/* ================================================================
   CyberGlobe LTD — styles.css
   Dark enterprise infrastructure consulting website
   
   TABLE OF CONTENTS
   01. CSS Custom Properties (Design Tokens)
   02. CSS Reset & Base
   03. Typography
   04. Layout Utilities
   05. Animations & Reveal System
   06. Header & Navigation
   07. Mobile Menu
   08. Hero Section
   09. About Section
   10. Services Section
   11. Expertise Section
   12. Why Us Section
   13. Process Section
   14. Testimonials Section
   15. Contact Section
   16. Footer
   17. Back to Top
   18. Responsive Overrides
   ================================================================ */


/* ================================================================
   01. CSS CUSTOM PROPERTIES
   ================================================================ */

:root {
  /* — Colour Palette — */
  --col-bg:          #070c18;       /* deepest background               */
  --col-surface:     #0c1225;       /* card/section surfaces            */
  --col-surface-2:   #111a30;       /* raised surfaces                  */
  --col-border:      rgba(255,255,255,0.06);
  --col-border-glow: rgba(0,212,255,0.15);

  --col-cyan:        #00d4ff;       /* primary accent                   */
  --col-cyan-dim:    rgba(0,212,255,0.12);
  --col-cyan-glow:   rgba(0,212,255,0.25);
  --col-green:       #00ff94;       /* secondary accent                 */
  --col-green-dim:   rgba(0,255,148,0.10);

  --col-text-1:      #dde4f0;       /* primary text                     */
  --col-text-2:      #8892ad;       /* secondary text                   */
  --col-text-3:      #4a5568;       /* muted text                       */

  --col-gradient:    linear-gradient(135deg, #00d4ff 0%, #00ff94 100%);
  --col-gradient-r:  linear-gradient(135deg, #00ff94 0%, #00d4ff 100%);

  /* — Typography — */
  --font-brand:  'Syncopate', sans-serif;    /* logo / section labels  */
  --font-head:   'Exo 2', sans-serif;        /* headings               */
  --font-body:   'Source Sans 3', sans-serif;/* body copy              */

  /* — 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;

  /* — Border Radius — */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --radius-full: 9999px;

  /* — Transitions — */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
  --dur-fast:   150ms;
  --dur-mid:    280ms;
  --dur-slow:   500ms;

  /* — Layout — */
  --container-max: 1180px;
  --container-pad: clamp(1.25rem, 5vw, 2.5rem);
  --header-h:    72px;

  /* — Shadows — */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:   0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.6);
  --shadow-cyan: 0 0 30px rgba(0,212,255,0.15);
}


/* ================================================================
   02. CSS RESET & BASE
   ================================================================ */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--col-bg);
  color: var(--col-text-1);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

ul { list-style: none; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur-fast) ease;
}

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

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

:focus-visible {
  outline: 2px solid var(--col-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--col-cyan-dim);
  color: var(--col-cyan);
}

/* Scrollbar styling */
::-webkit-scrollbar              { width: 6px; }
::-webkit-scrollbar-track        { background: var(--col-bg); }
::-webkit-scrollbar-thumb        { background: var(--col-surface-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover  { background: var(--col-text-3); }


/* ================================================================
   03. TYPOGRAPHY
   ================================================================ */

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--col-text-1);
}

.section-label {
  font-family: var(--font-brand);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--col-cyan);
  margin-bottom: var(--space-md);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--col-gradient);
}

.section-heading {
  font-size: clamp(1.8rem, 3.5vw, 2.7rem);
  font-weight: 800;
  margin-bottom: var(--space-lg);
  color: var(--col-text-1);
}

.section-sub {
  font-size: 1.05rem;
  color: var(--col-text-2);
  max-width: 580px;
  line-height: 1.8;
}

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


/* ================================================================
   04. LAYOUT UTILITIES
   ================================================================ */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

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

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

.section-header .section-sub {
  margin: 0 auto;
}


/* ================================================================
   05. ANIMATIONS & REVEAL SYSTEM
   ================================================================ */

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.65s var(--ease-out),
    transform 0.65s var(--ease-out);
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }

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

/* Gradient pulse on accents */
@keyframes pulse-glow {
  0%, 100% { opacity: 0.6; }
  50%       { opacity: 1; }
}

