/* ================================================================
   Oleg Technologies – styles.css
   Azure-inspired professional theme
   ================================================================ */

/* ----------------------------------------------------------------
   0. CSS Custom Properties (Design Tokens)
---------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --azure-blue:        #0078D4;
  --azure-blue-dark:   #004E8C;
  --azure-blue-light:  #50A0E0;
  --azure-cyan:        #00B4F0;
  --azure-teal:        #008575;

  /* Neutrals */
  --gray-900:  #0F1621;
  --gray-800:  #1A2332;
  --gray-700:  #243044;
  --gray-600:  #3D5068;
  --gray-500:  #607080;
  --gray-400:  #8A9BAC;
  --gray-300:  #B8C5D0;
  --gray-200:  #DDE4EA;
  --gray-100:  #EEF2F6;
  --gray-50:   #F7F9FC;
  --white:     #FFFFFF;

  /* Semantic */
  --text-primary:   var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted:     var(--gray-400);
  --bg-default:     var(--white);
  --bg-alt:         var(--gray-50);
  --border-color:   var(--gray-200);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #004E8C 0%, #0078D4 50%, #00B4F0 100%);
  --gradient-hero:    linear-gradient(160deg, #0A1628 0%, #0C2448 40%, #0D3366 70%, #0078D4 100%);
  --gradient-card:    linear-gradient(135deg, rgba(0,120,212,0.06) 0%, rgba(0,180,240,0.04) 100%);

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-lg:  0 12px 32px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-xl:  0 24px 64px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.08);
  --shadow-glow: 0 0 30px rgba(0,120,212,0.25);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.6;

  /* 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;

  /* Radius */
  --radius-sm:   0.375rem;
  --radius-md:   0.75rem;
  --radius-lg:   1rem;
  --radius-xl:   1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1200px;
  --section-py:    5rem;
  --navbar-height: 72px;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-default);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: var(--azure-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--azure-blue-dark); }
a:focus-visible {
  outline: 2px solid var(--azure-blue);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

ul { list-style: none; }

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

/* ----------------------------------------------------------------
   2. Layout Utilities
---------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

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

.section--alt {
  background-color: var(--bg-alt);
}

/* ----------------------------------------------------------------
   3. Typography Utilities
---------------------------------------------------------------- */
.section-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--azure-blue);
  background: rgba(0,120,212,0.1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid rgba(0,120,212,0.2);
  margin-bottom: var(--space-4);
}

.section-tag--light {
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.3);
}

.section-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl));
  font-weight: 800;
  line-height: var(--leading-tight);
  color: var(--gray-900);
  margin-bottom: var(--space-6);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-4);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ----------------------------------------------------------------
   4. Buttons
---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

/* Ripple effect */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn:hover::after { opacity: 1; }

.btn--sm  { padding: var(--space-2) var(--space-5); font-size: var(--text-sm); }
.btn--md  { padding: var(--space-3) var(--space-6); }
.btn--lg  { padding: var(--space-4) var(--space-8); font-size: var(--text-lg); }
.btn--full { width: 100%; }

.btn--primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0,120,212,0.35);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,120,212,0.45);
  color: var(--white);
}
.btn--primary:active { transform: translateY(0); }

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}
.btn--outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  transform: translateY(-2px);
  color: var(--white);
}

.btn--white {
  background: var(--white);
  color: var(--azure-blue-dark);
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.btn--white:hover {
  background: var(--gray-50);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  color: var(--azure-blue-dark);
}

/* ----------------------------------------------------------------
   5. Scroll Animations
---------------------------------------------------------------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* ----------------------------------------------------------------
   6. Navbar
---------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--transition-slow), box-shadow var(--transition-slow);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
}

.navbar.scrolled .navbar__link { color: var(--gray-700); }
.navbar.scrolled .navbar__link:hover { color: var(--azure-blue); }
.navbar.scrolled .navbar__logo img { filter: none; }

