/* ========================================================================
   INDUSTRO — Industrial Portfolio & Engineering
   Design System: Charcoal + Cyan | Sora + Inter | 500+ lines
   ======================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

/* ─── Custom Properties ─────────────────────────────────────────────── */
:root {
  /* Brand Palette */
  --clr-charcoal: #1F2937;
  --clr-cyan: #0891B2;
  --clr-cyan-light: #22D3EE;
  --clr-cyan-dark: #0E7490;
  --clr-dark: #111827;
  --clr-white: #FFFFFF;
  --clr-gray-50: #F9FAFB;
  --clr-gray-100: #F3F4F6;
  --clr-gray-200: #E5E7EB;
  --clr-gray-300: #D1D5DB;
  --clr-gray-400: #9CA3AF;
  --clr-gray-500: #6B7280;
  --clr-gray-600: #4B5563;
  --clr-gray-700: #374151;
  --clr-gray-800: #1F2937;
  --clr-gray-900: #111827;
  --clr-overlay: rgba(17, 24, 39, 0.82);

  /* Typography */
  --ff-heading: 'Sora', sans-serif;
  --ff-body: 'Inter', sans-serif;
  --fs-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.8rem);
  --fs-sm: clamp(0.8rem, 0.75rem + 0.3vw, 0.9rem);
  --fs-base: clamp(0.95rem, 0.9rem + 0.25vw, 1.05rem);
  --fs-md: clamp(1.1rem, 1rem + 0.5vw, 1.25rem);
  --fs-lg: clamp(1.3rem, 1.1rem + 1vw, 1.75rem);
  --fs-xl: clamp(1.6rem, 1.2rem + 2vw, 2.5rem);
  --fs-2xl: clamp(2rem, 1.5rem + 2.5vw, 3.25rem);
  --fs-3xl: clamp(2.5rem, 1.8rem + 3.5vw, 4.5rem);
  --fw-light: 300;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;
  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-normal: 1.6;

  /* Spacing */
  --sp-xs: 0.5rem;
  --sp-sm: 1rem;
  --sp-md: 1.5rem;
  --sp-lg: 2rem;
  --sp-xl: 3rem;
  --sp-2xl: 5rem;
  --sp-3xl: 7rem;
  --section-y: clamp(4rem, 3rem + 5vw, 8rem);

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(1.5rem, 1rem + 2vw, 3rem);
  --grid-gap: clamp(1.5rem, 1rem + 2vw, 2.5rem);
  --border-radius: 6px;
  --radius-lg: 12px;
  --radius-xl: 20px;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 200ms;
  --duration-normal: 350ms;
  --duration-slow: 600ms;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.15);
  --shadow-cyan: 0 4px 24px rgba(8, 145, 178, 0.25);

  /* Z-Index */
  --z-header: 1000;
  --z-dropdown: 1010;
  --z-overlay: 1020;
  --z-modal: 1030;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--clr-gray-300);
  background-color: var(--clr-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

/* ─── Utility ───────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

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

.section--dark {
  background-color: var(--clr-charcoal);
}

.section--darker {
  background-color: var(--clr-gray-900);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ─── Typography ────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  color: var(--clr-white);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
h5 { font-size: var(--fs-md); }
h6 { font-size: var(--fs-base); }

p {
  margin-bottom: var(--sp-sm);
}

p:last-child {
  margin-bottom: 0;
}

.text-cyan { color: var(--clr-cyan); }
.text-white { color: var(--clr-white); }
.text-muted { color: var(--clr-gray-400); }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--clr-cyan);
  margin-bottom: var(--sp-md);
}

.section-label::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--clr-cyan);
}

.section-title {
  font-size: var(--fs-2xl);
  margin-bottom: var(--sp-md);
  max-width: 700px;
}

.section-subtitle {
  font-size: var(--fs-md);
  color: var(--clr-gray-400);
  max-width: 600px;
  line-height: var(--lh-normal);
}

.section-header {
  margin-bottom: var(--sp-2xl);
}

.section-footer {
  text-align: center;
  margin-top: var(--sp-xl);
}

/* ─── Buttons ───────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.02em;
  padding: 0.85rem 2rem;
  border-radius: var(--border-radius);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn--primary {
  background-color: var(--clr-cyan);
  color: var(--clr-white);
  box-shadow: var(--shadow-cyan);
}

