/* ========================================================================
   EEBTP — Premium Construction & Infrastructure Company
   Main Stylesheet
   ======================================================================== */

/* ---------- 1. RESET & CUSTOM PROPERTIES ---------- */

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

:root {
  /* Brand Colours */
  --clr-navy:       #0a1628;
  --clr-navy-light: #111d32;
  --clr-blue:       #1976D2;
  --clr-blue-dark:  #1565C0;
  --clr-blue-light: #42A5F5;
  --clr-gold:       #d4943a;
  --clr-gold-dark:  #b87a2e;
  --clr-gold-light: #e2ad5e;
  --clr-white:      #ffffff;
  --clr-off-white:  #f7f8fa;
  --clr-grey-100:   #f0f2f5;
  --clr-grey-200:   #e2e5ea;
  --clr-grey-300:   #cfd3da;
  --clr-grey-500:   #6b7280;
  --clr-grey-700:   #374151;
  --clr-grey-900:   #111827;
  --clr-text:       #1e293b;
  --clr-text-muted: #64748b;
  --clr-danger:     #dc2626;
  --clr-success:    #16a34a;

  /* Typography */
  --ff-heading: 'DM Serif Display', Georgia, serif;
  --ff-body:    'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Spacing scale */
  --sp-xs:  .25rem;
  --sp-sm:  .5rem;
  --sp-md:  1rem;
  --sp-lg:  1.5rem;
  --sp-xl:  2rem;
  --sp-2xl: 3rem;
  --sp-3xl: 4rem;
  --sp-4xl: 6rem;
  --sp-5xl: 8rem;

  /* Radii */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-pill: 100px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.08), 0 4px 8px rgba(0,0,0,.04);
  --shadow-xl:  0 20px 50px rgba(0,0,0,.12), 0 8px 16px rgba(0,0,0,.06);

  /* Transitions */
  --transition: .3s ease;
  --transition-slow: .5s ease;

  /* Container */
  --container-max: 1280px;
  --container-px:  clamp(1rem, 4vw, 2rem);

  /* Header height */
  --header-h: 80px;
}

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

body {
  font-family: var(--ff-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--clr-text);
  background: var(--clr-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font: inherit;
  color: inherit;
}

/* ---------- 2. TYPOGRAPHY ---------- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--clr-grey-900);
}

h1 { font-size: clamp(2.25rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.35rem, 2.5vw, 1.85rem); }
h4 { font-size: clamp(1.15rem, 2vw, 1.45rem); }
h5 { font-size: clamp(1rem, 1.5vw, 1.2rem); }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--sp-md);
  color: var(--clr-text-muted);
}

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

.section__title {
  font-family: var(--ff-heading);
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 400;
  color: var(--clr-grey-900);
  margin-bottom: var(--sp-md);
  line-height: 1.15;
}

.section__subtitle {
  font-size: clamp(.95rem, 1.5vw, 1.125rem);
  color: var(--clr-text-muted);
  max-width: 620px;
  line-height: 1.7;
}

.section--dark .section__title,
.section--dark .section__subtitle,
.section--dark h2,
.section--dark h3,
.section--dark p {
  color: var(--clr-white);
}

.section--dark .section__subtitle {
  color: rgba(255,255,255,.82);
}

/* ---------- 3. LAYOUT ---------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

.section {
  padding: var(--sp-5xl) 0;
}

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

.section--grey {
  background: var(--clr-grey-100);
}

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

.section__header .section__subtitle {
  margin-left: auto;
  margin-right: auto;
}

.section__cta {
  text-align: center;
  margin-top: var(--sp-3xl);
}

/* ---------- 4. BUTTONS ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: .8rem 2rem;
  font-family: var(--ff-body);
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-align: center;
}

.btn--primary {
  background: var(--clr-blue);
  color: var(--clr-white);
  border-color: var(--clr-blue);
}

.btn--primary:hover {
  background: var(--clr-blue-dark);
  border-color: var(--clr-blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(25, 118, 210, .35);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(25, 118, 210, .25);
}

.btn--accent {
  background: var(--clr-gold);
  color: var(--clr-white);
  border-color: var(--clr-gold);
}

.btn--accent:hover {
  background: var(--clr-gold-dark);
  border-color: var(--clr-gold-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 148, 58, .35);
}

