/* ==========================================================
   RLD GLOBAL – CORPORATE WEBSITE STYLESHEET
   Domain: rldglobal.sg
   Color System:
     Primary Navy   : #0F2747
     Secondary Blue : #1F4E8C
     Accent Yellow  : #F4C400
     White          : #FFFFFF
     Light BG       : #F7F9FC
     Border Gray    : #D9E1EC
     Text Gray      : #4A5568
   ========================================================== */

/* ============================================================
   0. CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================================ */
:root {
  --color-navy:       #0F2747;
  --color-navy-dark:  #091b33;
  --color-blue:       #1F4E8C;
  --color-blue-light: #2563c4;
  --color-accent:     #F4C400;
  --color-accent-dark:#d4a800;
  --color-white:      #FFFFFF;
  --color-bg-light:   #F7F9FC;
  --color-border:     #D9E1EC;
  --color-text:       #1a202c;
  --color-text-gray:  #4A5568;
  --color-text-muted: #718096;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --shadow-sm: 0 1px 3px rgba(15,39,71,.08), 0 1px 2px rgba(15,39,71,.06);
  --shadow-md: 0 4px 16px rgba(15,39,71,.10), 0 2px 6px rgba(15,39,71,.06);
  --shadow-lg: 0 12px 40px rgba(15,39,71,.15), 0 4px 12px rgba(15,39,71,.08);
  --shadow-xl: 0 24px 60px rgba(15,39,71,.20);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1200px;
  --container-pad: 24px;

  --header-h: 72px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; }

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

.text-white    { color: var(--color-white) !important; }
.text-white-70 { color: rgba(255,255,255,0.75) !important; }
.text-accent   { color: var(--color-accent) !important; }
.text-navy     { color: var(--color-navy) !important; }

.mt-4 { margin-top: 1rem; }
.btn-block { width: 100%; }

/* ============================================================
   3. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  justify-content: center;
}

.btn-lg  { padding: 15px 36px; font-size: 1rem; border-radius: 10px; }
.btn-sm  { padding: 8px 20px;  font-size: 0.85rem; }

.btn-primary {
  background: var(--color-accent);
  color: var(--color-navy);
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(244,196,0,.35);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-navy);
  border-color: var(--color-accent);
}
.btn-accent:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(244,196,0,.4);
}

.btn-outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

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

/* ============================================================
   4. HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(15, 39, 71, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(15, 39, 71, 0.98);
  box-shadow: var(--shadow-lg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 32px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--color-white);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  background: var(--color-accent);
  color: var(--color-navy);
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 1rem;
  letter-spacing: 0.05em;
}

.logo-text { letter-spacing: 0.02em; }

/* Nav */
.main-nav { flex: 1; display: flex; justify-content: center; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: block;
  padding: 6px 16px;
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 6px;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 16px; right: 16px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  transition: background var(--transition-fast);
}

.hamburger:hover { background: rgba(255,255,255,0.1); }

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: absolute;
  top: var(--header-h);
  left: 0; right: 0;
  background: var(--color-navy-dark);
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px var(--container-pad) 28px;
  transform: translateY(-10px);
  opacity: 0;
  transition: all var(--transition);
  pointer-events: none;
}

.mobile-menu.open {
  display: block;
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.mobile-nav-list { display: flex; flex-direction: column; gap: 4px; }

.mobile-nav-link {
  display: block;
  padding: 12px 16px;
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  font-weight: 500;
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
  background: rgba(255,255,255,0.08);
  color: var(--color-white);
}

/* ============================================================
   5. HERO SECTION
   ============================================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-navy);
  background-image: url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  padding-top: var(--header-h);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(9, 27, 51, 0.88) 0%,
    rgba(15, 39, 71, 0.75) 50%,
    rgba(31, 78, 140, 0.65) 100%
  );
  z-index: 1;
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding-top: 60px;
  padding-bottom: 120px;
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(244,196,0,0.15);
  border: 1px solid rgba(244,196,0,0.35);
  color: var(--color-accent);
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-title .highlight {
  color: var(--color-accent);
  position: relative;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.8);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

/* Hero Stats */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: 0 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.65);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.2);
  flex-shrink: 0;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: scrollBounce 1.8s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(10px); opacity: 0.4; }
}