.btn--primary:hover {
  background-color: var(--clr-cyan-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(8, 145, 178, 0.35);
}

.btn--outline {
  border: 2px solid var(--clr-cyan);
  color: var(--clr-cyan);
}

.btn--outline:hover {
  background-color: var(--clr-cyan);
  color: var(--clr-white);
  transform: translateY(-2px);
}

.btn--white {
  background-color: var(--clr-white);
  color: var(--clr-dark);
}

.btn--white:hover {
  background-color: var(--clr-gray-200);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: var(--fs-base);
}

.btn--sm {
  padding: 0.6rem 1.4rem;
  font-size: var(--fs-xs);
}

.btn-arrow::before {
  content: '→';
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn-arrow:hover::before {
  transform: translateX(4px);
}

/* ─── Header / Navigation ───────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: var(--sp-md) 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background-color: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--sp-xs) 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--ff-heading);
  font-size: var(--fs-md);
  font-weight: var(--fw-extrabold);
  color: var(--clr-white);
  letter-spacing: 0.04em;
}

.logo__icon {
  width: 40px;
  height: 40px;
  background: var(--clr-cyan);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-extrabold);
  font-size: 1rem;
  color: var(--clr-white);
  position: relative;
}

.logo__icon::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border: 2px solid var(--clr-white);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
}

.nav__link {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-gray-300);
  position: relative;
  padding: 0.3rem 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-cyan);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav__link:hover,
.nav__link.active {
  color: var(--clr-white);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.header__cta {
  margin-left: var(--sp-sm);
}

/* Mobile menu toggle */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  cursor: pointer;
  z-index: calc(var(--z-header) + 1);
}

.burger__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.burger.open .burger__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger.open .burger__line:nth-child(2) {
  opacity: 0;
}

.burger.open .burger__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── Hero ──────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

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

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

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(17, 24, 39, 0.92) 0%,
    rgba(31, 41, 55, 0.75) 50%,
    rgba(17, 24, 39, 0.88) 100%
  );
}

.hero__accent {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-cyan), var(--clr-cyan-light));
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 750px;
  padding-top: 6rem;
}

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--clr-cyan);
  margin-bottom: var(--sp-lg);
  padding: 0.5rem 1rem;
  border: 1px solid rgba(8, 145, 178, 0.3);
  border-radius: 100px;
  background: rgba(8, 145, 178, 0.08);
}

.hero__tag::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--clr-cyan);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero__title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-extrabold);
  color: var(--clr-white);
  margin-bottom: var(--sp-md);
  line-height: 1.05;
}

.hero__title .accent {
  color: var(--clr-cyan);
  position: relative;
}

.hero__desc {
  font-size: var(--fs-md);
  color: var(--clr-gray-300);
  margin-bottom: var(--sp-xl);
  max-width: 550px;
  line-height: var(--lh-normal);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
}

.hero__scroll {
  position: absolute;
  bottom: var(--sp-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--clr-gray-400);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  animation: float 3s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--clr-cyan), transparent);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ─── Stats Banner ──────────────────────────────────────────────────── */
.stats {
  background-color: var(--clr-charcoal);
  padding: var(--sp-xl) 0;
  position: relative;
}

.stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-cyan), transparent);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-lg);
}

.stat {
  text-align: center;
  padding: var(--sp-md);
  border-right: 1px solid rgba(8, 145, 178, 0.15);
}

.stat:last-child {
  border-right: none;
}

.stat__number {
  font-family: var(--ff-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-extrabold);
  color: var(--clr-cyan);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.stat__label {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ─── Service Cards ─────────────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}

.service-card {
  background: var(--clr-charcoal);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl) var(--sp-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-cyan), transparent);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: rgba(8, 145, 178, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-md);
  font-size: 1.6rem;
  transition: background var(--duration-normal) var(--ease-out);
}

.service-card:hover .service-card__icon {
  background: var(--clr-cyan);
  color: var(--clr-white);
}

.service-card__title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--sp-xs);
}

.service-card__text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  line-height: var(--lh-normal);
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: var(--sp-md);
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-cyan);
}

.service-card__link::after {
  content: '→';
  transition: transform var(--duration-fast) var(--ease-out);
}