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

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

@keyframes badge-dot-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,255,148,0.5); }
  50%       { box-shadow: 0 0 0 6px rgba(0,255,148,0); }
}

@keyframes scroll-line {
  0%   { transform: scaleY(0) translateY(0); transform-origin: top; }
  50%  { transform: scaleY(1) translateY(0); transform-origin: top; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(0) translateY(0); transform-origin: bottom; }
}

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


/* ================================================================
   06. HEADER & NAVIGATION
   ================================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition:
    background var(--dur-slow) ease,
    box-shadow var(--dur-slow) ease,
    backdrop-filter var(--dur-slow) ease;
}

.site-header.is-scrolled {
  background: rgba(7, 12, 24, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--col-border), var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  flex-shrink: 0;
}

.brand-icon {
  display: flex;
  align-items: center;
  width: 32px;
  height: 32px;
  /* ensure brand image is cropped to a circle */
  border-radius: 50%;
  overflow: hidden;
}

.brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.brand-name {
  font-family: var(--font-brand);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--col-text-1);
}

.brand-accent {
  color: var(--col-cyan);
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

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

.nav-link {
  font-family: var(--font-head);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--col-text-2);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition:
    color var(--dur-fast) ease,
    background var(--dur-fast) ease;
  position: relative;
  letter-spacing: 0.02em;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: var(--col-gradient);
  transform: translateX(-50%);
  transition: width var(--dur-mid) var(--ease-out);
  border-radius: 1px;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--col-text-1);
}

.nav-link.is-active::after,
.nav-link:hover::after {
  width: calc(100% - var(--space-xl));
}

.nav-link--cta {
  color: var(--col-cyan) !important;
  border: 1px solid var(--col-border-glow);
  background: var(--col-cyan-dim);
  margin-left: var(--space-sm);
}

.nav-link--cta::after { display: none; }

.nav-link--cta:hover {
  background: rgba(0,212,255,0.2) !important;
  border-color: rgba(0,212,255,0.4);
}


/* ================================================================
   07. MOBILE MENU
   ================================================================ */

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast) ease;
  z-index: 1001;
}

.menu-toggle:hover {
  background: var(--col-surface);
}

.menu-toggle__bar {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--col-text-1);
  border-radius: 2px;
  transform-origin: center;
  transition:
    transform var(--dur-mid) var(--ease-out),
    opacity var(--dur-mid) ease;
}

/* Open state */
.menu-toggle.is-open .menu-toggle__bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.menu-toggle.is-open .menu-toggle__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.menu-toggle.is-open .menu-toggle__bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(7, 12, 24, 0.6);
  backdrop-filter: blur(4px);
  z-index: 850;
  opacity: 0;
  transition: opacity var(--dur-mid) ease;
}

.mobile-overlay.is-active {
  opacity: 1;
}


/* ================================================================
   08. HERO SECTION
   ================================================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--header-h);
}

/* Background system */
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--col-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--col-border) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: center center;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: pulse-glow 4s ease-in-out infinite;
}

.hero-glow--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,212,255,0.12) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  animation-delay: 0s;
}

.hero-glow--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0,255,148,0.08) 0%, transparent 70%);
  bottom: 50px;
  left: -80px;
  animation-delay: 2s;
}

.hero-orb {
  position: absolute;
  width: 600px;
  height: 600px;
  right: -100px;
  top: 50%;
  transform: translateY(-50%);
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    rgba(0,212,255,0.04) 90deg,
    transparent 180deg,
    rgba(0,255,148,0.03) 270deg,
    transparent 360deg
  );
  border-radius: 50%;
  border: 1px solid rgba(0,212,255,0.06);
  animation: spin-slow 30s linear infinite;
}

/* Hero content */
.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-brand);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--col-text-2);
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xl);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--col-green);
  flex-shrink: 0;
  animation: badge-dot-pulse 2s ease-in-out infinite;
}

.hero-headline {
  font-size: clamp(2.5rem, 6.5vw, 5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-xl);
  max-width: 700px;
}

.hero-sub {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--col-text-2);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-4xl);
}