.btn--accent:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(212, 148, 58, .25);
}

.btn--outline {
  background: transparent;
  color: var(--clr-white);
  border-color: var(--clr-white);
}

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

.btn--outline:active {
  transform: translateY(0);
}

.btn--outline-dark {
  background: transparent;
  color: var(--clr-blue);
  border-color: var(--clr-blue);
}

.btn--outline-dark:hover {
  background: var(--clr-blue);
  color: var(--clr-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(25, 118, 210, .25);
}

.btn--outline-dark:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(25, 118, 210, .15);
}

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

/* ---------- 5. HEADER ---------- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(10, 22, 40, .72);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: all var(--transition);
}

.header--scrolled {
  background: rgba(10, 22, 40, .95);
  box-shadow: 0 4px 30px rgba(0,0,0,.2);
  height: 68px;
}

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

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  z-index: 1001;
}

.header__logo img {
  height: 42px;
  width: auto;
}

.header__logo-text {
  font-family: var(--ff-heading);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--clr-white);
  letter-spacing: .02em;
}

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

.nav__link {
  font-size: .9375rem;
  font-weight: 500;
  color: rgba(255,255,255,.78);
  transition: color var(--transition);
  position: relative;
  padding: .25rem 0;
}

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

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

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

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

.nav__link.active::after {
  width: 100%;
  background: var(--clr-gold);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  padding: .35rem .85rem;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-pill);
  color: rgba(255,255,255,.85);
  font-size: .8125rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  background: transparent;
}

.lang-toggle:hover {
  border-color: var(--clr-gold);
  color: var(--clr-gold);
}

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  z-index: 1001;
  cursor: pointer;
  background: none;
  border: none;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}

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

.nav__toggle.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

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

.nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.nav__overlay.open {
  opacity: 1;
  visibility: visible;
}

/* ---------- 6. HERO ---------- */

.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  background: var(--clr-navy);
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 1.2s ease, transform 1.2s ease;
  z-index: 1;
}

.hero__slide.active {
  opacity: 1;
  transform: scale(1);
  z-index: 2;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 22, 40, .82) 0%,
    rgba(10, 22, 40, .55) 50%,
    rgba(10, 22, 40, .70) 100%
  );
  z-index: 3;
}

.hero__content {
  position: relative;
  z-index: 5;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--header-h);
  padding-left: var(--container-px);
  padding-right: var(--container-px);
  max-width: 780px;
}

.hero__title {
  font-family: var(--ff-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  color: var(--clr-white);
  line-height: 1.08;
  margin-bottom: var(--sp-lg);
  animation: heroUp .9s ease both;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,.78);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: var(--sp-2xl);
  animation: heroUp .9s .15s ease both;
}

.hero__cta {
  display: flex;
  gap: var(--sp-md);
  flex-wrap: wrap;
  animation: heroUp .9s .3s ease both;
}

.hero__dots {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: var(--sp-sm);
}

.hero__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.35);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.hero__dot.active {
  background: var(--clr-gold);
  transform: scale(1.3);
}

/* ---------- 7. PAGE HERO ---------- */

.page-hero {
  position: relative;
  width: 100%;
  height: 360px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 22, 40, .88) 0%,
    rgba(10, 22, 40, .50) 60%,
    rgba(10, 22, 40, .40) 100%
  );
  z-index: 1;
}

.page-hero .container {
  position: relative;
  z-index: 2;
  padding-bottom: var(--sp-3xl);
}

.page-hero__title {
  font-family: var(--ff-heading);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  color: var(--clr-white);
  margin-bottom: var(--sp-sm);
}

.page-hero__subtitle {
  font-size: clamp(.95rem, 1.5vw, 1.1rem);
  color: rgba(255,255,255,.72);
  max-width: 540px;
  margin-bottom: var(--sp-md);
}

.page-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: .85rem;
  color: rgba(255,255,255,.55);
}

.page-hero__breadcrumb a {
  color: rgba(255,255,255,.7);
  transition: color var(--transition);
}

.page-hero__breadcrumb a:hover {
  color: var(--clr-gold);
}

.page-hero__breadcrumb span {
  color: var(--clr-gold);
  font-weight: 600;
}

/* ---------- 8. SERVICE CARDS ---------- */

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

.service-card {
  position: relative;
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl) var(--sp-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  overflow: hidden;
}