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* Logo container */
.navbar__logo {
  display: flex;
  align-items: center;
  border-radius: var(--radius-md);
  transition: background var(--transition-slow), border-color var(--transition-slow), padding var(--transition-slow);
}
/* Slight rounded corners on logo in all states */
.navbar__logo img {
  border-radius: var(--radius-sm);
}

.navbar__logo img {
  height: 70px;
  width: auto;
  display: block;
  filter: none;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.navbar__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  position: relative;
  padding-bottom: 2px;
}
.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--azure-cyan);
  transition: width var(--transition-base);
  border-radius: var(--radius-full);
}
.navbar__link:hover::after,
.navbar__link.active::after { width: 100%; }

.navbar__actions { display: flex; align-items: center; gap: var(--space-4); }

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}
.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}
.navbar.scrolled .navbar__hamburger span { background: var(--gray-800); }
.navbar__hamburger[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.navbar__hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.navbar__hamburger[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ----------------------------------------------------------------
   7. Hero Section
---------------------------------------------------------------- */
.hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: var(--navbar-height);
}

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

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}
.shape--1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,120,212,0.35) 0%, transparent 70%);
  top: -200px; right: -100px;
  animation: float-shape 12s ease-in-out infinite;
}
.shape--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,180,240,0.25) 0%, transparent 70%);
  bottom: -100px; left: -100px;
  animation: float-shape 16s ease-in-out infinite reverse;
}
.shape--3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0,133,117,0.2) 0%, transparent 70%);
  top: 40%; left: 40%;
  animation: float-shape 20s ease-in-out infinite 3s;
}

@keyframes float-shape {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -20px) scale(1.05); }
  66%       { transform: translate(-20px, 30px) scale(0.95); }
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding-block: var(--space-20);
  max-width: 900px;
}

.hero__logo-mark {
  width: 110px;
  height: 120px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  background: rgba(0,184,216,0.08);
  border: 1px solid rgba(0,200,232,0.22);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  animation: pulse-glow 3s ease-in-out infinite;
}
/* Scale icon to fit neatly inside the container */
.hero__logo-mark img { width: 90px; height: auto; filter: none; }

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(0,120,212,0.3); }
  50%       { box-shadow: 0 0 40px rgba(0,180,240,0.5); }
}

.hero__headline {
  font-size: clamp(var(--text-3xl), 5.5vw, var(--text-6xl));
  font-weight: 800;
  line-height: var(--leading-tight);
  color: var(--white);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero__sub {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: rgba(255,255,255,0.75);
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: var(--leading-normal);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-12);
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  backdrop-filter: blur(8px);
}
.badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--azure-cyan);
  border-radius: 50%;
  flex-shrink: 0;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.6);
  animation: bounce 2s infinite;
  transition: color var(--transition-fast);
  z-index: 1;
}
.hero__scroll:hover { color: var(--white); }

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

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

.about__text .section-title { margin-bottom: var(--space-5); }

.about__text p {
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  font-size: var(--text-lg);
}

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

.about__list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--gray-700);
}

.icon--check {
  width: 20px; height: 20px;
  flex-shrink: 0;
  color: var(--azure-blue);
  background: rgba(0,120,212,0.1);
  border-radius: 50%;
  padding: 2px;
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.stat-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-card__number {
  display: block;
  font-size: var(--text-5xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-card__plus {
  font-size: var(--text-3xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-card__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

/* ----------------------------------------------------------------
   9. Services Section
---------------------------------------------------------------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.service-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-slow);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
  border-radius: var(--radius-full);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,120,212,0.3);
}
.service-card:hover::before { opacity: 1; }
.service-card:hover::after  { transform: scaleX(1); }