/* Hero stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 800;
  background: var(--col-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--col-text-3);
  margin-top: 4px;
  letter-spacing: 0.03em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--col-border), transparent);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-indicator__line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--col-cyan), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}


/* ================================================================
   BUTTONS (global)
   ================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    transform var(--dur-fast) ease,
    box-shadow var(--dur-mid) ease,
    background var(--dur-fast) ease,
    border-color var(--dur-fast) ease,
    opacity var(--dur-fast) ease;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.06);
  opacity: 0;
  transition: opacity var(--dur-fast) ease;
}

.btn:hover::before { opacity: 1; }
.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--col-gradient);
  color: #070c18;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0,212,255,0.25);
}

.btn--primary:hover {
  box-shadow: 0 8px 32px rgba(0,212,255,0.4);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--col-text-1);
  border: 1px solid var(--col-border);
}

.btn--outline:hover {
  border-color: var(--col-cyan-glow);
  box-shadow: 0 0 20px var(--col-cyan-dim);
}

.btn-icon {
  flex-shrink: 0;
  transition: transform var(--dur-mid) var(--ease-out);
}

.btn:hover .btn-icon {
  transform: translateX(3px);
}

.btn--submit {
  min-width: 180px;
}

.btn--submit .btn-loading {
  display: none;
}

.btn--submit.is-loading .btn-text {
  display: none;
}

.btn--submit.is-loading .btn-loading {
  display: inline;
}


/* ================================================================
   09. ABOUT SECTION
   ================================================================ */

.about {
  background: linear-gradient(
    180deg,
    var(--col-bg) 0%,
    var(--col-surface) 50%,
    var(--col-bg) 100%
  );
}

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

.about-content .section-label {
  display: inline-flex;
}

.about-lead {
  font-size: 1.15rem;
  color: var(--col-text-1);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
}

.about-body {
  color: var(--col-text-2);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.about-pillars {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.pillar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--col-text-2);
  letter-spacing: 0.02em;
}

.pillar-icon {
  color: var(--col-cyan);
  font-size: 0.7rem;
}

/* About visual card stack */
.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-card-stack {
  position: relative;
  width: 340px;
  height: 280px;
}

.about-card {
  position: absolute;
  border-radius: var(--radius-lg);
  border: 1px solid var(--col-border);
}

.about-card--back {
  inset: 0;
  background: var(--col-surface);
  transform: rotate(4deg) translateY(12px);
  opacity: 0.4;
}

.about-card--mid {
  inset: 0;
  background: var(--col-surface);
  transform: rotate(2deg) translateY(6px);
  opacity: 0.7;
  border-color: var(--col-border-glow);
}

.about-card--front {
  inset: 0;
  background: var(--col-surface-2);
  border-color: var(--col-border-glow);
  box-shadow: var(--shadow-md), var(--shadow-cyan);
  overflow: hidden;
}

.about-card--front::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--col-gradient);
  opacity: 0.6;
}

.about-card-inner {
  padding: var(--space-xl);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-xl);
}

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

.card-env {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.env-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.env-dot--on   { background: var(--col-cyan); box-shadow: 0 0 8px var(--col-cyan); }
.env-dot--priv { background: var(--col-green); box-shadow: 0 0 8px var(--col-green); }
.env-dot--pub  { background: #a78bfa; box-shadow: 0 0 8px #a78bfa; }

.env-label {
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--col-text-1);
  flex: 1;
}

.env-status {
  font-family: var(--font-brand);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  color: var(--col-green);
  text-transform: uppercase;
  background: var(--col-green-dim);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.card-divider {
  height: 1px;
  background: var(--col-border);
}

.card-domains {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.card-domain-tag {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--col-text-2);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--col-border);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
}


/* ================================================================
   10. SERVICES SECTION
   ================================================================ */

.services {
  background: var(--col-bg);
}

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

.service-card {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition:
    border-color var(--dur-mid) ease,
    box-shadow var(--dur-mid) ease,
    transform var(--dur-mid) var(--ease-out);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--col-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-slow) var(--ease-out);
}

.service-card:hover {
  border-color: var(--col-border-glow);
  box-shadow: var(--shadow-md), 0 0 40px rgba(0,212,255,0.08);
  transform: translateY(-4px);
}