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

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

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

.service-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(25, 118, 210, .08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-lg);
  font-size: 1.4rem;
  color: var(--clr-blue);
  transition: all var(--transition);
}

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

.service-card__title {
  font-family: var(--ff-heading);
  font-size: 1.2rem;
  color: var(--clr-grey-900);
  margin-bottom: var(--sp-sm);
}

.service-card__desc {
  font-size: .9rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
}

/* ---------- 9. PROJECT CARDS ---------- */

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

.project-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.project-card__image {
  position: relative;
  height: 260px;
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}

.project-card:hover .project-card__image img {
  transform: scale(1.06);
}

.project-card__category {
  position: absolute;
  top: var(--sp-md);
  left: var(--sp-md);
  padding: .3rem .9rem;
  background: var(--clr-blue);
  color: var(--clr-white);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-radius: var(--radius-pill);
  z-index: 2;
}

.project-card__body {
  padding: var(--sp-xl) var(--sp-xl) var(--sp-2xl);
}

.project-card__title {
  font-family: var(--ff-heading);
  font-size: 1.35rem;
  color: var(--clr-grey-900);
  margin-bottom: var(--sp-md);
}

.project-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-lg);
  margin-bottom: var(--sp-lg);
}

.project-card__meta-item {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: .85rem;
  color: var(--clr-text-muted);
}

.project-card__meta-item i {
  color: var(--clr-blue);
  font-size: .9rem;
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-blue);
  transition: gap var(--transition), color var(--transition);
}

.project-card__link:hover {
  gap: var(--sp-md);
  color: var(--clr-blue-dark);
}

/* ---------- 10. STRENGTHS ---------- */

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

.strength-card {
  text-align: center;
  padding: var(--sp-2xl) var(--sp-lg);
}

.strength-card__number {
  font-family: var(--ff-heading);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--clr-gold);
  line-height: 1;
  margin-bottom: var(--sp-sm);
}

.strength-card__label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-grey-900);
  margin-bottom: var(--sp-xs);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.section--dark .strength-card__label {
  color: var(--clr-white);
}

.strength-card__desc {
  font-size: .875rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

.section--dark .strength-card__desc {
  color: rgba(255,255,255,.75);
}

/* ---------- 11. CTA SECTION ---------- */

.cta-section {
  background: linear-gradient(135deg, var(--clr-blue) 0%, var(--clr-blue-dark) 50%, #0d47a1 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
  pointer-events: none;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,.03);
  pointer-events: none;
}

.cta-section__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-section__title {
  font-family: var(--ff-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  color: var(--clr-white);
  margin-bottom: var(--sp-md);
}

.cta-section__desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,.82);
  margin-bottom: var(--sp-2xl);
  line-height: 1.7;
}

/* ---------- 12. ABOUT PAGE ---------- */

.about-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4xl);
  align-items: center;
}

.about-overview__text h2 {
  margin-bottom: var(--sp-lg);
}

.about-overview__text p {
  margin-bottom: var(--sp-md);
}

.about-overview__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

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

.vm-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

.vm-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.vm-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(25, 118, 210, .08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-lg);
  font-size: 1.4rem;
  color: var(--clr-blue);
}

.vm-card h3 {
  margin-bottom: var(--sp-md);
}

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

.value-card {
  background: var(--clr-white);
  border-radius: var(--radius-md);
  padding: var(--sp-xl);
  border-left: 4px solid var(--clr-gold);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.value-card h4 {
  margin-bottom: var(--sp-sm);
  color: var(--clr-grey-900);
}

.value-card p {
  font-size: .9rem;
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--sp-xl);
}

.capability-card {
  text-align: center;
  padding: var(--sp-xl) var(--sp-md);
}

.capability-card__number {
  font-family: var(--ff-heading);
  font-size: clamp(2rem, 4vw, 2.75rem);
  color: var(--clr-gold);
  line-height: 1;
  margin-bottom: var(--sp-xs);
}

.capability-card p {
  font-size: .85rem;
  font-weight: 600;
  color: rgba(255,255,255,.7);
  text-transform: uppercase;
  letter-spacing: .04em;
}

