/* ================================================================
   THÀNH ĐẠT – Main Stylesheet
   Author: THÀNH ĐẠT Tech Team
   Version: 2.0.0
   Description: Stylesheet chính cho website Xây Dựng – Kiểm Định – Thương Mại
================================================================ */

/* ----------------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (Variables)
---------------------------------------------------------------- */
:root {
  /* Colors */
  --color-primary:       #0F172A;  /* Navy dark */
  --color-primary-mid:  #1E293B;  /* Navy mid */
  --color-primary-light:#334155;  /* Navy light */
  --color-accent:        #2E7D32;  /* THÀNH ĐẠT green */
  --color-accent-dark:   #1B5E20;
  --color-accent-light:  #4CAF50;
  --color-white:         #FFFFFF;
  --color-gray-50:       #F8FAFC;
  --color-gray-100:      #F1F5F9;
  --color-gray-200:      #E2E8F0;
  --color-gray-400:      #94A3B8;
  --color-gray-600:      #475569;
  --color-gray-800:      #1E293B;
  --color-text:          #1E293B;
  --color-text-light:    #64748B;
  --color-success:       #22C55E;
  --color-error:         #EF4444;

  /* Typography */
  --font-heading:   'Barlow Condensed', sans-serif;
  --font-body:      'Inter', sans-serif;
  --fs-xs:          0.75rem;
  --fs-sm:          0.875rem;
  --fs-base:        1rem;
  --fs-md:          1.125rem;
  --fs-lg:          1.25rem;
  --fs-xl:          1.5rem;
  --fs-2xl:         2rem;
  --fs-3xl:         2.5rem;
  --fs-4xl:         3.5rem;
  --fs-5xl:         4.5rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container-max:   1280px;
  --container-pad:   1.5rem;
  --radius-sm:       0.375rem;
  --radius-md:       0.75rem;
  --radius-lg:       1rem;
  --radius-xl:       1.5rem;
  --radius-full:     9999px;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:   0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:   0 10px 40px rgba(0,0,0,.14);
  --shadow-xl:   0 20px 60px rgba(0,0,0,.18);
  --shadow-glow: 0 0 30px rgba(46,125,50,.25);

  /* Transitions */
  --trans-fast:   all .15s ease;
  --trans-base:   all .3s ease;
  --trans-slow:   all .5s ease;
  --trans-bounce: all .4s cubic-bezier(.34,1.56,.64,1);

  /* Header heights */
  --topbar-h:   40px;
  --header-h:   76px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--trans-base);
}

ul { list-style: none; }

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ----------------------------------------------------------------
   3. UTILITY CLASSES
---------------------------------------------------------------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: var(--space-20) 0;
}

.section--dark  { background-color: var(--color-primary); }
.section--gray  { background-color: var(--color-gray-50); }

.text-accent { color: var(--color-accent); }
.mt-1 { margin-top: var(--space-4); }
.mt-2 { margin-top: var(--space-8); }
.w-full { width: 100%; display: block; text-align: center; }

/* ----------------------------------------------------------------
   4. TYPOGRAPHY HELPERS
---------------------------------------------------------------- */
.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.section-label--light { color: var(--color-accent); }

.label-line {
  display: inline-block;
  width: 32px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header .section-label {
  justify-content: center;
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.section-title--light { color: var(--color-white); }

.section-desc {
  font-size: var(--fs-md);
  color: var(--color-text-light);
  max-width: 600px;
  margin: var(--space-4) auto 0;
  line-height: 1.7;
}

.section-desc--light { color: rgba(255,255,255,.7); }

/* ----------------------------------------------------------------
   5. BUTTONS
---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--fs-base);
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: var(--trans-base);
  white-space: nowrap;
  line-height: 1;
  cursor: pointer;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
  box-shadow: 0 4px 15px rgba(249,115,22,.35);
}
.btn--primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(249,115,22,.45);
}

.btn--cta {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
  font-size: var(--fs-sm);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(249,115,22,.3);
}
.btn--cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(249,115,22,.4);
}

.btn--outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,.6);
}
.btn--outline-white:hover {
  background: rgba(255,255,255,.12);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}
.btn--white:hover {
  background: var(--color-gray-100);
  transform: translateY(-2px);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.btn--accent:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

