md-on-tertiary-container);
}

.service-card__title {
    font-size: var(--md-headline-sm);
    color: var(--md-primary);
    margin-bottom: var(--space-sm);
}

.service-card__text {
    font-size: var(--md-body-md);
    color: var(--md-on-surface-variant);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.service-card__link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: var(--md-font-brand);
    font-size: var(--md-label-lg);
    font-weight: 700;
    color: var(--md-primary);
    transition: color var(--md-duration-short), gap var(--md-duration-short);
}

.service-card__link:hover {
    color: var(--md-secondary);
    gap: 8px;
}

/* ============================================================
   11. CATEGORY DIVIDER (IT vs Mining)
   ============================================================ */
.services__divider {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.services__divider-line {
    flex: 1;
    height: 1px;
    background: var(--md-outline-variant);
}

.services__divider-label {
    font-family: var(--md-font-brand);
    font-size: var(--md-label-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--md-on-surface-variant);
    padding: 0.35rem 1rem;
    border-radius: var(--md-shape-full);
    background: var(--md-tertiary-container);
    color: var(--md-on-tertiary-container);
}

/* ============================================================
   12. STATS
   ============================================================ */
.stats {
    background: var(--md-primary);
}

.stats .section__eyebrow {
    color: var(--md-secondary);
}

.stats .section__title {
    color: var(--md-on-primary);
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.stat-card {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--md-shape-2xl);
    backdrop-filter: blur(10px);
    transition: background var(--md-duration-medium), transform var(--md-duration-medium);
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.stat-card__number {
    display: inline;
    font-family: var(--md-font-brand);
    font-size: clamp(2.5rem, 6vw, 3.75rem);
    font-weight: 800;
    color: var(--md-secondary);
}

.stat-card__suffix {
    font-family: var(--md-font-brand);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--md-tertiary);
}

.stat-card__label {
    display: block;
    margin-top: var(--space-sm);
    font-size: var(--md-body-sm);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.75);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ============================================================
   13. TECH STACK (Infinite Marquee)
   ============================================================ */
.tech-stack__track-wrap {
    overflow: hidden;
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
    mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
    margin-block: var(--space-xl) 0;
}

.tech-stack__track {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
    animation: marquee 28s linear infinite;
    width: max-content;
}

.tech-stack__track:hover {
    animation-play-state: paused;
}

@keyframes marquee {
    0% {
        transform: translateX(0)
    }

    100% {
        transform: translateX(-50%)
    }
}

.tech-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    min-width: 100px;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--md-shape-xl);
    background: var(--md-surface);
    border: 1px solid var(--md-outline-variant);
    box-shadow: var(--md-elevation-1);
    transition: box-shadow var(--md-duration-medium), transform var(--md-duration-medium);
}

.tech-logo:hover {
    box-shadow: var(--md-elevation-2);
    transform: translateY(-3px);
}

.tech-logo img {
    height: 40px;
    width: auto;
    max-width: 90px;
    object-fit: contain;
    filter: grayscale(60%);
    transition: filter var(--md-duration-medium);
}

.tech-logo:hover img {
    filter: grayscale(0%);
}

.tech-logo span {
    font-size: var(--md-label-md);
    font-weight: 700;
    color: var(--md-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ============================================================
   14. TESTIMONIALS
   ============================================================ */
.testimonials__track {
    display: flex;
    transition: transform 0.5s var(--md-motion-standard);
}

.testi-card {
    flex: 0 0 100%;
    padding: var(--space-2xl);
    background: var(--md-surface);
    border-radius: var(--md-shape-2xl);
    box-shadow: var(--md-elevation-2);
    border: 1px solid var(--md-outline-variant);
    position: relative;
}

.testi-card::before {
    content: '\201C';
    font-size: 5rem;
    line-height: 1;
    font-family: Georgia, serif;
    color: var(--md-secondary);
    opacity: 0.2;
    position: absolute;
    top: var(--space-md);
    left: var(--space-xl);
    pointer-events: none;
}

.testi-card__stars {
    color: var(--md-secondary);
    font-size: var(--md-title-lg);
    margin-bottom: var(--space-md);
    letter-spacing: 2px;
}