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

.office-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.office-card__badge {
  display: inline-block;
  padding: .2rem .7rem;
  background: rgba(25, 118, 210, .08);
  color: var(--clr-blue);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-radius: var(--radius-pill);
  margin-bottom: var(--sp-md);
}

.office-card h4 {
  margin-bottom: var(--sp-sm);
}

.office-card p {
  font-size: .875rem;
}

.csr-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
  align-items: center;
}

.csr-block img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

/* ---------- 13. SERVICES PAGE ---------- */

.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4xl);
  align-items: center;
  padding: var(--sp-4xl) 0;
  border-bottom: 1px solid var(--clr-grey-200);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail:nth-child(even) .service-detail__image {
  order: -1;
}

.service-detail__header {
  margin-bottom: var(--sp-xl);
}

.service-detail__header h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  margin-bottom: var(--sp-md);
}

.service-detail__icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(25, 118, 210, .08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--clr-blue);
  margin-bottom: var(--sp-lg);
}

.service-detail__list {
  list-style: none;
  padding: 0;
  margin-top: var(--sp-lg);
}

.service-detail__list li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: var(--sp-sm);
  font-size: .925rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

.service-detail__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .55rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-blue);
}

.service-detail__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

/* ---------- 14. FILTER BAR ---------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  justify-content: center;
  margin-bottom: var(--sp-3xl);
}

.filter-btn {
  padding: .5rem 1.4rem;
  border: 2px solid var(--clr-grey-200);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--clr-text-muted);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover {
  border-color: var(--clr-blue);
  color: var(--clr-blue);
}

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

/* ---------- 15. PROJECT DETAIL ---------- */

.project-detail__back {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-blue);
  margin-bottom: var(--sp-2xl);
  transition: gap var(--transition), color var(--transition);
}

.project-detail__back:hover {
  gap: var(--sp-md);
  color: var(--clr-blue-dark);
}

.project-detail__badge {
  display: inline-block;
  padding: .3rem .9rem;
  background: var(--clr-blue);
  color: var(--clr-white);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-radius: var(--radius-pill);
  margin-bottom: var(--sp-md);
}

.project-detail__title {
  font-family: var(--ff-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  color: var(--clr-grey-900);
  margin-bottom: var(--sp-md);
}

.project-detail__hero {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--sp-3xl);
  box-shadow: var(--shadow-lg);
}

.project-detail__hero img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.project-detail__meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-xl);
  background: var(--clr-grey-100);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  margin-bottom: var(--sp-3xl);
}

.project-detail__section-title {
  font-family: var(--ff-heading);
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  color: var(--clr-grey-900);
  margin-bottom: var(--sp-lg);
}

.project-detail__scope {
  color: var(--clr-text-muted);
  line-height: 1.7;
}

.project-detail__list {
  list-style: none;
  padding: 0;
}

.project-detail__list li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: var(--sp-md);
  font-size: .95rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

.project-detail__not-found {
  text-align: center;
  font-size: 1.1rem;
  color: var(--clr-text-muted);
  padding: var(--sp-4xl) 0;
}

@media (max-width: 768px) {
  .project-detail__meta-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .project-detail__hero img {
    height: 280px;
  }
}

@media (max-width: 480px) {
  .project-detail__meta-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-md);
  }
}

.project-detail__header {
  margin-bottom: var(--sp-3xl);
}

.project-detail__header h2 {
  margin-bottom: var(--sp-md);
}

.project-detail__meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-xl);
  background: var(--clr-grey-100);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  margin-bottom: var(--sp-3xl);
}

.project-detail__meta-item {
  text-align: center;
}

.project-detail__meta-label {
  display: block;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 700;
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-xs);
}

.project-detail__meta-value {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-grey-900);
}

.project-detail__section {
  margin-bottom: var(--sp-3xl);
}

.project-detail__section h3 {
  margin-bottom: var(--sp-lg);
}

.challenge-list,
.solution-list {
  list-style: none;
  padding: 0;
}

.challenge-list li,
.solution-list li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: var(--sp-md);
  font-size: .95rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

.challenge-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--clr-gold);
  opacity: .7;
}

.solution-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: .5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--clr-blue);
  opacity: .7;
}