.btn--sm {
  font-size: var(--fs-xs);
  padding: 0.5rem 1rem;
}

.btn--lg {
  font-size: var(--fs-md);
  padding: 1rem 2rem;
}

.btn--full {
  width: 100%;
}

/* ----------------------------------------------------------------
   6. TOPBAR
---------------------------------------------------------------- */
.topbar {
  background: var(--color-primary);
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.topbar__left,
.topbar__right {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.65);
}

.topbar__left i,
.topbar__right i {
  color: var(--color-accent);
  margin-right: var(--space-1);
}

.topbar__left a,
.topbar__right a {
  color: rgba(255,255,255,.85);
}
.topbar__left a:hover,
.topbar__right a:hover { color: var(--color-accent); }

.topbar__social {
  display: flex;
  gap: var(--space-3);
}

.topbar__social a {
  color: rgba(255,255,255,.6);
  font-size: var(--fs-xs);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.15);
  transition: var(--trans-fast);
}
.topbar__social a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* ----------------------------------------------------------------
   7. HEADER
---------------------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  height: var(--header-h);
  display: flex;
  align-items: center;
  box-shadow: 0 2px 20px rgba(0,0,0,.08);
  transition: box-shadow .3s ease, background .3s ease;
}

.header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,.12);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  height: 100%;
}

/* Logo */
.header__logo,
.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.logo-text__main {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  letter-spacing: 1px;
}

.logo-text__sub {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 3px;
  line-height: 1;
  margin-top: 2px;
}

/* Nav */
.header__nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--color-primary-light);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  position: relative;
  transition: var(--trans-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: width .25s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-accent);
}
.nav-link:hover::after,
.nav-link.active::after { width: 70%; }

/* CTA */
.header__cta { flex-shrink: 0; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  margin-left: auto;
  flex-shrink: 0;
}

.hamburger__line {
  display: block;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: var(--trans-fast);
  transform-origin: center;
}

.hamburger.is-open .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}
.hamburger.is-open .hamburger__line:nth-child(2) { opacity: 0; }
.hamburger.is-open .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: calc(var(--topbar-h) + var(--header-h));
  left: 0;
  right: 0;
  background: var(--color-white);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  z-index: 999;
  transform: translateY(-110%);
  opacity: 0;
  transition: transform .35s cubic-bezier(.4,0,.2,1), opacity .25s ease;
  border-top: 3px solid var(--color-accent);
}

.mobile-nav.is-open {
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav__link {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-primary);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border-left: 3px solid transparent;
  transition: var(--trans-fast);
}
.mobile-nav__link:hover {
  color: var(--color-accent);
  background: var(--color-gray-50);
  border-left-color: var(--color-accent);
}

/* ----------------------------------------------------------------
   8. HERO SECTION
---------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: calc(100vh - var(--topbar-h) - var(--header-h));
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

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

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15,23,42,.92) 0%,
    rgba(15,23,42,.75) 50%,
    rgba(15,23,42,.55) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--space-20);
  padding-bottom: var(--space-12);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(249,115,22,.15);
  border: 1px solid rgba(249,115,22,.4);
  color: var(--color-accent-light);
  font-size: var(--fs-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  width: fit-content;
  backdrop-filter: blur(4px);
}

.hero__headline {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 7vw, var(--fs-5xl));
  font-weight: 800;
  line-height: 1.0;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-6);
  max-width: 700px;
}

.hero__sub {
  font-size: clamp(var(--fs-base), 1.8vw, var(--fs-lg));
  color: rgba(255,255,255,.75);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: var(--space-10);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* Hero Stats Strip */
.hero__stats {
  position: relative;
  z-index: 1;
  background: var(--color-accent);
}

.hero__stats-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: var(--space-5) var(--container-pad);
}

.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-4) var(--space-10);
  flex: 1;
}

.hero__stat strong {
  font-family: var(--font-heading);
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
}

.hero__stat span {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: rgba(255,255,255,.8);
  margin-top: var(--space-1);
}

.hero__stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.3);
  flex-shrink: 0;
}

/* ----------------------------------------------------------------
   9. ABOUT SECTION
---------------------------------------------------------------- */
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

/* Media */
.about__media {
  position: relative;
}

.about__img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: visible;
}

.about__img--main {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.about__img--float {
  position: absolute;
  bottom: -30px;
  right: -30px;
  width: 200px;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 5px solid var(--color-white);
  box-shadow: var(--shadow-lg);
}

.about__exp-badge {
  position: absolute;
  top: 30px;
  left: -20px;
  background: var(--color-accent);
  color: var(--color-white);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-glow);
}