.service-card__link:hover::after {
  transform: translateX(4px);
}

/* Service detail cards (services.html) */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--grid-gap);
  align-items: center;
  padding: var(--sp-xl) 0;
  border-bottom: 1px solid rgba(8, 145, 178, 0.1);
}

.service-detail:nth-child(even) {
  direction: rtl;
}

.service-detail:nth-child(even) > * {
  direction: ltr;
}

.service-detail__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
}

.service-detail__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.service-detail:hover .service-detail__image img {
  transform: scale(1.05);
}

.service-detail__content {
  padding: var(--sp-lg);
}

.service-detail__number {
  font-family: var(--ff-heading);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-extrabold);
  color: rgba(8, 145, 178, 0.12);
  line-height: 1;
  margin-bottom: var(--sp-sm);
}

.service-detail__title {
  font-size: var(--fs-xl);
  margin-bottom: var(--sp-sm);
}

.service-detail__text {
  color: var(--clr-gray-400);
  margin-bottom: var(--sp-md);
}

.service-detail__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  margin-bottom: var(--sp-md);
}

.service-detail__list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-sm);
  color: var(--clr-gray-300);
}

.service-detail__list li::before {
  content: '✓';
  color: var(--clr-cyan);
  font-weight: var(--fw-bold);
}

/* ─── Project Grid ──────────────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}

.project-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  group: project;
}

.project-card__image {
  width: 100%;
  height: 100%;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.project-card:hover .project-card__image img {
  transform: scale(1.08);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(17, 24, 39, 0.9) 0%,
    rgba(17, 24, 39, 0.3) 50%,
    transparent 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--sp-lg);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.project-card:hover .project-card__overlay {
  opacity: 1;
}

.project-card__category {
  font-family: var(--ff-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--clr-cyan);
  margin-bottom: var(--sp-xs);
}

.project-card__title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--clr-white);
}

/* Projects filter bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-xs);
  margin-bottom: var(--sp-xl);
}

.filter-btn {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  padding: 0.6rem 1.5rem;
  border-radius: 100px;
  border: 1px solid var(--clr-gray-700);
  color: var(--clr-gray-400);
  transition: all var(--duration-normal) var(--ease-out);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--clr-cyan);
  border-color: var(--clr-cyan);
  color: var(--clr-white);
}

/* ─── Testimonials ──────────────────────────────────────────────────── */
.testimonials-slider {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.testimonial-card {
  background: var(--clr-charcoal);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  position: relative;
  transition: transform var(--duration-normal) var(--ease-out);
}

.testimonial-card:hover {
  transform: translateY(-4px);
}

.testimonial-card__quote {
  font-size: 3rem;
  color: var(--clr-cyan);
  line-height: 1;
  margin-bottom: var(--sp-sm);
  font-family: Georgia, serif;
  opacity: 0.5;
}

.testimonial-card__text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-300);
  line-height: var(--lh-normal);
  margin-bottom: var(--sp-lg);
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.testimonial-card__avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--clr-cyan);
}

.testimonial-card__name {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-white);
}

.testimonial-card__role {
  font-size: var(--fs-xs);
  color: var(--clr-gray-400);
}

.testimonial-card__stars {
  color: var(--clr-cyan);
  font-size: 0.85rem;
  letter-spacing: 2px;
  margin-bottom: var(--sp-sm);
}

.star {
  color: inherit;
}

.testimonial-card__info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

/* ─── CTA Banner ────────────────────────────────────────────────────── */
.cta-banner {
  position: relative;
  padding: var(--sp-3xl) 0;
  overflow: hidden;
}

.cta-banner__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--clr-cyan-dark), var(--clr-cyan));
}

.cta-banner__pattern {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 60px 60px;
}

.cta-banner__content {
  position: relative;
  text-align: center;
  max-width: 650px;
  margin-inline: auto;
}

.cta-banner__title {
  font-size: var(--fs-2xl);
  color: var(--clr-white);
  margin-bottom: var(--sp-md);
}

.cta-banner__text {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--fs-md);
  margin-bottom: var(--sp-lg);
}

.cta-banner__actions {
  display: flex;
  justify-content: center;
  gap: var(--sp-sm);
  flex-wrap: wrap;
}

