/* ============================================================
   HESO (Hero Solutions) — Corporate Website Stylesheet
   Dark tech-forward theme · Glassmorphism · Electric Cyan
   ============================================================ */

/* ── Google Fonts ──────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── Design Tokens (Custom Properties) ─────────────────────── */
:root {
  /* Brand */
  --color-primary:        #00b4d8;
  --color-primary-rgb:    0, 180, 216;
  --color-primary-dark:   #0096b7;
  --color-primary-light:  #48cae4;

  /* Canvas & Surface */
  --color-canvas:         #0a0a0f;
  --color-surface:        #12121a;
  --color-surface-alt:    #16161f;
  --color-surface-hover:  #1a1a25;
  --color-elevated:       #1e1e2a;

  /* Borders */
  --color-border:         #2a2a35;
  --color-border-light:   #3a3a48;

  /* Text */
  --color-text:           #e8e8ed;
  --color-text-secondary: #9898a8;
  --color-text-muted:     #6a6a7a;

  /* Navbar */
  --color-navbar-bg:      rgba(10, 10, 15, 0.75);
  --color-navbar-bg-scrolled: rgba(10, 10, 15, 0.95);
  
  /* Grid lines */
  --color-grid-line:      rgba(255, 255, 255, 0.015);

  /* State */
  --color-success:        #34d399;
  --color-warning:        #fbbf24;
  --color-error:          #f87171;

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

  /* Spacing scale */
  --space-xs:   0.25rem;
  --space-sm:   0.5rem;
  --space-md:   1rem;
  --space-lg:   1.5rem;
  --space-xl:   2rem;
  --space-2xl:  3rem;
  --space-3xl:  4rem;
  --space-4xl:  6rem;
  --space-5xl:  8rem;

  /* Radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:   0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md:   0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg:   0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(var(--color-primary-rgb), 0.3);
  --shadow-glow-sm: 0 0 15px rgba(var(--color-primary-rgb), 0.15);
  --shadow-glow-lg: 0 0 60px rgba(var(--color-primary-rgb), 0.25);

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-base:   0.3s ease;
  --transition-slow:   0.5s ease;
  --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index scale */
  --z-canvas:    0;
  --z-content:   1;
  --z-overlay:   10;
  --z-nav:       100;
  --z-modal:     1000;

  /* Layout */
  --container-max: 1200px;
  --nav-height:    72px;
}

html[data-theme="light"],
:root[data-theme="light"] {
  /* Brand (Deeper cyan/blue for contrast) */
  --color-primary:        #0077b6;
  --color-primary-rgb:    0, 119, 182;
  --color-primary-dark:   #023e8a;
  --color-primary-light:  #0096c7;

  /* Canvas & Surface */
  --color-canvas:         #f6f8fa;
  --color-surface:        #ffffff;
  --color-surface-alt:    #eff2f5;
  --color-surface-hover:  #e5e9f0;
  --color-elevated:       #ffffff;

  /* Borders */
  --color-border:         #d0d7de;
  --color-border-light:   #e1e4e6;

  /* Text */
  --color-text:           #1f2328;
  --color-text-secondary: #424b54;
  --color-text-muted:     #6e7781;

  /* Navbar */
  --color-navbar-bg:      rgba(246, 248, 250, 0.75);
  --color-navbar-bg-scrolled: rgba(246, 248, 250, 0.95);

  /* Grid lines */
  --color-grid-line:      rgba(0, 0, 0, 0.03);
}

/* ── Keyframes ─────────────────────────────────────────────── */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

@keyframes glow-pulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.2),
                0 0 40px rgba(var(--color-primary-rgb), 0.1);
  }
  50% {
    box-shadow: 0 0 30px rgba(var(--color-primary-rgb), 0.4),
                0 0 60px rgba(var(--color-primary-rgb), 0.2);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes pulse-ring {
  0%   { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

@keyframes gradient-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

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

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

::selection {
  background: rgba(var(--color-primary-rgb), 0.3);
  color: var(--color-primary-light);
}

::-moz-selection {
  background: rgba(var(--color-primary-rgb), 0.3);
  color: var(--color-primary-light);
}

body {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-canvas);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  transition: background-color var(--transition-base), color var(--transition-base);
}

body,
.navbar,
section,
.value-card,
.service-card,
.project-card,
.other-card,
.client-card,
.info-block,
.company-facts,
.timeline-content,
.tech-badge,
input,
textarea {
  transition: background-color var(--transition-base),
              color var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

