/* ============================================
   TECHABOO WORLD SOLUTIONS — style.css
   Mobile-first responsive design
   BEM methodology
   ============================================ */

/* ============================================
   1. CSS CUSTOM PROPERTIES
   ============================================ */
:root {
  /* Brand Colors */
  --color-primary: #0A84FF;
  --color-primary-dark: #0062CC;
  --color-primary-light: #5EB3FF;
  --color-accent: #00D68F;

  /* Semantic Colors */
  --color-success: #00C853;
  --color-error: #FF3B30;
  --color-warning: #FFD60A;

  /* Neutrals */
  --color-neutral-dark: #0D0D0D;
  --color-neutral-medium: #4A4A4A;
  --color-neutral-light: #F4F6FA;
  --color-white: #FFFFFF;
  --color-border: #E0E4EC;

  /* Site-specific */
  --color-bg-dark: #080C14;
  --color-bg-mid: #0D1A30;
  --color-glass-bg: rgba(8, 12, 20, 0.80);
  --color-glass-border: rgba(255, 255, 255, 0.09);

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

  /* Type Scale (1.25 ratio) */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-md: 1.125rem;   /* 18px */
  --text-lg: 1.25rem;    /* 20px */
  --text-xl: 1.5rem;     /* 24px */
  --text-2xl: 1.875rem;  /* 30px */
  --text-3xl: 2.25rem;   /* 36px */
  --text-4xl: 3rem;      /* 48px */

  /* Spacing */
  --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;

  /* Layout */
  --container-max: 1200px;
  --container-padding: 1.5rem;
  --header-height: 170px;
  --header-height-compact: 170px;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-index scale */
  --z-header: 100;
  --z-mobile-menu: 200;
  --z-back-to-top: 50;
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-neutral-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

ul, ol {
  list-style: none;
}

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

button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

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

/* ============================================
   3. UTILITY CLASSES
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.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;
}

/* ============================================
   4. SKIP LINK
   ============================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 999;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
  color: var(--color-white);
}

/* ============================================
   5. BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.625rem 1.5rem;
  font-weight: 600;
  font-size: var(--text-sm);
  line-height: 1.4;
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              box-shadow var(--transition-fast),
              transform var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
  min-width: 44px;
  /* iOS Safari fix: prevent native button appearance overriding background */
  -webkit-appearance: none;
  appearance: none;
  /* Ensure background fills the full button on all iOS versions */
  -webkit-tap-highlight-color: transparent;
  box-sizing: border-box;
}

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

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn--primary:focus-visible {
  outline: 2px solid var(--color-primary-dark);
  outline-offset: 2px;
}

.btn--outline {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn--outline:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

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

.btn--white:hover {
  background-color: var(--color-neutral-light);
  color: var(--color-primary-dark);
}

.btn--lg {
  padding: 0.875rem 2rem;
  font-size: var(--text-base);
}

/* ============================================
   6. SECTION HEADER (reusable)
   ============================================ */
.section-header {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: var(--space-3xl);
}

.section-header__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.section-header__subtitle {
  font-size: var(--text-md);
  color: var(--color-neutral-medium);
  line-height: 1.6;
}

/* ============================================
   7. TAGS
   ============================================ */
.tag {
  display: inline-block;
  padding: 0.2em 0.6em;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  background-color: rgba(0, 120, 212, 0.08);
  border-radius: var(--border-radius-sm);
  letter-spacing: 0.02em;
}

.tag--sm {
  font-size: 0.6875rem;
  padding: 0.15em 0.5em;
}

/* ============================================
   8. HEADER / NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background-color: var(--color-glass-bg);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--color-glass-border);
  transition: background-color var(--transition-base),
              box-shadow var(--transition-base),
              padding var(--transition-base);
}

.header--scrolled {
  background-color: rgba(8, 12, 20, 0.97);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-md) var(--container-padding);
  transition: padding var(--transition-base);
}

.header--scrolled .header__container {
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-white);
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.header--scrolled .header__logo {
  color: var(--color-white);
}

.header__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 260px;
  height: 150px;
  background-color: rgba(255, 255, 255, 0.96);
  color: var(--color-white);
  font-weight: 800;
  font-size: var(--text-sm);
  border-radius: 8px;
  letter-spacing: 0.05em;
  overflow: hidden;
  padding: 0;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255,255,255,0.12);
}