.about__exp-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.about__exp-label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 4px;
  line-height: 1.3;
}

/* Content */
.about__desc {
  color: var(--color-text-light);
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.about__features {
  margin: var(--space-6) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.about__features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text);
}

.about__features li i {
  color: var(--color-success);
  font-size: var(--fs-md);
  flex-shrink: 0;
}

/* Counter Strip */
.counter-strip {
  background: var(--color-primary);
  margin-top: var(--space-20);
}

.counter-strip__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: var(--space-16) 0;
}

.counter-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-6) var(--space-4);
  border-right: 1px solid rgba(255,255,255,.08);
  text-align: center;
}
.counter-item:last-child { border-right: none; }

.counter-icon {
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.counter-num {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.counter-label {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: rgba(255,255,255,.55);
  letter-spacing: 0.5px;
}

/* ----------------------------------------------------------------
   10. SERVICES SECTION
---------------------------------------------------------------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: var(--trans-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}

.service-card:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(249,115,22,.3);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,.3);
}

.service-card:hover::before { transform: scaleX(1); }

.service-card__icon {
  width: 64px;
  height: 64px;
  background: rgba(249,115,22,.12);
  border: 1px solid rgba(249,115,22,.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: var(--color-accent);
  margin-bottom: var(--space-5);
  transition: var(--trans-base);
}

.service-card:hover .service-card__icon {
  background: var(--color-accent);
  color: var(--color-white);
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.service-card__desc {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.55);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.service-card__list {
  margin-bottom: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-card__list li {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.5);
  padding-left: var(--space-5);
  position: relative;
}

.service-card__list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-accent);
  transition: gap .2s ease;
}

.service-card__link:hover { gap: var(--space-3); }

/* ----------------------------------------------------------------
   11. PROJECTS SECTION
---------------------------------------------------------------- */
.projects__filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-10);
}

.filter-btn {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-gray-200);
  color: var(--color-text-light);
  background: transparent;
  transition: var(--trans-base);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(249,115,22,.3);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.project-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--trans-base);
}

.project-card.hidden {
  display: none;
}

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

.project-card__img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.project-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(15,23,42,.95) 0%,
    rgba(15,23,42,.5) 50%,
    transparent 100%
  );
  display: flex;
  align-items: flex-end;
  padding: var(--space-6);
  opacity: 0;
  transition: opacity .35s ease;
}

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

.project-card__info {
  transform: translateY(20px);
  transition: transform .35s ease .05s;
}
.project-card:hover .project-card__info {
  transform: translateY(0);
}

.project-card__cat {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-2);
}

.project-card__name {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-1);
}

.project-card__info p {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.7);
}

.projects__action {
  text-align: center;
  margin-top: var(--space-12);
}

/* ----------------------------------------------------------------
   12. CAPABILITIES SECTION
---------------------------------------------------------------- */
.capabilities__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

/* Reasons */
.reason-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.reason-item {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-5);
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  border-left: 4px solid transparent;
  transition: var(--trans-base);
}

.reason-item:hover {
  border-left-color: var(--color-accent);
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.reason-item__icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--color-white);
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(249,115,22,.3);
}

.reason-item__content h4 {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.reason-item__content p {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  line-height: 1.65;
}

/* Skill bars */
.skill-bars {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.skill-bar__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}

.skill-bar__header span:first-child {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
}

.skill-bar__pct {
  font-family: var(--font-heading);
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-accent);
}

.skill-bar__track {
  height: 8px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
  box-shadow: 0 0 10px rgba(249,115,22,.4);
}

/* Certifications */
.certifications {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: var(--trans-base);
}

.cert-item:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.cert-item i { color: var(--color-accent); transition: var(--trans-fast); }
.cert-item:hover i { color: var(--color-white); }

/* CTA Strip */
.cta-strip {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  margin-top: var(--space-20);
}

.cta-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  padding: var(--space-12) var(--container-pad);
}

.cta-strip__text h3 {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.cta-strip__text p {
  font-size: var(--fs-base);
  color: rgba(255,255,255,.75);
}

.cta-strip__actions {
  display: flex;
  gap: var(--space-4);
  flex-shrink: 0;
}

/* ----------------------------------------------------------------
   13. NEWS SECTION
---------------------------------------------------------------- */
.news__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.news-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  transition: var(--trans-base);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.news-card__img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.news-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.news-card:hover .news-card__img-wrap img {
  transform: scale(1.05);
}