/* Grid background overlay */
body::after,
.grid-bg::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--color-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid-line) 1px, transparent 1px);
  background-size: 60px 60px;
}

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

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

ul, ol {
  list-style: none;
}

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

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

/* ── Container Utility ─────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Section common spacing */
section {
  padding: var(--space-5xl) 0;
  position: relative;
}

/* ============================================================
   1. NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-nav);
  background: var(--color-navbar-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.navbar.scrolled {
  background: var(--color-navbar-bg-scrolled);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  transition: opacity var(--transition-base);
  flex-shrink: 0;
}

.nav-logo:hover {
  opacity: 0.85;
}

.nav-logo img {
  height: var(--nav-height);
  width: auto;
  object-fit: contain;
}

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

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-base);
  letter-spacing: 0.01em;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

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

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  padding: 2px;
}

.lang-btn {
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lang-btn:hover {
  color: var(--color-text-secondary);
}

.lang-btn.active {
  background: var(--color-primary);
  color: var(--color-canvas);
  box-shadow: 0 0 12px rgba(var(--color-primary-rgb), 0.3);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  padding: 0;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  z-index: 10;
  pointer-events: auto;
}

.theme-toggle-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(var(--color-primary-rgb), 0.2);
}

.theme-toggle-btn svg {
  position: absolute;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              opacity 0.2s ease;
}

/* Default Dark Mode: Show sun, hide moon */
.theme-toggle-btn .sun-icon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.theme-toggle-btn .moon-icon {
  opacity: 0;
  transform: scale(0.5) rotate(90deg);
}

/* Light Mode active: Show moon, hide sun */
html[data-theme="light"] .theme-toggle-btn .sun-icon,
:root[data-theme="light"] .theme-toggle-btn .sun-icon {
  opacity: 0;
  transform: scale(0.5) rotate(-90deg);
}

html[data-theme="light"] .theme-toggle-btn .moon-icon,
:root[data-theme="light"] .theme-toggle-btn .moon-icon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}


/* CTA nav button */
.btn-cta-nav {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 10px 22px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-canvas);
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-cta-nav:hover {
  filter: brightness(1.15);
  box-shadow: var(--shadow-glow-sm);
  transform: translateY(-1px);
}

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

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  z-index: calc(var(--z-nav) + 1);
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   2. HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + var(--space-4xl)) var(--space-lg) var(--space-4xl);
  overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 50% 0%,
    rgba(var(--color-primary-rgb), 0.08) 0%,
    transparent 70%);
}

#particleCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-canvas);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: var(--z-content);
  max-width: 800px;
  margin: 0 auto;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: glow-pulse 3s ease-in-out infinite;
}

.hero-headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.hero-headline .accent {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, #90e0ef 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 4s ease-in-out infinite;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Primary Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-canvas);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.15) 50%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0);
  filter: brightness(0.95);
}

/* Outline Button */
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  background: transparent;
  border: 1px solid rgba(var(--color-primary-rgb), 0.4);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn-outline:hover {
  background: rgba(var(--color-primary-rgb), 0.1);
  border-color: var(--color-primary);
  color: var(--color-primary-light);
  box-shadow: var(--shadow-glow-sm);
  transform: translateY(-2px);
}

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

/* ============================================================
   3. STATS
   ============================================================ */
.stats {
  background: var(--color-surface);
  border-top: 1px solid rgba(var(--color-primary-rgb), 0.15);
  border-bottom: 1px solid rgba(var(--color-primary-rgb), 0.15);
  padding: var(--space-3xl) 0;
  position: relative;
}

.stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(var(--color-primary-rgb), 0.3) 50%,
    transparent 100%);
}

.stats::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(var(--color-primary-rgb), 0.3) 50%,
    transparent 100%);
}

.stats-grid {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  flex: 1;
  min-width: 140px;
}

.stat-number,
.stat-plus {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.stat-number.stat-text {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.8rem);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.stat-label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: linear-gradient(180deg,
    transparent 0%,
    var(--color-border-light) 50%,
    transparent 100%);
  flex-shrink: 0;
}

/* ============================================================
   4. TRUSTED BY
   ============================================================ */
.trusted-by {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.trusted-by .section-eyebrow,
.trusted-by .section-title {
  margin-bottom: var(--space-lg);
}

.trusted-logos {
  max-width: var(--container-max);
  width: calc(100% - var(--space-lg) * 2);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-xl);
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg) var(--space-2xl);
  flex-wrap: wrap;
}

.trust-logo {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  filter: none;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.trust-logo:hover {
  transform: scale(1.04);
}