.header__logo-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transform: scale(1.65);
}

.header__logo-text {
  display: none;
}

.header__nav {
  display: none;
}

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

.header__nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.header--scrolled .header__nav-link {
  color: var(--color-neutral-medium);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

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

.header--scrolled .header__nav-link:hover,
.header--scrolled .header__nav-link--active {
  color: var(--color-primary);
}

.header__nav-link:hover::after,
.header__nav-link--active::after {
  width: 100%;
}

.header__cta {
  display: none;
}

/* Hamburger Menu Toggle */
.header__menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  cursor: pointer;
}

.header__menu-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: background-color var(--transition-fast),
              transform var(--transition-base),
              opacity var(--transition-base);
}

.header--scrolled .header__menu-bar {
  background-color: var(--color-neutral-dark);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile-menu);
  visibility: hidden;
  pointer-events: none;
}

.mobile-menu--open {
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-menu--open .mobile-menu__overlay {
  opacity: 1;
}

.mobile-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100%;
  background-color: var(--color-white);
  padding: var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.mobile-menu--open .mobile-menu__panel {
  transform: translateX(0);
}

.mobile-menu__close {
  align-self: flex-end;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-neutral-medium);
  margin-bottom: var(--space-xl);
}

.mobile-menu__close:hover {
  color: var(--color-neutral-dark);
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.mobile-menu__link {
  display: block;
  padding: var(--space-md);
  font-size: var(--text-md);
  font-weight: 500;
  color: var(--color-neutral-dark);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
}

.mobile-menu__link:hover {
  background-color: var(--color-neutral-light);
  color: var(--color-primary);
}

.mobile-menu__cta {
  margin-top: auto;
  text-align: center;
}

/* ============================================
   9. HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #080C14 0%, #0D1A30 45%, #0A2A50 100%);
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero__grid-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

.hero__container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-3xl) var(--container-padding);
}

.hero__content {
  max-width: 720px;
}

.hero__heading {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

.hero__subheading {
  font-size: var(--text-md);
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  max-width: 600px;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
}

.hero__actions .btn {
  width: 100%;
  white-space: normal;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

.hero__trust-icon {
  color: var(--color-accent);
  flex-shrink: 0;
}

/* Hero Portrait (shown on desktop only) */
.hero__inner {
  display: block;
}

.hero__portrait {
  display: none;
  position: relative;
  flex-shrink: 0;
}

.hero__portrait-img {
  width: 300px;
  height: 390px;
  object-fit: cover;
  object-position: top center;
  display: block;
  border-radius: 16px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.55);
  border: 4px solid rgba(255, 255, 255, 0.25);
}

.hero__portrait-badge {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(255, 255, 255, 0.97);
  border-radius: var(--border-radius);
  padding: var(--space-sm) var(--space-lg);
  text-align: center;
  box-shadow: var(--shadow-lg);
  white-space: nowrap;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero__portrait-badge strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-neutral-dark);
  line-height: 1.3;
}

.hero__portrait-badge span {
  font-size: var(--text-xs);
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================
   9A. STRATEGIC OUTCOMES
   ============================================ */
.outcomes {
  padding: var(--space-4xl) 0;
  background-color: var(--color-white);
}

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

.outcome-card {
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  background: linear-gradient(135deg, rgba(0, 120, 212, 0.08), rgba(0, 183, 195, 0.05));
  border: 1px solid rgba(0, 120, 212, 0.15);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.outcome-card__eyebrow {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  display: inline-block;
  margin-bottom: var(--space-sm);
}

.outcome-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.outcome-card__text {
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.outcome-card__list {
  display: grid;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
}

.outcome-card__list li {
  position: relative;
  padding-left: var(--space-lg);
}

.outcome-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: 999px;
}

/* ============================================
   10. SERVICES SECTION
   ============================================ */
.services {
  padding: var(--space-4xl) 0;
  background-color: var(--color-white);
}

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

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: transform var(--transition-base),
              box-shadow var(--transition-base);
}

.service-card:focus-within {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

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

.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.service-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.service-card__description {
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.service-card__link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.service-card__link:hover {
  color: var(--color-primary-dark);
}