.news-card__cat {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 3px 12px;
  border-radius: var(--radius-full);
}

.news-card__body {
  padding: var(--space-6);
}

.news-card__meta {
  display: flex;
  gap: var(--space-4);
  font-size: var(--fs-xs);
  color: var(--color-text-light);
  margin-bottom: var(--space-3);
}

.news-card__meta i { color: var(--color-accent); margin-right: 4px; }

.news-card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: var(--space-3);
  transition: var(--trans-fast);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card:hover .news-card__title { color: var(--color-accent); }

.news-card__excerpt {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  line-height: 1.65;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-accent);
  transition: gap .2s ease;
}
.news-card__link:hover { gap: var(--space-3); }

/* ----------------------------------------------------------------
   14. PARTNERS SECTION
---------------------------------------------------------------- */
.partners__slider-wrap {
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(
    to right,
    transparent,
    black 15%,
    black 85%,
    transparent
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    black 15%,
    black 85%,
    transparent
  );
}

.partners__slider {
  display: flex;
  gap: var(--space-6);
  animation: partnerScroll 22s linear infinite;
  width: max-content;
}

.partners__slider:hover {
  animation-play-state: paused;
}

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

.partner-logo {
  flex-shrink: 0;
  padding: var(--space-4) var(--space-6);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--trans-base);
  filter: grayscale(100%);
  opacity: .55;
}

.partner-logo:hover {
  filter: grayscale(0%);
  opacity: 1;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.partner-logo img {
  height: 50px;
  width: auto;
  object-fit: contain;
}

/* ----------------------------------------------------------------
   15. CONTACT / FORM SECTION
---------------------------------------------------------------- */
.contact {
  background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-16);
  align-items: start;
}

.contact__desc {
  font-size: var(--fs-base);
  color: var(--color-text-light);
  line-height: 1.75;
  margin: var(--space-6) 0;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-detail {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-detail__icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: var(--fs-base);
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(249,115,22,.25);
}

.contact-detail strong {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.contact-detail p {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  line-height: 1.5;
}

.contact-detail a:hover { color: var(--color-accent); }

.contact__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.social-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-light);
  font-size: var(--fs-base);
  transition: var(--trans-base);
}

.social-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(249,115,22,.35);
}

/* Form Styles */
.quote-form {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-gray-200);
}

.quote-form__title {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.quote-form__title i { color: var(--color-accent); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.form-group label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.required { color: var(--color-error); }

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-text);
  font-size: var(--fs-sm);
  transition: var(--trans-fast);
  outline: none;
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(249,115,22,.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-gray-400);
}

.form-group input.is-error,
.form-group select.is-error,
.form-group textarea.is-error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239,68,68,.08);
}

.form-error {
  font-size: var(--fs-xs);
  color: var(--color-error);
  min-height: 1em;
}

/* Checkbox */
.form-group--checkbox { flex-direction: row; align-items: flex-start; }

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  user-select: none;
}

.checkbox-label input[type="checkbox"] { display: none; }

.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  margin-top: 1px;
  transition: var(--trans-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
}

.checkbox-label input:checked + .checkmark {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.checkbox-label input:checked + .checkmark::after {
  content: '✓';
  color: white;
  font-size: 12px;
  font-weight: 700;
}

.checkbox-label a { color: var(--color-accent); font-weight: 600; }
.checkbox-label a:hover { text-decoration: underline; }

/* Form success */
.form-success {
  display: none;
  text-align: center;
  padding: var(--space-8);
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-lg);
  margin-top: var(--space-4);
}

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

.form-success i {
  font-size: 3rem;
  color: var(--color-success);
  display: block;
  margin-bottom: var(--space-3);
}

.form-success strong {
  display: block;
  font-size: var(--fs-lg);
  font-weight: 700;
  color: #166534;
  margin-bottom: var(--space-2);
}

.form-success p { font-size: var(--fs-sm); color: #166534; }

/* ----------------------------------------------------------------
   16. FOOTER
---------------------------------------------------------------- */
.footer { background: var(--color-primary); color: var(--color-white); }

.footer__main { padding: var(--space-20) 0 var(--space-12); }

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-10);
}

.footer__logo .logo-text__main { color: var(--color-white); }

.footer__about-desc {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.55);
  line-height: 1.75;
  margin: var(--space-5) 0;
  max-width: 300px;
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.5);
  font-size: var(--fs-sm);
  transition: var(--trans-base);
}