.service-card__icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(0,120,212,0.1) 0%, rgba(0,180,240,0.08) 100%);
  border: 1px solid rgba(0,120,212,0.15);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  transition: background var(--transition-base), border-color var(--transition-base);
}
.service-card__icon svg {
  width: 28px; height: 28px;
  color: var(--azure-blue);
}
.service-card:hover .service-card__icon {
  background: linear-gradient(135deg, rgba(0,120,212,0.2) 0%, rgba(0,180,240,0.15) 100%);
  border-color: rgba(0,120,212,0.3);
}

.service-card__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
  position: relative;
}

.service-card__desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  position: relative;
  margin-bottom: var(--space-5);
}

.service-card__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--azure-blue);
  background: rgba(0,120,212,0.08);
  border: 1px solid rgba(0,120,212,0.15);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  position: relative;
}

/* ----------------------------------------------------------------
   10. Why Us Section
---------------------------------------------------------------- */
.why-us__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.why-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
}
.why-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}
.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.why-card:hover::before { transform: scaleX(1); }

.why-card__icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--azure-blue) 0%, var(--azure-cyan) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
}
.why-card__icon svg {
  width: 26px; height: 26px;
  color: var(--white);
}

.why-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
}

.why-card p {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

/* ----------------------------------------------------------------
   11. Technologies Section
---------------------------------------------------------------- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-4);
}

.tech-badge {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  cursor: default;
}
.tech-badge:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0,120,212,0.3);
}

.tech-badge__icon {
  width: 48px; height: 48px;
  margin-inline: auto;
  margin-bottom: var(--space-3);
}
.tech-badge__icon svg { width: 48px; height: 48px; }

.tech-badge span {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--gray-700);
}

/* ----------------------------------------------------------------
   12. CTA Section
---------------------------------------------------------------- */
.cta {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  text-align: center;
  padding-block: var(--space-24);
}

.cta__bg-shapes { position: absolute; inset: 0; pointer-events: none; }
.shape--4 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,120,212,0.3) 0%, transparent 70%);
  top: -200px; left: -100px;
  position: absolute; border-radius: 50%;
  animation: float-shape 14s ease-in-out infinite;
}
.shape--5 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,180,240,0.2) 0%, transparent 70%);
  bottom: -200px; right: -100px;
  position: absolute; border-radius: 50%;
  animation: float-shape 18s ease-in-out infinite reverse;
}

.cta__content { position: relative; z-index: 1; max-width: 700px; margin-inline: auto; }

.cta__title {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: 800;
  color: var(--white);
  margin-bottom: var(--space-6);
  line-height: var(--leading-tight);
}

.cta__sub {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--space-10);
  line-height: var(--leading-normal);
}

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

.contact__info .section-title { margin-bottom: var(--space-4); }
.contact__info > p {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

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

.contact__icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: linear-gradient(135deg, rgba(0,120,212,0.1) 0%, rgba(0,180,240,0.08) 100%);
  border: 1px solid rgba(0,120,212,0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact__icon svg { width: 20px; height: 20px; color: var(--azure-blue); }

.contact__details strong {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.contact__details a,
.contact__details span {
  font-size: var(--text-base);
  color: var(--gray-700);
}
.contact__details a:hover { color: var(--azure-blue); }

/* Contact Form */
.contact__form {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-lg);
}

.contact__form h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-8);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--space-2);
}
.form-group label span { color: #E53E3E; margin-left: 2px; }

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--gray-900);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--azure-blue);
  box-shadow: 0 0 0 3px rgba(0,120,212,0.15);
}

.form-group input.error,
.form-group textarea.error { border-color: #E53E3E; }

.form-group textarea { resize: vertical; min-height: 120px; }

/* Custom select arrow */
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%23607080' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  background-size: 16px;
  padding-right: var(--space-10);
}

.form-error {
  display: block;
  font-size: var(--text-xs);
  color: #E53E3E;
  margin-top: var(--space-1);
  min-height: 1em;
}