.project-gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-lg);
}

.project-gallery-grid img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

.project-gallery-grid img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-lg);
}

/* ---------- 16. GALLERY ---------- */

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

.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 22, 40, 0);
  transition: background var(--transition);
}

.gallery-item:hover::after {
  background: rgba(10, 22, 40, .18);
}

/* ---------- 17. LIGHTBOX ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox.open {
  display: flex;
}

.lightbox__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .92);
  backdrop-filter: blur(6px);
}

.lightbox__content {
  position: relative;
  z-index: 2001;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}

.lightbox__close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 2002;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: var(--clr-white);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  transition: background var(--transition);
}

.lightbox__close:hover {
  background: rgba(255,255,255,.25);
}

.lightbox__prev,
.lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2002;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: var(--clr-white);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  transition: background var(--transition);
}

.lightbox__prev { left: 1.5rem; }
.lightbox__next { right: 1.5rem; }

.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(255,255,255,.25);
}

.lightbox__counter {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2002;
  color: rgba(255,255,255,.7);
  font-size: .875rem;
  font-weight: 600;
}

/* ---------- 18. CONTACT ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--sp-3xl);
}

.contact-form-wrapper {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl);
  box-shadow: var(--shadow-md);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.form-group--full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--clr-grey-700);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid var(--clr-grey-200);
  border-radius: var(--radius-md);
  background: var(--clr-off-white);
  font-size: .9375rem;
  color: var(--clr-text);
  transition: all var(--transition);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--clr-grey-500);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--clr-blue);
  background: var(--clr-white);
  box-shadow: 0 0 0 3px rgba(25, 118, 210, .1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-error {
  color: var(--clr-danger);
  font-size: .8rem;
  font-weight: 500;
  margin-top: var(--sp-xs);
  display: none;
}

.form-error.visible {
  display: block;
}

.form-success {
  background: rgba(22, 163, 74, .08);
  border: 1px solid rgba(22, 163, 74, .25);
  color: var(--clr-success);
  padding: var(--sp-md) var(--sp-lg);
  border-radius: var(--radius-md);
  font-size: .9rem;
  font-weight: 500;
  text-align: center;
  display: none;
  grid-column: 1 / -1;
}

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xl);
}

.contact-info__card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  box-shadow: var(--shadow-sm);
}

.contact-info__card h3 {
  margin-bottom: var(--sp-lg);
  font-size: 1.15rem;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-md);
  margin-bottom: var(--sp-md);
  font-size: .9rem;
  color: var(--clr-text-muted);
}

.contact-info__item:last-child {
  margin-bottom: 0;
}

.contact-info__item i {
  color: var(--clr-blue);
  font-size: 1.1rem;
  margin-top: .15rem;
  flex-shrink: 0;
}

.contact-info__office {
  background: var(--clr-grey-100);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  margin-bottom: var(--sp-md);
}

.contact-info__office:last-child {
  margin-bottom: 0;
}

.contact-info__office h4 {
  margin-bottom: var(--sp-sm);
  font-size: 1rem;
}

.map-placeholder {
  width: 100%;
  height: 280px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.map-placeholder iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ---------- 19. FOOTER ---------- */

.footer {
  background: var(--clr-navy);
  color: rgba(255,255,255,.7);
  padding-top: var(--sp-4xl);
}

.footer__inner {
  padding-bottom: var(--sp-3xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: var(--sp-2xl);
}

.footer__brand {
  padding-right: var(--sp-xl);
}

.footer__brand-name {
  font-family: var(--ff-heading);
  font-size: 1.5rem;
  color: var(--clr-white);
  margin-bottom: var(--sp-xs);
}

.footer__tagline {
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--clr-gold);
  font-weight: 700;
  margin-bottom: var(--sp-lg);
}

.footer__desc {
  font-size: .875rem;
  line-height: 1.7;
  color: rgba(255,255,255,.75);
}

.footer h4 {
  font-family: var(--ff-body);
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--clr-white);
  margin-bottom: var(--sp-lg);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--sp-sm);
}

.footer__links a {
  font-size: .875rem;
  color: rgba(255,255,255,.72);
  transition: color var(--transition), padding-left var(--transition);
}