.trust-logo svg {
  height: 100%;
  width: auto;
  max-width: 250px;
}

.trust-logo img {
  height: auto;
  max-height: 64px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  display: block;
  opacity: 1;
  filter: none;
  transition: all var(--transition-base);
}

.trust-logo:hover img {
  /* Parent handles the scaling transition */
}

/* ============================================================
   5. SECTION COMMON (Section eyebrow, title, sub)
   ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-md);
}

.section-eyebrow::before,
.section-eyebrow::after {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-primary);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  text-align: center;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

/* Center-aligned section layouts */
.why-heso,
.services,
.tech-stack,
.about,
.projects,
.clients,
.contact {
  text-align: center;
}

/* ============================================================
   5. WHY HESO
   ============================================================ */
.why-heso {
  padding: var(--space-5xl) var(--space-lg);
}

.values-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.value-card {
  background: var(--color-surface-alt);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  text-align: left;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.value-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.3);
  background: var(--color-surface-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

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

.value-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  font-size: 1.5rem;
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.15);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
  transition: all var(--transition-base);
}

.value-card:hover .value-icon {
  background: rgba(var(--color-primary-rgb), 0.15);
  box-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.2);
}

.value-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.value-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================================
   6. SERVICES
   ============================================================ */
.services {
  padding: var(--space-5xl) var(--space-lg);
  background: var(--color-surface);
}

.services-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.service-card {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  text-align: left;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background: radial-gradient(circle at top right,
    rgba(var(--color-primary-rgb), 0.04) 0%,
    transparent 60%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

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

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  font-size: 1.5rem;
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.15);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
  transition: all var(--transition-base);
}

.service-card:hover .service-icon {
  background: rgba(var(--color-primary-rgb), 0.15);
  transform: scale(1.05);
}

.service-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.service-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.service-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 4px 10px;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.15);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.service-tag:hover {
  background: rgba(var(--color-primary-rgb), 0.15);
  border-color: rgba(var(--color-primary-rgb), 0.3);
}

/* ============================================================
   7. TECH STACK
   ============================================================ */
.tech-stack {
  padding: var(--space-5xl) var(--space-lg);
}

.tech-categories {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.tech-category {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: left;
  transition: border-color var(--transition-base);
}

.tech-category:hover {
  border-color: rgba(var(--color-primary-rgb), 0.25);
}

.tech-category-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.tech-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.tech-badge:hover {
  color: var(--color-text);
  border-color: rgba(var(--color-primary-rgb), 0.3);
  background: rgba(var(--color-primary-rgb), 0.08);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-sm);
}

/* ============================================================
   8. ABOUT
   ============================================================ */
.about {
  padding: var(--space-5xl) var(--space-lg);
  background: var(--color-surface);
}

.about-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-content {
  display: flex;
  flex-direction: column;
}

.about-intro {
  margin-bottom: var(--space-xl);
}

.about-text {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.about-text:last-child {
  margin-bottom: 0;
}

.company-facts {
  width: 100%;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.fact-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.fact-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.fact-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
}

.about-image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.about-image-card {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.about-image-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 15, 0.8) 0%, rgba(10, 10, 15, 0.2) 50%, transparent 100%);
  z-index: 2;
  pointer-events: none;
}

.about-image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about-image-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-5px);
}

.about-image-card:hover img {
  transform: scale(1.05);
}

.about-image-overlay {
  position: absolute;
  bottom: var(--space-lg);
  left: var(--space-lg);
  right: var(--space-lg);
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.about-image-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.about-image-subtitle {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 500;
}

/* Timeline */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding: var(--space-xl) 0;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg,
    transparent 0%,
    var(--color-border-light) 10%,
    var(--color-border-light) 90%,
    transparent 100%);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--space-2xl);
  width: 50%;
}

.timeline-item:nth-child(odd) {
  padding-right: var(--space-2xl);
  text-align: right;
  justify-content: flex-end;
}

.timeline-item:nth-child(even) {
  margin-left: 50%;
  padding-left: var(--space-2xl);
  text-align: left;
}

.timeline-dot {
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--color-primary);
  border: 3px solid var(--color-surface);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.2),
              0 0 15px rgba(var(--color-primary-rgb), 0.3);
  z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-dot {
  right: -7px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -7px;
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.timeline-content {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.timeline-content:hover {
  border-color: rgba(var(--color-primary-rgb), 0.25);
  box-shadow: var(--shadow-glow-sm);
}

.timeline-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.timeline-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.timeline-address {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
  font-style: normal;
}

/* ============================================================
   9. MISSION
   ============================================================ */
.mission {
  padding: var(--space-5xl) var(--space-lg);
}