/* ============================================================
   6. SECTIONS – SHARED
   ============================================================ */
.section {
  padding: 96px 0;
}

.section-light  { background: var(--color-bg-light); }
.section-white  { background: var(--color-white); }
.section-navy   { background: var(--color-navy); }

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section-header-light .section-desc { color: rgba(255,255,255,0.75); }

.section-tag {
  display: inline-block;
  background: rgba(31,78,140,0.1);
  color: var(--color-blue);
  border: 1px solid rgba(31,78,140,0.2);
  padding: 5px 16px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-tag-gold {
  background: rgba(244,196,0,0.15);
  color: var(--color-accent);
  border-color: rgba(244,196,0,0.3);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-title.text-white { color: var(--color-white) !important; }

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-gray);
  line-height: 1.7;
}

/* ============================================================
   7. ABOUT SECTION – CARDS
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.about-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

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

.about-card-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-navy), var(--color-blue));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.about-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 12px;
  line-height: 1.3;
}

.about-card-text {
  font-size: 0.9rem;
  color: var(--color-text-gray);
  line-height: 1.65;
}

/* ============================================================
   8. WHY RLD SECTION
   ============================================================ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  position: relative;
  transition: all var(--transition);
}

.why-card:hover {
  background: rgba(255,255,255,0.09);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
  border-color: rgba(244,196,0,0.3);
}

.why-number {
  font-size: 3rem;
  font-weight: 900;
  color: rgba(255,255,255,0.07);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.why-icon {
  width: 48px;
  height: 48px;
  background: rgba(244,196,0,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.2rem;
  margin-bottom: 20px;
}

.why-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
  line-height: 1.3;
}

.why-card p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.68);
  line-height: 1.65;
}

/* ============================================================
   9. BUSINESS AREAS SECTION
   ============================================================ */
.business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.business-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.business-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.business-card-image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.business-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.business-card:hover .business-card-image img {
  transform: scale(1.06);
}

.business-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(15,39,71,0.85));
  display: flex;
  align-items: flex-end;
  padding: 20px;
  color: var(--color-accent);
  font-size: 2rem;
  transition: all var(--transition);
}

.business-card-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.business-tag {
  display: inline-block;
  background: rgba(31,78,140,0.1);
  color: var(--color-blue);
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  align-self: flex-start;
}

.business-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.3;
}

.business-card-text {
  font-size: 0.88rem;
  color: var(--color-text-gray);
  line-height: 1.65;
  flex: 1;
}

.business-feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.business-feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--color-text-gray);
  font-weight: 500;
}

.business-feature-list li i {
  color: var(--color-blue);
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* ============================================================
   10. GLOBAL PROJECTS SECTION
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.project-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

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

.project-flag {
  font-size: 2.4rem;
  line-height: 1;
}

.project-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.project-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.status-live        { background: rgba(16,185,129,.12); color: #059669; }
.status-progress    { background: rgba(245,158,11,.12); color: #d97706; }
.status-partnership { background: rgba(99,102,241,.12); color: #4f46e5; }

.project-card-title    { font-size: 1.15rem; font-weight: 700; color: var(--color-navy); }
.project-card-subtitle { font-size: 0.82rem; color: var(--color-blue); font-weight: 600; letter-spacing: 0.02em; }
.project-card-desc     { font-size: 0.85rem; color: var(--color-text-gray); line-height: 1.6; flex: 1; }

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  color: var(--color-text-gray);
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
}

/* Coverage Bar */
.coverage-bar {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.coverage-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.coverage-countries {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.coverage-countries span {
  font-size: 0.9rem;
  color: var(--color-text-gray);
  font-weight: 500;
}

/* ============================================================
   11. CONTACT SECTION
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 48px;
  align-items: start;
}

/* Contact Info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-info-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 20px;
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  background: rgba(244,196,0,0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-info-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.contact-info-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  transition: color var(--transition-fast);
}

.contact-info-value:hover { color: var(--color-accent); }

.contact-social {
  display: flex;
  gap: 12px;
  padding-top: 4px;
}

.social-btn {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.75);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

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

/* Contact Form */
.contact-form-wrapper {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-navy);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-bg-light);
  transition: all var(--transition-fast);
  outline: none;
  appearance: none;
}

.form-input:focus {
  border-color: var(--color-blue);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(31,78,140,0.12);
}