.footer__links a:hover {
  color: var(--clr-gold);
  padding-left: 4px;
}

.footer__contact li {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-sm);
  margin-bottom: var(--sp-md);
  font-size: .875rem;
  color: rgba(255,255,255,.72);
}

.footer__contact li i {
  color: var(--clr-gold);
  margin-top: .2rem;
  flex-shrink: 0;
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: var(--sp-lg) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-md);
  font-size: .8rem;
  color: rgba(255,255,255,.6);
}

.footer__bottom a {
  color: rgba(255,255,255,.65);
  transition: color var(--transition);
}

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

/* ---------- 20. ANIMATIONS ---------- */

@keyframes heroUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}

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

/* ---------- 21. SECTION HEADER (extended) ---------- */

.section__header .section__title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--clr-gold);
  margin: var(--sp-md) auto 0;
  border-radius: 2px;
}

.section__header--left {
  text-align: left;
}

.section__header--left .section__title::after {
  margin-left: 0;
}

.section__header--left .section__subtitle {
  margin-left: 0;
}

/* ---------- 22. NAV MOBILE ---------- */

@media (max-width: 1024px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    background: var(--clr-navy);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: calc(var(--header-h) + var(--sp-xl)) var(--sp-2xl) var(--sp-2xl);
    gap: 0;
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 1000;
    box-shadow: -10px 0 40px rgba(0,0,0,.3);
    overflow-y: auto;
  }

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

  .nav__link {
    font-size: 1.1rem;
    padding: var(--sp-md) 0;
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,.06);
    color: rgba(255,255,255,.8);
  }

  .nav__link::after {
    display: none;
  }

  .nav__link.active {
    color: var(--clr-gold);
  }

  .lang-toggle {
    margin-top: var(--sp-lg);
  }
}

/* ---------- 23. RESPONSIVE ---------- */

/* Tablet - 1024px */
@media (max-width: 1024px) {
  :root {
    --header-h: 70px;
  }

  .section {
    padding: var(--sp-4xl) 0;
  }

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

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

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

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

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

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

  .about-overview {
    gap: var(--sp-2xl);
  }

  .service-detail {
    gap: var(--sp-2xl);
  }
}

/* Tablet portrait - 768px */
@media (max-width: 768px) {
  :root {
    --header-h: 64px;
  }

  .section {
    padding: var(--sp-3xl) 0;
  }

  .hero {
    min-height: 500px;
  }

  .hero__title {
    font-size: clamp(2rem, 5vw, 3rem);
  }

  .hero__content {
    max-width: 100%;
  }

  .page-hero {
    height: 300px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-lg);
  }

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

  .strengths-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-md);
  }

  .about-overview {
    grid-template-columns: 1fr;
  }

  .about-overview__image {
    order: -1;
    max-height: 350px;
  }

  .vision-mission-grid {
    grid-template-columns: 1fr;
  }

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

  .capabilities-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-md);
  }

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

  .service-detail {
    grid-template-columns: 1fr;
    gap: var(--sp-2xl);
    padding: var(--sp-3xl) 0;
  }

  .service-detail:nth-child(even) .service-detail__image {
    order: 0;
  }

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

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

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

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

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

  .form-group--full {
    grid-column: 1;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--sp-2xl);
  }

  .footer__brand {
    padding-right: 0;
  }

  .footer__bottom {
    justify-content: center;
    text-align: center;
  }

  .csr-block {
    grid-template-columns: 1fr;
    gap: var(--sp-xl);
  }

  .lightbox__prev,
  .lightbox__next {
    width: 42px;
    height: 42px;
    font-size: 1rem;
  }

  .lightbox__prev { left: .75rem; }
  .lightbox__next { right: .75rem; }

  .lightbox__close {
    top: .75rem;
    right: .75rem;
    width: 40px;
    height: 40px;
  }

  .hero__cta {
    flex-direction: column;
    align-items: flex-start;
  }

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

/* Mobile - 480px */
@media (max-width: 480px) {
  :root {
    --header-h: 60px;
  }