.testi-card__quote {
    font-size: var(--md-title-lg);
    color: var(--md-on-surface-variant);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
    font-style: italic;
    border: none;
}

.testi-card__author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.testi-card__avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--md-shape-full);
    object-fit: cover;
    border: 3px solid var(--md-secondary);
}

.testi-card__name {
    display: block;
    font-family: var(--md-font-brand);
    font-size: var(--md-body-lg);
    color: var(--md-primary);
}

.testi-card__role {
    display: block;
    font-size: var(--md-body-md);
    color: var(--md-on-surface-variant);
}

.testimonials__controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.testimonials__btn {
    width: 44px;
    height: 44px;
    border-radius: var(--md-shape-full);
    background: var(--md-primary);
    color: white;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--md-duration-short), transform var(--md-duration-short), box-shadow var(--md-duration-short);
    box-shadow: var(--md-elevation-1);
}

.testimonials__btn:hover {
    background: var(--md-secondary);
    color: var(--md-on-secondary);
    transform: scale(1.1);
    box-shadow: var(--md-elevation-2);
}

.testimonials__dots {
    display: flex;
    gap: var(--space-sm);
}

.testi-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--md-shape-full);
    background: var(--md-outline-variant);
    border: none;
    cursor: pointer;
    transition: background var(--md-duration-short), width var(--md-duration-medium) var(--md-motion-standard);
}

.testi-dot.active {
    background: var(--md-primary);
    width: 24px;
}

/* ============================================================
   15. CTA BANNER
   ============================================================ */
.cta-banner {
    position: relative;
    background: linear-gradient(135deg, var(--md-primary) 0%, #1a5fa8 50%, var(--md-primary-light, #1a4a9e) 100%);
    padding-block: var(--space-4xl);
    text-align: center;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
}

.cta-banner__content {
    position: relative;
    z-index: 1;
}

.cta-banner__title {
    font-size: var(--md-display-md);
    color: white;
    margin-bottom: var(--space-md);
}

.cta-banner__text {
    font-size: var(--md-title-lg);
    color: rgba(255, 255, 255, 0.8);
    max-width: 54ch;
    margin-inline: auto;
    margin-bottom: var(--space-2xl);
}

/* ============================================================
   16. CONTACT
   ============================================================ */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-info-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--md-surface);
    border-radius: var(--md-shape-xl);
    box-shadow: var(--md-elevation-1);
    border: 1px solid var(--md-outline-variant);
    transition: box-shadow var(--md-duration-medium);
}

.contact-info-card:hover {
    box-shadow: var(--md-elevation-2);
}

.contact-info-card__icon {
    width: 44px;
    height: 44px;
    background: var(--md-primary);
    border-radius: var(--md-shape-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-card__icon svg {
    width: 20px;
    height: 20px;
    fill: white;
}

.contact-info-card strong {
    display: block;
    font-family: var(--md-font-brand);
    color: var(--md-primary);
    margin-bottom: 2px;
    font-size: var(--md-label-lg);
}

.contact-info-card span,
.contact-info-card a {
    font-size: var(--md-body-md);
    color: var(--md-on-surface-variant);
}

.contact-info-card a:hover {
    color: var(--md-primary);
}

/* MD3 Text Fields */
.contact-form {
    background: var(--md-surface);
    padding: var(--space-2xl);
    border-radius: var(--md-shape-2xl);
    box-shadow: var(--md-elevation-2);
    border: 1px solid var(--md-outline-variant);
}

.contact-form__row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

.contact-form__group {
    margin-bottom: var(--space-md);
}

.contact-form__label {
    display: block;
    font-size: var(--md-label-lg);
    font-weight: 500;
    color: var(--md-on-surface-variant);
    margin-bottom: var(--space-xs);
}

.contact-form__label span {
    color: var(--md-error);
}

.contact-form__input,
.contact-form__textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1.5px solid var(--md-outline);
    border-radius: var(--md-shape-sm);
    background: var(--md-surface);
    color: var(--md-on-surface);
    font-size: var(--md-body-lg);
    transition: border-color var(--md-duration-short), box-shadow var(--md-duration-short);
    outline: none;
}