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

.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--col-cyan-dim);
  border: 1px solid var(--col-border-glow);
  border-radius: var(--radius-sm);
  color: var(--col-cyan);
  margin-bottom: var(--space-lg);
  transition:
    background var(--dur-mid) ease,
    box-shadow var(--dur-mid) ease;
}

.service-card:hover .service-card__icon {
  background: rgba(0,212,255,0.18);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
}

.service-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--col-text-1);
}

.service-card__body {
  font-size: 0.9rem;
  color: var(--col-text-2);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
}

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

.service-card__list li {
  font-size: 0.82rem;
  color: var(--col-text-3);
  padding-left: var(--space-md);
  position: relative;
  line-height: 1.5;
}

.service-card__list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--col-cyan);
  font-size: 0.7rem;
  top: 2px;
}


/* ================================================================
   11. EXPERTISE SECTION
   ================================================================ */

.expertise {
  background: var(--col-surface);
  position: relative;
  overflow: hidden;
}

.expertise-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(0,212,255,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(0,255,148,0.03) 0%, transparent 60%);
  pointer-events: none;
}

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

.expertise-category {
  background: var(--col-surface-2);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition:
    border-color var(--dur-mid) ease,
    box-shadow var(--dur-mid) ease;
}

.expertise-category:hover {
  border-color: var(--col-border-glow);
  box-shadow: var(--shadow-sm);
}

/* Make last row (2-column) items span correctly */
.expertise-categories .expertise-category:nth-child(4) {
  grid-column: 1 / 2;
}

.expertise-categories .expertise-category:nth-child(5) {
  grid-column: 2 / 3;
}

.expertise-cat-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--col-text-2);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.cat-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--col-gradient);
  flex-shrink: 0;
}

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

.tag {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--col-text-2);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--col-border);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  transition:
    color var(--dur-fast) ease,
    border-color var(--dur-fast) ease,
    background var(--dur-fast) ease;
  letter-spacing: 0.02em;
}

.tag:hover {
  color: var(--col-cyan);
  border-color: var(--col-border-glow);
  background: var(--col-cyan-dim);
}


/* ================================================================
   12. WHY US SECTION
   ================================================================ */

.why-us {
  background: var(--col-bg);
}

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

.why-card {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition:
    border-color var(--dur-mid) ease,
    transform var(--dur-mid) var(--ease-out);
}

.why-card:hover {
  border-color: var(--col-border-glow);
  transform: translateY(-2px);
}

.why-card__number {
  font-family: var(--font-brand);
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--col-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.15;
  position: absolute;
  top: var(--space-md);
  right: var(--space-lg);
  line-height: 1;
  pointer-events: none;
  transition: opacity var(--dur-mid) ease;
}

.why-card:hover .why-card__number {
  opacity: 0.3;
}

.why-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--col-text-1);
}

.why-card__body {
  font-size: 0.88rem;
  color: var(--col-text-2);
  line-height: 1.75;
}


/* ================================================================
   13. PROCESS SECTION
   ================================================================ */

.process {
  background: linear-gradient(
    180deg,
    var(--col-bg) 0%,
    var(--col-surface) 100%
  );
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(12.5% + 28px);
  right: calc(12.5% + 28px);
  height: 1px;
  background: linear-gradient(
    90deg,
    var(--col-cyan) 0%,
    var(--col-border) 50%,
    var(--col-green) 100%
  );
  z-index: 0;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 var(--space-lg);
  position: relative;
  z-index: 1;
}

.step-connector { display: none; }

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--col-surface-2);
  border: 1px solid var(--col-border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-brand);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--col-cyan);
  margin-bottom: var(--space-xl);
  position: relative;
  box-shadow: var(--shadow-sm), 0 0 20px rgba(0,212,255,0.12);
  transition:
    background var(--dur-mid) ease,
    box-shadow var(--dur-mid) ease;
  flex-shrink: 0;
}

.process-step:hover .step-number {
  background: var(--col-cyan-dim);
  box-shadow: var(--shadow-md), 0 0 32px rgba(0,212,255,0.25);
}

.step-content {}

.step-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--col-text-1);
}

.step-body {
  font-size: 0.88rem;
  color: var(--col-text-2);
  line-height: 1.75;
}