  .section {
    padding: var(--sp-2xl) 0;
  }

  .hero {
    min-height: 440px;
  }

  .hero__title {
    font-size: 1.85rem;
  }

  .hero__subtitle {
    font-size: .95rem;
  }

  .page-hero {
    height: 260px;
  }

  .page-hero__title {
    font-size: 1.6rem;
  }

  .btn {
    padding: .7rem 1.5rem;
    font-size: .875rem;
  }

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

  .strength-card {
    padding: var(--sp-lg) var(--sp-md);
  }

  .strength-card__number {
    font-size: 2rem;
  }

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

  .project-card__image {
    height: 200px;
  }

  .project-detail__meta {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-md);
  }

  .project-gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-sm);
  }

  .filter-bar {
    gap: var(--sp-xs);
  }

  .filter-btn {
    padding: .4rem 1rem;
    font-size: .8rem;
  }

  .contact-form-wrapper {
    padding: var(--sp-lg);
  }

  .vm-card {
    padding: var(--sp-lg);
  }

  .cta-section__title {
    font-size: 1.5rem;
  }

  .section__title {
    font-size: 1.55rem;
  }

  .map-placeholder {
    height: 200px;
  }

  .nav__menu {
    width: 100%;
    max-width: 100vw;
  }

  .hero__dots {
    bottom: 1.5rem;
  }

  .lightbox__content {
    max-width: 95vw;
  }
}

/* ---------- UTILITY ---------- */

.text-center { text-align: center; }
.text-gold   { color: var(--clr-gold); }
.text-blue   { color: var(--clr-blue); }
.text-white  { color: var(--clr-white); }
.mt-0  { margin-top: 0; }
.mt-1  { margin-top: var(--sp-md); }
.mt-2  { margin-top: var(--sp-xl); }
.mt-3  { margin-top: var(--sp-2xl); }
.mb-0  { margin-bottom: 0; }
.mb-1  { margin-bottom: var(--sp-md); }
.mb-2  { margin-bottom: var(--sp-xl); }
.mb-3  { margin-bottom: var(--sp-2xl); }

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--clr-grey-100);
}

::-webkit-scrollbar-thumb {
  background: var(--clr-grey-300);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-grey-500);
}

/* Selection */
::selection {
  background: rgba(25, 118, 210, .15);
  color: var(--clr-navy);
}

/* Focus visible for accessibility */
:focus-visible {
  outline: 2px solid var(--clr-blue);
  outline-offset: 2px;
}

/* Body scroll lock when mobile menu is open */
body.nav-open {
  overflow: hidden;
}

/* Smooth image loading */
img {
  opacity: 1;
  transition: opacity .3s ease;
}

img[loading="lazy"] {
  opacity: 0;
}

img[loading="lazy"].loaded,
img[loading="lazy"]:not([src=""]) {
  opacity: 1;
}

/* ---------- SCROLL TO TOP ---------- */

.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--clr-blue);
  color: var(--clr-white);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--clr-blue-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.scroll-top:active {
  transform: translateY(0);
}

/* ---------- WHATSAPP FLOAT ---------- */

.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  z-index: 900;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #25D366;
  color: var(--clr-white);
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 15px rgba(37, 211, 102, .4);
  transition: all var(--transition);
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1) translateY(-3px);
  box-shadow: 0 6px 25px rgba(37, 211, 102, .5);
}

/* ---------- FOOTER SOCIAL LINKS ---------- */

.footer__socials {
  display: flex;
  gap: var(--sp-md);
  margin-top: var(--sp-lg);
}

.footer__socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.7);
  font-size: 1rem;
  transition: all var(--transition);
}

.footer__socials a:hover {
  background: var(--clr-gold);
  color: var(--clr-white);
  transform: translateY(-2px);
}

/* ---------- BUTTON LOADING STATE ---------- */

.btn--loading {
  pointer-events: none;
  opacity: .7;
  position: relative;
}

.btn--loading::after {
  content: '';
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: var(--clr-white);
  border-radius: 50%;
  animation: btnSpin .6s linear infinite;
  margin-left: var(--sp-sm);
}

@keyframes btnSpin {
  to { transform: rotate(360deg); }
}

/* ---------- RESPONSIVE: FLOAT BUTTONS ---------- */

@media (max-width: 480px) {
  .scroll-top {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .whatsapp-float {
    bottom: 1.25rem;
    left: 1.25rem;
    width: 48px;
    height: 48px;
    font-size: 1.4rem;
  }
}