.form-success {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: rgba(0,133,117,0.1);
  border: 1px solid rgba(0,133,117,0.3);
  border-radius: var(--radius-md);
  color: var(--azure-teal);
  font-weight: 500;
  font-size: var(--text-sm);
  text-align: center;
}

/* Button loader */
.btn-loader {
  display: none;
  width: 18px; height: 18px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn.loading .btn-text { display: none; }
.btn.loading .btn-loader { display: block; }

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

/* ----------------------------------------------------------------
   14. Footer
---------------------------------------------------------------- */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,0.7);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: var(--space-16);
  padding-block: var(--space-16);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer__brand img { height: 70px; width: auto; margin-bottom: var(--space-4); }

.footer__brand p {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  max-width: 260px;
  margin-bottom: var(--space-6);
}

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

.footer__social a {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.footer__social a:hover {
  background: var(--azure-blue);
  border-color: var(--azure-blue);
  color: var(--white);
}
.footer__social svg { width: 18px; height: 18px; }

.footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  padding-top: var(--space-2);
}

.footer__nav-col h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

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

.footer__nav-col a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}
.footer__nav-col a:hover { color: var(--white); }

.footer__bottom { padding-block: var(--space-6); }

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

.footer__bottom p { font-size: var(--text-sm); }

.footer__legal {
  display: flex;
  gap: var(--space-6);
}
.footer__legal a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
}
.footer__legal a:hover { color: var(--white); }

/* ----------------------------------------------------------------
   15. Back to Top
---------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  z-index: 900;
  width: 48px; height: 48px;
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: opacity var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  opacity: 0;
}
.back-to-top:not([hidden]) { opacity: 1; }
.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.back-to-top svg { width: 20px; height: 20px; }

/* ----------------------------------------------------------------
   16. Responsive — Tablet (≤ 1024px)
---------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root { --section-py: 4rem; }

  .about__inner        { grid-template-columns: 1fr; gap: var(--space-12); }
  .about__text         { order: 1; }
  .about__stats        { order: 2; }

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

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

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

/* ----------------------------------------------------------------
   17. Responsive — Mobile (≤ 768px)
---------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --section-py: 3rem;
    --navbar-height: 64px;
  }

  /* Navbar */
  .navbar__links {
    position: fixed;
    top: var(--navbar-height);
    left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-5);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }
  .navbar__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .navbar__links .navbar__link { color: var(--gray-800); font-size: var(--text-lg); }
  .navbar__hamburger { display: flex; }
  .navbar__actions .btn--primary { display: none; }

  /* Hero */
  .hero__content     { padding-block: var(--space-16); }
  .hero__ctas        { flex-direction: column; align-items: center; }
  .hero__ctas .btn   { width: 100%; max-width: 280px; }

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

  /* Why Us */
  .why-us__grid      { grid-template-columns: 1fr; }

  /* Technologies */
  .tech-grid         { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }

  /* About stats */
  .about__stats      { grid-template-columns: 1fr 1fr; }

  /* Contact form */
  .contact__form     { padding: var(--space-6); }

  /* Footer */
  .footer__inner     { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer__nav       { grid-template-columns: 1fr 1fr; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }
  .footer__legal     { justify-content: center; }

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

/* ----------------------------------------------------------------
   18. Responsive — Small Mobile (≤ 480px)
---------------------------------------------------------------- */
@media (max-width: 480px) {
  :root { --section-py: 2.5rem; }

  .container { padding-inline: var(--space-4); }

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

  .contact__form     { padding: var(--space-5); }
  .hero__badges .badge { font-size: 0.65rem; }
}

/* ----------------------------------------------------------------
   19. Reduced Motion
---------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .fade-up { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ----------------------------------------------------------------
   20. Print
---------------------------------------------------------------- */
@media print {
  .navbar, .hero__scroll, .back-to-top, .hero__bg-shapes, .cta__bg-shapes { display: none; }
  body { color: #000; background: #fff; }
}