.mission-grid {
  max-width: var(--container-max);
  margin: 0 auto var(--space-2xl);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.mission-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  transition: all var(--transition-base);
}

.mission-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.25);
  box-shadow: var(--shadow-glow-sm);
  transform: translateY(-2px);
}

.mission-card.highlight {
  border-color: rgba(var(--color-primary-rgb), 0.3);
  background: linear-gradient(135deg,
    rgba(var(--color-primary-rgb), 0.06) 0%,
    var(--color-surface) 100%);
  position: relative;
}

.mission-card.highlight::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.mission-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.mission-text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.core-values {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.core-value {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.core-value:hover {
  color: var(--color-primary);
  border-color: rgba(var(--color-primary-rgb), 0.3);
  background: rgba(var(--color-primary-rgb), 0.06);
  transform: translateY(-2px);
}

/* ============================================================
   10. PROJECTS
   ============================================================ */
.projects {
  padding: var(--space-5xl) var(--space-lg);
  background: var(--color-surface);
}

.project-filters {
  max-width: var(--container-max);
  margin: 0 auto var(--space-2xl);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.filter-btn {
  padding: 8px 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
}

.filter-btn:hover {
  color: var(--color-text-secondary);
  border-color: var(--color-border-light);
  background: var(--color-surface-hover);
}

.filter-btn.active {
  color: var(--color-canvas);
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(var(--color-primary-rgb), 0.3);
}

.projects-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.project-card {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  text-align: left;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.project-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-6px);
}

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

.project-card[data-market] {
  cursor: default;
}

.project-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.project-market {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 3px 10px;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.project-domain {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.project-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Other Projects */
.other-projects {
  max-width: var(--container-max);
  margin: var(--space-3xl) auto 0;
}

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

.other-card {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.other-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.25);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-sm);
}

.other-market {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.other-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.other-desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================================
   11. CLIENTS
   ============================================================ */
.clients {
  padding: var(--space-5xl) var(--space-lg);
}

.clients-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-xl);
}

.client-card {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  text-align: center;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.client-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.25);
  box-shadow: var(--shadow-glow-sm);
  transform: translateY(-3px);
}

.client-card img {
  max-height: 96px;
  max-width: 100%;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 1;
  filter: none;
  transition: all var(--transition-base);
}

.client-card:hover img {
  transform: scale(1.04);
}

.client-card svg {
  height: 75px;
  width: auto;
  max-width: 100%;
  opacity: 0.45;
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
}

.client-card:hover svg {
  opacity: 1;
  color: var(--color-primary);
}

/* ============================================================
   11b. CTA BANNER
   ============================================================ */
.cta-banner {
  padding: var(--space-4xl) var(--space-lg);
  background: var(--color-surface-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.1) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 1;
}

.cta-banner-content {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-lg);
}

.cta-banner-text {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin: 0 auto;
  text-align: center;
  max-width: 800px;
}

/* ============================================================
   12. CONTACT
   ============================================================ */
.contact {
  padding: var(--space-5xl) var(--space-lg);
  background: var(--color-surface);
}

.contact-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-3xl);
  text-align: left;
}

.contact-form-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: relative;
  width: 100%;
}

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

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

.form-group-full {
  grid-column: span 2;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-base);
  resize: vertical;
}

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

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1),
              0 0 15px rgba(var(--color-primary-rgb), 0.1);
  background: var(--color-elevated);
}

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

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-canvas);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  grid-column: span 2;
  justify-self: start;
}

.btn-submit:hover {
  filter: brightness(1.1);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

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

.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  filter: none;
}

.form-success {
  display: none;
  padding: var(--space-xl) var(--space-lg);
  background: rgba(52, 211, 153, 0.04);
  border: 1px solid rgba(52, 211, 153, 0.15);
  border-radius: var(--radius-md);
  color: var(--color-success);
  font-weight: 500;
  text-align: center;
  animation: fadeInUp 0.5s ease forwards;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.form-success svg {
  margin-bottom: var(--space-md);
  color: var(--color-success);
}

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

.contact-map {
  margin-top: var(--space-md);
  height: 280px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.contact-map:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow-sm);
}

.contact-map iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(0.85) invert(0.92) contrast(1.1) opacity(0.8);
  transition: filter var(--transition-base), opacity var(--transition-base);
}

.contact-map:hover iframe {
  filter: grayscale(0.2) invert(0.92) contrast(1.1) opacity(0.95);
}