/* ─── Footer ────────────────────────────────────────────────────────── */
.footer {
  background-color: var(--clr-gray-900);
  padding-top: var(--sp-3xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--grid-gap);
  padding-bottom: var(--sp-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__brand {
  max-width: 300px;
}

.footer__desc {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  margin-top: var(--sp-sm);
  margin-bottom: var(--sp-md);
  line-height: var(--lh-normal);
}

.footer__social {
  display: flex;
  gap: var(--sp-xs);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--clr-gray-400);
  transition: all var(--duration-fast) var(--ease-out);
}

.footer__social-link:hover {
  background: var(--clr-cyan);
  border-color: var(--clr-cyan);
  color: var(--clr-white);
}

.footer__heading {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--sp-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__link {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  transition: color var(--duration-fast);
}

.footer__link:hover {
  color: var(--clr-cyan);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  margin-bottom: var(--sp-sm);
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
}

.footer__contact-icon {
  color: var(--clr-cyan);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-lg) 0;
  font-size: var(--fs-xs);
  color: var(--clr-gray-500);
}

.footer__bottom a {
  color: var(--clr-cyan);
}

.footer__bottom a:hover {
  text-decoration: underline;
}

/* ─── About Page ────────────────────────────────────────────────────── */
.about-hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.about-hero__bg {
  position: absolute;
  inset: 0;
}

.about-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--clr-dark) 0%, rgba(17, 24, 39, 0.6) 100%);
}

.about-hero__content {
  position: relative;
  z-index: 1;
  padding-bottom: var(--sp-2xl);
}

.about-hero__title {
  font-size: var(--fs-2xl);
  margin-bottom: var(--sp-sm);
}

.about-hero__desc {
  color: var(--clr-gray-300);
  max-width: 500px;
  font-size: var(--fs-md);
}

/* Story section */
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2xl);
  align-items: center;
}

.story-grid__images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-sm);
}

.story-grid__images img {
  border-radius: var(--radius-lg);
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.story-grid__content h2 {
  font-size: var(--fs-xl);
  margin-bottom: var(--sp-md);
}

.story-grid__content p {
  color: var(--clr-gray-400);
  line-height: var(--lh-normal);
  margin-bottom: var(--sp-sm);
}

/* Team */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--grid-gap);
}

.team-card {
  text-align: center;
}

.team-card__image {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--sp-md);
}

.team-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
  filter: grayscale(30%);
}

.team-card:hover .team-card__image img {
  transform: scale(1.05);
  filter: grayscale(0);
}

.team-card__name {
  font-family: var(--ff-heading);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--clr-white);
  margin-bottom: 0.2rem;
}

.team-card__role {
  font-size: var(--fs-sm);
  color: var(--clr-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
}

.value-card {
  padding: var(--sp-xl);
  background: rgba(8, 145, 178, 0.04);
  border: 1px solid rgba(8, 145, 178, 0.1);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
}

.value-card:hover {
  background: rgba(8, 145, 178, 0.08);
  border-color: rgba(8, 145, 178, 0.25);
  transform: translateY(-4px);
}

.value-card__icon {
  font-size: 2rem;
  margin-bottom: var(--sp-md);
}

.value-card__title {
  font-size: var(--fs-md);
  margin-bottom: var(--sp-xs);
}

.value-card__text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  line-height: var(--lh-normal);
}

/* ─── Process Section ───────────────────────────────────────────────── */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-lg);
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--clr-cyan), var(--clr-cyan), transparent);
  opacity: 0.2;
}

.process-step {
  text-align: center;
  position: relative;
  padding-top: var(--sp-md);
}

.process-step__number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(8, 145, 178, 0.1);
  border: 2px solid rgba(8, 145, 178, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-md);
  font-family: var(--ff-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--clr-cyan);
  position: relative;
  z-index: 1;
  background-color: var(--clr-dark);
}

.process-step__title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--sp-xs);
}

.process-step__text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
  line-height: var(--lh-normal);
}

/* ─── Contact Page ──────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--sp-2xl);
  align-items: start;
}

.contact-form {
  background: var(--clr-charcoal);
  border-radius: var(--radius-xl);
  padding: var(--sp-2xl);
}