.footer__social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: var(--fs-base);
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--space-6);
  position: relative;
  padding-bottom: var(--space-3);
}

.footer__heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 36px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.55);
  transition: var(--trans-fast);
}

.footer__links a i { color: var(--color-accent); font-size: var(--fs-xs); transition: transform .2s; }
.footer__links a:hover { color: var(--color-accent); }
.footer__links a:hover i { transform: translateX(4px); }

.footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__contact-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--fs-sm);
  color: rgba(255,255,255,.55);
}

.footer__contact-list li i {
  color: var(--color-accent);
  margin-top: 3px;
  flex-shrink: 0;
  width: 16px;
}

.footer__contact-list a:hover { color: var(--color-accent); }

/* Footer Bottom */
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: var(--space-5) 0;
}

.footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__bottom p {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,.4);
}

.footer__bottom a {
  color: rgba(255,255,255,.55);
  transition: color .2s;
}
.footer__bottom a:hover { color: var(--color-accent); }

/* ----------------------------------------------------------------
   17. BACK TO TOP
---------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-base);
  box-shadow: 0 4px 20px rgba(249,115,22,.4);
  z-index: 900;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: var(--trans-base);
  border: none;
}

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

.back-to-top:hover {
  background: var(--color-accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(249,115,22,.5);
}

/* ----------------------------------------------------------------
   18. SCROLL REVEAL ANIMATIONS
---------------------------------------------------------------- */
.reveal-fade,
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 0;
  transition: opacity .7s ease, transform .7s ease;
  transition-delay: var(--delay, 0s);
}

.reveal-fade  { transform: none; }
.reveal-up    { transform: translateY(40px); }
.reveal-left  { transform: translateX(-50px); }
.reveal-right { transform: translateX(50px); }

.reveal-fade.in-view,
.reveal-up.in-view,
.reveal-left.in-view,
.reveal-right.in-view {
  opacity: 1;
  transform: none;
}

/* ----------------------------------------------------------------
   19. RESPONSIVE – TABLET (≤ 1024px)
---------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --header-h: 68px;
  }

  .section-title { font-size: var(--fs-3xl); }

  /* Header */
  .header__nav,
  .header__cta { display: none; }
  .hamburger { display: flex; }

  /* About */
  .about__inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  .about__img--float { display: none; }
  .about__exp-badge { left: 0; }

  /* Counter */
  .counter-strip__inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
  }

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

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

  /* Capabilities */
  .capabilities__inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

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

  /* Contact */
  .contact__inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

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

  /* CTA Strip */
  .cta-strip__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ----------------------------------------------------------------
   20. RESPONSIVE – MOBILE (≤ 640px)
---------------------------------------------------------------- */
@media (max-width: 640px) {
  :root {
    --topbar-h: 0px;
    --space-20: 3.5rem;
    --space-16: 3rem;
  }

  .topbar { display: none; }

  .section-title { font-size: var(--fs-2xl); }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }

  /* Hero Stats */
  .hero__stats-inner {
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: var(--space-4) var(--container-pad);
  }
  .hero__stat { padding: var(--space-3) var(--space-4); flex: 0 0 45%; }
  .hero__stat-divider { display: none; }
  .hero__stat strong { font-size: var(--fs-2xl); }

  /* Counter */
  .counter-strip__inner {
    grid-template-columns: repeat(2, 1fr);
  }
  .counter-num { font-size: var(--fs-3xl); }

  /* Services */
  .services__grid { grid-template-columns: 1fr; }

  /* Projects */
  .projects__grid { grid-template-columns: 1fr; }

  /* News */
  .news__grid { grid-template-columns: 1fr; }

  /* Form */
  .form-row { grid-template-columns: 1fr; }
  .quote-form { padding: var(--space-6); }

  /* Footer */
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }

  /* Projects filter */
  .projects__filters { gap: var(--space-2); }
  .filter-btn { font-size: var(--fs-xs); padding: 0.5rem 1rem; }

  /* CTA Strip */
  .cta-strip__actions { flex-direction: column; width: 100%; }
  .cta-strip__actions .btn { width: 100%; justify-content: center; }

  /* Capabilities */
  .certifications { justify-content: center; }

  /* Back to top */
  .back-to-top { bottom: var(--space-5); right: var(--space-5); }
}