.contact-form__input:focus,
.contact-form__textarea:focus {
    border-color: var(--md-primary);
    box-shadow: 0 0 0 3px rgba(13, 47, 110, 0.12);
}

.contact-form__textarea {
    resize: vertical;
}

.contact-form__success {
    text-align: center;
    margin-top: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--md-shape-sm);
    font-weight: 600;
    font-size: var(--md-body-md);
}

.contact-form__success.success {
    background: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
}

.contact-form__success.error {
    background: var(--md-error-container);
    color: var(--md-error);
}

/* ============================================================
   17. FOOTER
   ============================================================ */
.footer {
    background: var(--md-inverse-surface);
    color: var(--md-inverse-on-surface);
}

.footer__top {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    padding-block: var(--space-3xl);
}

.footer__logo {
    height: 72px;
    width: auto;
    max-width: 240px;
    margin-bottom: var(--space-md);
}

.footer__tagline {
    font-size: var(--md-body-md);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-lg);
    max-width: 30ch;
}

.footer__social {
    display: flex;
    gap: var(--space-sm);
}

.footer__social-link {
    width: 36px;
    height: 36px;
    border-radius: var(--md-shape-full);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    transition: background var(--md-duration-short), transform var(--md-duration-short);
}

.footer__social-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.footer__social-link:hover {
    background: var(--md-secondary);
    color: var(--md-on-secondary);
    transform: translateY(-2px);
}

.footer__heading {
    font-size: var(--md-label-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: white;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    position: relative;
}

.footer__heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--md-secondary);
    border-radius: var(--md-shape-full);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__link {
    font-size: var(--md-body-md);
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--md-duration-short), padding-left var(--md-duration-short);
}

.footer__link:hover {
    color: var(--md-secondary);
    padding-left: 4px;
}

/* Footer mining services category label */
.footer__link--category {
    color: var(--md-secondary);
    font-size: var(--md-label-md);
    font-weight: 700;
    letter-spacing: 0.06em;
    pointer-events: none;
    padding-top: var(--space-sm);
    opacity: 0.9;
}

.footer__address {
    font-style: normal;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__address p {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: var(--md-body-md);
    color: rgba(255, 255, 255, 0.6);
}

.footer__address a {
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--md-duration-short);
}

.footer__address a:hover {
    color: var(--md-secondary);
}

.footer__contact-icon {
    width: 16px;
    height: 16px;
    fill: var(--md-secondary);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer__reg {
    font-size: var(--md-body-sm);
    color: rgba(255, 255, 255, 0.35);
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-block: var(--space-lg);
}

.footer__bottom-inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
    text-align: center;
    font-size: var(--md-body-sm);
    color: rgba(255, 255, 255, 0.4);
}

/* ============================================================
   18. BACK TO TOP
   ============================================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    border-radius: var(--md-shape-full);
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
    box-shadow: var(--md-elevation-3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity var(--md-duration-medium), transform var(--md-duration-medium), box-shadow var(--md-duration-short);
    z-index: 999;
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.back-to-top:hover {
    box-shadow: var(--md-elevation-4);
    background: var(--md-primary);
    color: var(--md-on-primary);
}

/* ============================================================
   18b. LEADERSHIP / DIRECTOR SECTION
   ============================================================ */
.leadership {
    background: var(--md-surface);
}

.director-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: start;
    background: var(--md-surface);
    border-radius: var(--md-shape-2xl);
    box-shadow: var(--md-elevation-2);
    border: 1px solid var(--md-outline-variant);
    overflow: hidden;
}

.director-card__photo-col {
    position: relative;
}

.director-card__photo {
    width: 100%;
    height: 420px;
    object-fit: cover;
    object-position: top center;
    display: block;
}

.director-card__badge {
    position: absolute;
    bottom: 1.25rem;
    left: 1.25rem;
    background: var(--md-primary);
    color: var(--md-on-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--md-shape-full);
    font-size: var(--md-label-md);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    box-shadow: var(--md-elevation-2);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.director-card__badge-icon {
    font-size: 1rem;
}

.director-card__body {
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.director-card__credentials {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.director-card__cred-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--md-label-md);
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 4px 12px;
    border-radius: var(--md-shape-full);
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