/* ================================================================
   14. TESTIMONIALS SECTION
   ================================================================ */

.testimonials {
  background: var(--col-surface);
}

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

.testimonial {
  background: var(--col-surface-2);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  position: relative;
  transition:
    border-color var(--dur-mid) ease,
    box-shadow var(--dur-mid) ease;
}

.testimonial:hover {
  border-color: var(--col-border-glow);
  box-shadow: var(--shadow-md);
}

.testimonial::before {
  content: '\201C';
  position: absolute;
  top: var(--space-lg);
  right: var(--space-xl);
  font-family: Georgia, serif;
  font-size: 4rem;
  line-height: 1;
  color: var(--col-cyan);
  opacity: 0.15;
  pointer-events: none;
}

.testimonial__stars {
  color: var(--col-cyan);
  font-size: 0.8rem;
  letter-spacing: 2px;
}

.testimonial__quote {
  font-size: 0.9rem;
  color: var(--col-text-2);
  line-height: 1.8;
  font-style: italic;
  flex: 1;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--col-border);
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--col-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 700;
  color: #070c18;
  flex-shrink: 0;
}

.author-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.author-name {
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--col-text-1);
  font-style: normal;
}

.author-role {
  font-size: 0.78rem;
  color: var(--col-text-3);
}


/* ================================================================
   15. CONTACT SECTION
   ================================================================ */

.contact {
  background: var(--col-bg);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  bottom: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,0.05) 0%, transparent 65%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-5xl);
  align-items: start;
}

.contact-info .section-heading {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin-bottom: var(--space-lg);
}

.contact-sub {
  color: var(--col-text-2);
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--col-text-2);
  font-size: 0.9rem;
  transition: color var(--dur-fast) ease;
}

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

.contact-detail__icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-sm);
  color: var(--col-cyan);
  flex-shrink: 0;
  transition: border-color var(--dur-fast) ease;
}

a.contact-detail:hover .contact-detail__icon {
  border-color: var(--col-border-glow);
}

.contact-response {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.82rem;
  color: var(--col-text-3);
  font-family: var(--font-head);
}

/* Contact Form */
.contact-form-wrap {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.contact-form-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--col-gradient);
  opacity: 0.5;
}

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

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

.form-group--full {
  grid-column: 1 / -1;
  margin-bottom: var(--space-md);
}

.form-label {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--col-text-2);
  letter-spacing: 0.03em;
}

.form-label span { color: var(--col-cyan); }

.form-input {
  background: var(--col-surface-2);
  border: 1px solid var(--col-border);
  border-radius: var(--radius-sm);
  color: var(--col-text-1);
  padding: 0.7rem 1rem;
  font-size: 0.9rem;
  transition:
    border-color var(--dur-fast) ease,
    box-shadow var(--dur-fast) ease;
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder {
  color: var(--col-text-3);
}

.form-input:focus {
  outline: none;
  border-color: var(--col-cyan-glow);
  box-shadow: 0 0 0 3px var(--col-cyan-dim);
}

.form-input.has-error {
  border-color: rgba(255, 80, 80, 0.5);
  box-shadow: 0 0 0 3px rgba(255,80,80,0.1);
}

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

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238892ad' stroke-width='1.5' stroke-linecap='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-select option {
  background: var(--col-surface-2);
  color: var(--col-text-1);
}

.form-error {
  font-size: 0.75rem;
  color: rgba(255,100,100,0.9);
  min-height: 1rem;
  line-height: 1;
}

.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.form-privacy {
  font-size: 0.78rem;
  color: var(--col-text-3);
  max-width: 300px;
  line-height: 1.5;
}

.form-success {
  /* display is intentionally not set here so the [hidden] attribute
     (which defaults to display:none in user-agent styles) can hide the
     element without being overridden. */
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--col-green-dim);
  border: 1px solid rgba(0,255,148,0.25);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-lg);
  color: var(--col-green);
  font-size: 0.88rem;
}

/* always hide elements that are marked hidden, even if other styles
   attempt to change their display value */
[hidden] {
  display: none !important;
}


/* ================================================================
   16. FOOTER
   ================================================================ */

.site-footer {
  background: var(--col-surface);
  border-top: 1px solid var(--col-border);
}