.form-input::placeholder { color: var(--color-text-muted); }

.form-textarea {
  resize: vertical;
  min-height: 130px;
  line-height: 1.6;
}

.form-select { cursor: pointer; }

/* Form Alerts */
.form-alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
}

.form-alert-success {
  background: rgba(16,185,129,.1);
  border: 1px solid rgba(16,185,129,.3);
  color: #065f46;
}

.form-alert-error {
  background: rgba(239,68,68,.1);
  border: 1px solid rgba(239,68,68,.3);
  color: #7f1d1d;
}

.form-alert i { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }

/* ============================================================
   12. FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-navy-dark);
  padding: 80px 0 0;
  color: rgba(255,255,255,0.75);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand { display: flex; flex-direction: column; gap: 16px; }

.logo-footer .logo-text,
.logo-footer .logo-mark {
  color: var(--color-white);
}

.footer-brand-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social-link {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.65);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-navy);
  transform: translateY(-2px);
}

.footer-heading {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.footer-links { display: flex; flex-direction: column; gap: 10px; }

.footer-links a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}

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

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
}

.footer-contact-list li i {
  color: var(--color-accent);
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 0.83rem;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  color: rgba(255,255,255,0.45);
  transition: color var(--transition-fast);
}

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

/* ============================================================
   13. BACK TO TOP BUTTON
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-navy);
  color: var(--color-accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--transition);
  z-index: 900;
  pointer-events: none;
  border: 1px solid rgba(244,196,0,0.25);
}

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

.back-to-top:hover {
  background: var(--color-accent);
  color: var(--color-navy);
  transform: translateY(-3px);
}

/* ============================================================
   14. SCROLL-TRIGGERED ANIMATIONS (AOS-like)
   ============================================================ */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="300"] { transition-delay: 0.3s; }

/* ============================================================
   15. PARTICLES (canvas-less CSS particles)
   ============================================================ */
.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(244,196,0,0.6);
  border-radius: 50%;
  animation: particleFloat linear infinite;
  pointer-events: none;
}

@keyframes particleFloat {
  0%   { transform: translateY(100vh) scale(0); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(-20px) scale(1); opacity: 0; }
}

/* ============================================================
   16. RESPONSIVE – TABLET (≤1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .about-grid   { grid-template-columns: repeat(2, 1fr); }
  .why-grid     { grid-template-columns: repeat(2, 1fr); }
  .business-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid  { grid-template-columns: 1fr 1fr; gap: 36px; }

  .contact-layout { grid-template-columns: 1fr; gap: 36px; }
  .contact-info { flex-direction: row; flex-wrap: wrap; }
  .contact-info-card { flex: 1 1 220px; }

  .hamburger { display: flex; }
  .main-nav  { display: none; }
  .header-actions .btn:not(.hamburger) { display: none; }
}

/* ============================================================
   17. RESPONSIVE – MOBILE (≤768px)
   ============================================================ */
@media (max-width: 768px) {
  :root { --container-pad: 16px; }

  .section { padding: 72px 0; }

  .about-grid    { grid-template-columns: 1fr; }
  .why-grid      { grid-template-columns: 1fr; }
  .business-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid   { grid-template-columns: 1fr; gap: 32px; }

  .hero-stats    { gap: 0; flex-direction: row; }
  .stat-item     { padding: 0 20px; }

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

  .contact-form-wrapper { padding: 28px 20px; }

  .hero-cta-group { gap: 12px; }
  .hero-cta-group .btn { width: 100%; max-width: 280px; }

  .back-to-top { bottom: 20px; right: 16px; }

  .coverage-bar { flex-direction: column; align-items: flex-start; gap: 12px; }
  .coverage-countries { gap: 12px; }

  .footer-bottom { flex-direction: column; text-align: center; }

  .contact-info { flex-direction: column; }
}

/* ============================================================
   18. RESPONSIVE – SMALL MOBILE (≤480px)
   ============================================================ */
@media (max-width: 480px) {
  .projects-grid { grid-template-columns: 1fr; }
  .hero-stats    { flex-direction: column; gap: 16px; }
  .stat-divider  { width: 40px; height: 1px; }

  .hero-badge    { font-size: 0.75rem; padding: 6px 14px; }
}