.director-card__name {
    font-size: var(--md-display-sm);
    font-weight: 800;
    color: var(--md-primary);
    line-height: 1.15;
    margin: 0;
}

.director-card__title {
    font-size: var(--md-title-md);
    font-weight: 600;
    color: var(--md-secondary);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-top: -var(--space-sm);
}

.director-card__bio {
    font-size: var(--md-body-lg);
    color: var(--md-on-surface-variant);
    line-height: 1.8;
}

.director-card__industries {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    margin-top: var(--space-xs);
}

.director-card__industry {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--md-surface-1);
    border-radius: var(--md-shape-lg);
    border-left: 3px solid var(--md-tertiary);
}

.director-card__industry-icon {
    font-size: 1.4rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.director-card__industry strong {
    display: block;
    font-family: var(--md-font-brand);
    font-size: var(--md-label-lg);
    color: var(--md-primary);
    margin-bottom: 2px;
}

.director-card__industry span {
    font-size: var(--md-body-md);
    color: var(--md-on-surface-variant);
    line-height: 1.6;
}

@media (min-width: 900px) {
    .director-card {
        grid-template-columns: 380px 1fr;
    }

    .director-card__photo {
        height: 100%;
        min-height: 600px;
    }
}

/* ============================================================
   19. PARTICLE (hero)
   ============================================================ */
.particle {
    position: absolute;
    border-radius: 50%;
    opacity: 0;
    animation: particleFade var(--dur, 6s) var(--delay, 0s) ease-in-out infinite;
}

@keyframes particleFade {

    0%,
    100% {
        opacity: 0;
        transform: translateY(0) scale(1)
    }

    30% {
        opacity: 0.6
    }

    70% {
        opacity: 0.3;
        transform: translateY(calc(var(--dir, -1)*40px)) scale(0.8)
    }
}

/* ============================================================
   20. MEDIA QUERIES – TABLET (768px+)
   ============================================================ */
@media (min-width: 768px) {
    .hero__container {
        grid-template-columns: 1fr 1fr;
    }

    .hero__visual {
        display: flex;
    }

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

    .about__img {
        height: 480px;
    }

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

    .stats__grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .contact__grid {
        grid-template-columns: 1fr 1.4fr;
    }

    .contact-form__row {
        grid-template-columns: 1fr 1fr;
    }

    .footer__top {
        grid-template-columns: 1.6fr 1fr 1fr;
    }

    .footer__bottom-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* ============================================================
   21. MEDIA QUERIES – DESKTOP (1024px+)
   ============================================================ */
@media (min-width: 1024px) {
    :root {
        --header-h: 80px;
    }

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

    .footer__top {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
    }
}

/* ============================================================
   22. MOBILE MENU (max-width 767px)
   ============================================================ */
@media (max-width:767px) {
    .topbar__contact .topbar__link:last-child {
        display: none;
    }

    .header__toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: calc(var(--topbar-h) + var(--header-h));
        left: 0;
        right: 0;
        background: var(--md-surface);
        box-shadow: var(--md-elevation-3);
        padding: var(--space-lg) var(--space-xl) var(--space-xl);
        transform: translateX(100%);
        transition: transform var(--md-duration-medium) var(--md-motion-standard);
        z-index: 999;
        border-top: 1px solid var(--md-outline-variant);
        height: calc(100svh - var(--topbar-h) - var(--header-h));
        overflow-y: auto;
    }

    .nav.open {
        transform: translateX(0);
    }

    .nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .nav__link {
        display: block;
        padding: var(--space-md) 0;
        border-bottom: 1px solid var(--md-outline-variant);
        font-size: var(--md-title-md);
        border-radius: 0;
    }

    .nav__link--cta {
        display: inline-flex;
        justify-content: center;
        margin-top: var(--space-md);
        border-radius: var(--md-shape-full);
        border-bottom: none;
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================================
   23. ACCESSIBILITY
   ============================================================ */
:focus-visible {
    outline: 3px solid var(--md-tertiary);
    outline-offset: 3px;
    border-radius: var(--md-shape-xs);
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}