.form-group {
  margin-bottom: var(--sp-md);
}

.form-group label {
  display: block;
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-gray-300);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: var(--clr-dark);
  border: 1px solid var(--clr-gray-700);
  border-radius: var(--border-radius);
  color: var(--clr-white);
  font-size: var(--fs-sm);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--clr-cyan);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.15);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-md);
}

.form-success {
  display: none;
  padding: var(--sp-lg);
  background: rgba(8, 145, 178, 0.1);
  border: 1px solid var(--clr-cyan);
  border-radius: var(--radius-lg);
  text-align: center;
}

.form-success.show {
  display: block;
}

.form-success__icon {
  font-size: 2.5rem;
  margin-bottom: var(--sp-sm);
}

/* Contact info cards */
.contact-info-stack {
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.contact-info-card {
  background: var(--clr-charcoal);
  border-radius: var(--radius-lg);
  padding: var(--sp-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-md);
  transition: transform var(--duration-normal) var(--ease-out);
}

.contact-info-card:hover {
  transform: translateY(-3px);
}

.contact-info-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: rgba(8, 145, 178, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.contact-info-card__title {
  font-family: var(--ff-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-white);
  margin-bottom: 0.25rem;
}

.contact-info-card__text {
  font-size: var(--fs-sm);
  color: var(--clr-gray-400);
}

.contact-info-card__text a {
  color: var(--clr-cyan);
}

.contact-info-card__text a:hover {
  text-decoration: underline;
}

/* Map embed */
.map-container {
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-top: var(--sp-lg);
  aspect-ratio: 16/9;
  background: var(--clr-charcoal);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-gray-500);
  font-size: var(--fs-sm);
}

/* ─── Reveal Animations ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
}

.stagger-children.revealed > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: none; }
.stagger-children.revealed > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: none; }
.stagger-children.revealed > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: none; }
.stagger-children.revealed > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: none; }
.stagger-children.revealed > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: none; }
.stagger-children.revealed > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: none; }

/* ─── Page Transition ───────────────────────────────────────────────── */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--clr-cyan);
  z-index: 9999;
  transform: scaleY(0);
  transform-origin: bottom;
  pointer-events: none;
}

/* ─── Responsive: 980px ─────────────────────────────────────────────── */
@media (max-width: 980px) {
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--clr-dark);
    padding: 5rem var(--sp-lg) var(--sp-lg);
    z-index: var(--z-header);
    transition: right var(--duration-normal) var(--ease-out);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
  }

  .nav.open {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-md);
  }

  .burger {
    display: flex;
  }

  .header__cta {
    display: none;
  }

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

  .stat:nth-child(2) {
    border-right: none;
  }

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

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

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

  .testimonial-card:last-child {
    display: none;
  }

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

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

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

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

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

  .process-steps::before {
    display: none;
  }

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

  .service-detail {
    grid-template-columns: 1fr;
  }

  .service-detail:nth-child(even) {
    direction: ltr;
  }
}

/* ─── Responsive: 720px ─────────────────────────────────────────────── */
@media (max-width: 720px) {
  .hero__content {
    padding-top: 5rem;
  }

  .hero__title {
    font-size: var(--fs-2xl);
  }

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

  .stat {
    border-right: none;
    border-bottom: 1px solid rgba(8, 145, 178, 0.15);
    padding: var(--sp-sm);
  }

  .stat:nth-child(3),
  .stat:nth-child(4) {
    border-bottom: none;
  }

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

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

  .testimonials-slider {
    grid-template-columns: 1fr;
  }

  .testimonial-card:last-child {
    display: block;
  }

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

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

  .process-steps {
    grid-template-columns: 1fr;
  }

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

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

  .footer__bottom {
    flex-direction: column;
    gap: var(--sp-sm);
    text-align: center;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
    text-align: center;
  }

  .filter-bar {
    justify-content: center;
  }
}

/* ─── Reduced Motion ────────────────────────────────────────────────── */
@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,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }

  .stagger-children > * {
    opacity: 1;
    transform: none;
  }

  .hero__scroll {
    animation: none;
  }
}

/* ─── Print ─────────────────────────────────────────────────────────── */
@media print {
  .header,
  .burger,
  .hero__scroll,
  .cta-banner {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  h1, h2, h3, h4, h5, h6 {
    color: black;
  }
}