.footer-inner {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-xl);
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-4xl);
  margin-bottom: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--col-border);
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--col-text-3);
  margin-top: var(--space-md);
  line-height: 1.7;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
}

.footer-nav-heading {
  font-family: var(--font-brand);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--col-text-3);
  margin-bottom: var(--space-md);
}

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

.footer-nav a,
.footer-nav span {
  font-size: 0.85rem;
  color: var(--col-text-2);
  transition: color var(--dur-fast) ease;
}

.footer-nav a:hover {
  color: var(--col-cyan);
}

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

.footer-copy {
  font-size: 0.8rem;
  color: var(--col-text-3);
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.8rem;
  color: var(--col-text-3);
}

.footer-legal a {
  color: var(--col-text-3);
  transition: color var(--dur-fast) ease;
}

.footer-legal a:hover { color: var(--col-text-2); }


/* ================================================================
   17. BACK TO TOP
   ================================================================ */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--col-surface-2);
  border: 1px solid var(--col-border);
  color: var(--col-text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition:
    opacity var(--dur-mid) ease,
    visibility var(--dur-mid) ease,
    transform var(--dur-mid) ease,
    border-color var(--dur-fast) ease,
    box-shadow var(--dur-fast) ease,
    color var(--dur-fast) ease;
  z-index: 500;
  cursor: pointer;
}

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

.back-to-top:hover {
  border-color: var(--col-border-glow);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
  color: var(--col-cyan);
}


/* ================================================================
   18. RESPONSIVE OVERRIDES
   ================================================================ */

/* Tablet: max 1024px */
@media (max-width: 1024px) {
  :root {
    --space-5xl: 6rem;
    --space-4xl: 4rem;
  }

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

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

  .expertise-categories .expertise-category:nth-child(4),
  .expertise-categories .expertise-category:nth-child(5) {
    grid-column: auto;
  }

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

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }

  .process-steps::before { display: none; }

  .process-step {
    text-align: left;
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-lg);
    padding: 0;
  }

  .step-number {
    margin-bottom: 0;
    flex-shrink: 0;
  }

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

  .testimonials-grid .testimonial:last-child {
    grid-column: 1 / -1;
    max-width: 480px;
    margin: 0 auto;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }

  .about-visual {
    order: -1;
  }

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
}

/* Mobile: max 768px */
@media (max-width: 768px) {
  :root {
    --header-h: 64px;
    --space-5xl: 5rem;
    --space-4xl: 3rem;
  }

  /* Mobile nav */
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(300px, 80vw);
    background: var(--col-surface);
    border-left: 1px solid var(--col-border);
    box-shadow: var(--shadow-lg);
    z-index: 900;
    transform: translateX(100%);
    transition: transform var(--dur-mid) var(--ease-out);
    padding: calc(var(--header-h) + var(--space-xl)) var(--space-xl) var(--space-xl);
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .mobile-overlay {
    display: block;
    pointer-events: none;
  }

  .mobile-overlay.is-active {
    pointer-events: all;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 1rem;
  }

  .nav-link::after { display: none; }

  .nav-link--cta {
    margin-left: 0;
    margin-top: var(--space-md);
    justify-content: center;
    text-align: center;
  }

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

  .hero-actions {
    flex-direction: column;
  }

  .hero-stats {
    gap: var(--space-lg);
  }

  .stat-num { font-size: 1.5rem; }

  /* About */
  .about-card-stack {
    width: 100%;
    max-width: 340px;
    height: 260px;
  }

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

  /* Expertise */
  .expertise-categories {
    grid-template-columns: 1fr;
  }

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

  /* Process */
  .process-steps {
    grid-template-columns: 1fr;
  }

  /* Testimonials */
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid .testimonial:last-child {
    grid-column: auto;
    max-width: none;
    margin: 0;
  }

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

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

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

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

/* Small mobile: max 480px */
@media (max-width: 480px) {
  :root {
    --space-5xl: 4rem;
  }

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

  .stat-divider {
    display: none;
  }

  .about-card-stack {
    height: 220px;
  }

  .footer-nav {
    grid-template-columns: 1fr;
  }

  .contact-form-wrap {
    padding: var(--space-lg);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}