[data-theme="light"] .contact-map iframe {
  filter: grayscale(0.25) opacity(0.95);
}

[data-theme="light"] .contact-map:hover iframe {
  filter: grayscale(0%) opacity(1);
}


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

.info-block {
  padding: var(--space-lg);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base);
}

.info-block:hover {
  border-color: rgba(var(--color-primary-rgb), 0.2);
}

.info-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.info-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.6;
}

.info-value a {
  color: var(--color-primary);
  position: relative;
  transition: color var(--transition-base);
}

.info-value a::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.info-value a:hover {
  color: var(--color-primary-light);
}

.info-value a:hover::after {
  width: 100%;
}

/* ============================================================
   13. FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
  background: var(--color-canvas);
}

.footer-content {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 360px;
}

.footer-logo img {
  height: 64px;
  width: auto;
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  max-width: 320px;
  line-height: 1.6;
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-xs);
}

.footer-contact-item {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.footer-right {
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, 200px));
  gap: clamp(2.5rem, 8vw, 6rem);
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-column-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-top: var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ============================================================
   14. UTILITIES
   ============================================================ */

/* Fade-in scroll animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Timeline slide-in variations */
.timeline-item:nth-child(odd) .fade-in {
  transform: translateX(-30px);
}

.timeline-item:nth-child(even) .fade-in {
  transform: translateX(30px);
}

.timeline-item:nth-child(odd) .fade-in.visible,
.timeline-item:nth-child(even) .fade-in.visible {
  transform: translateX(0);
}

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

/* ============================================================
   RESPONSIVE — Tablet (max-width: 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

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

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

/* ============================================================
   RESPONSIVE — Mobile (max-width: 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

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

  /* Navigation — Mobile */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    transition: right var(--transition-base);
    border-left: 1px solid var(--color-border);
    z-index: var(--z-nav);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 1.1rem;
  }

  .nav-actions {
    gap: var(--space-sm);
  }

  .btn-cta-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  /* Hero — Mobile */
  .hero {
    min-height: 90vh;
    padding: calc(var(--nav-height) + var(--space-2xl)) var(--space-md) var(--space-2xl);
  }

  .hero-headline {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-outline {
    justify-content: center;
    width: 100%;
  }

  /* Stats — Mobile */
  .stats-grid {
    flex-direction: column;
    gap: var(--space-xl);
  }

  .stat-divider {
    width: 48px;
    height: 1px;
    background: linear-gradient(90deg,
      transparent 0%,
      var(--color-border-light) 50%,
      transparent 100%);
  }

  /* Trusted Logos — Mobile */
  .trusted-logos {
    gap: var(--space-xl);
  }

  /* Grids — 1 column */
  .values-grid,
  .services-grid,
  .projects-grid,
  .other-grid,
  .clients-grid,
  .mission-grid {
    grid-template-columns: 1fr;
  }

  /* Timeline — Mobile (single column) */
  .timeline-line {
    left: 20px;
  }

  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding-left: 50px;
    padding-right: 0;
    text-align: left;
    justify-content: flex-start;
  }

  .timeline-dot,
  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot {
    left: 13px;
    right: auto;
  }

  /* Footer — Mobile */
  .footer-content {
    flex-direction: column;
    gap: var(--space-2xl);
  }

  .footer-right {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  /* Section titles — Mobile */
  .section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }

  /* Contact grid */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

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

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

  .btn-submit {
    grid-column: span 1;
    justify-self: stretch;
    align-self: stretch;
    justify-content: center;
  }
}

/* ============================================================
   RESPONSIVE — Small phones (max-width: 480px)
   ============================================================ */
@media (max-width: 480px) {
  .hero-eyebrow {
    font-size: 0.7rem;
    padding: 6px 14px;
  }

  .stat-number {
    font-size: 1.75rem;
  }

  .value-card,
  .service-card,
  .project-card,
  .other-card {
    padding: var(--space-lg);
  }

  .trust-logo {
    height: 24px;
  }
}

/* ============================================================
   RESPONSIVE — Large desktops (min-width: 1200px)
   ============================================================ */
@media (min-width: 1200px) {
  .values-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

/* ============================================================
   ACCESSIBILITY — Focus styles
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-canvas);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-light) var(--color-canvas);
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .navbar,
  #particleCanvas,
  .hamburger,
  .grid-bg::after,
  body::after {
    display: none !important;
  }

  body {
    background: #fff;
    color: #111;
  }

  .hero {
    min-height: auto;
    padding: 2rem 0;
  }

  section {
    padding: 2rem 0;
    page-break-inside: avoid;
  }
}