/* ============================================
   11. WHY TWS SECTION
   ============================================ */
.why-tws {
  padding: var(--space-4xl) 0;
  background-color: var(--color-neutral-light);
}

/* Metrics */
.metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-3xl);
}

.metrics__item {
  text-align: center;
  padding: var(--space-xl);
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.metrics__number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.metrics__label {
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
  font-weight: 500;
}

/* Differentiators */
.differentiators {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-3xl);
}

.diff-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-xl);
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.diff-card__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.diff-card__title {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-xs);
}

.diff-card__text {
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
  line-height: 1.7;
}

/* Certifications */
.certifications {
  text-align: center;
  padding: var(--space-xl);
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-3xl);
}

.certifications__title {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-md);
}

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

.cert-badge {
  display: inline-block;
  padding: 0.4em 1em;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
  background-color: rgba(0, 120, 212, 0.08);
  border: 1px solid rgba(0, 120, 212, 0.2);
  border-radius: 100px;
}

/* Testimonials */
.testimonials {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.testimonial {
  padding: var(--space-xl);
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-primary);
}

.testimonial__text {
  font-size: var(--text-base);
  color: var(--color-neutral-dark);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  font-style: italic;
}

.testimonial__author cite {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.testimonial__author strong {
  font-size: var(--text-sm);
  color: var(--color-neutral-dark);
}

.testimonial__author span {
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
}

/* ============================================
   12. ABOUT SECTION
   ============================================ */
.about {
  padding: var(--space-4xl) 0;
  background-color: var(--color-white);
}

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

.about__photo {
  display: flex;
  justify-content: center;
}

.about__avatar {
  width: 100%;
  max-width: 280px;
  aspect-ratio: 3 / 4;
  border-radius: var(--border-radius-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.7);
  outline: 1px solid rgba(0, 120, 212, 0.25);
}

.about__photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.about__initials {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: 0.05em;
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 120, 212, 0.8), rgba(0, 90, 158, 0.8));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.about__avatar:hover .about__initials,
.about__avatar:focus-within .about__initials {
  opacity: 0.08;
}

.about__name {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-xs);
}

.about__role {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.about__contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.about__contact-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 0.35em 0.8em;
  border-radius: 100px;
  text-decoration: none;
  border: 1.5px solid;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.about__contact-link--phone {
  color: var(--color-primary);
  border-color: rgba(0, 120, 212, 0.35);
  background-color: rgba(0, 120, 212, 0.05);
}

.about__contact-link--phone:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.about__contact-link--email {
  color: var(--color-neutral-medium);
  border-color: var(--color-border);
  background-color: transparent;
}

.about__contact-link--email:hover {
  background-color: var(--color-neutral-light);
  color: var(--color-neutral-dark);
}

.about__contact-link--linkedin {
  color: #0A66C2;
  border-color: rgba(10, 102, 194, 0.35);
  background-color: rgba(10, 102, 194, 0.05);
}

.about__contact-link--linkedin:hover {
  background-color: #0A66C2;
  color: var(--color-white);
  border-color: #0A66C2;
}

.about__content p {
  font-size: var(--text-base);
  color: var(--color-neutral-medium);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

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

.about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.about__stat {
  text-align: center;
  padding: var(--space-lg);
  background-color: var(--color-neutral-light);
  border-radius: var(--border-radius);
}

.about__stat-number {
  display: block;
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.about__stat-label {
  font-size: var(--text-xs);
  color: var(--color-neutral-medium);
  font-weight: 500;
}

/* ============================================
   13. CASE STUDIES SECTION
   ============================================ */
.case-studies {
  padding: var(--space-4xl) 0;
  background-color: var(--color-neutral-light);
}

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

.case-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.case-card:hover {
  box-shadow: var(--shadow-md);
}

.case-card__tag {
  display: inline-block;
  padding: 0.3em 0.8em;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background-color: rgba(0, 183, 195, 0.1);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-md);
}

.case-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-lg);
  line-height: 1.3;
}

.case-card__section {
  margin-bottom: var(--space-md);
}

.case-card__section h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-neutral-dark);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-xs);
}

.case-card__section p {
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
  line-height: 1.7;
}

.case-card__results {
  list-style: none;
  padding: 0;
}

.case-card__results li {
  position: relative;
  padding-left: var(--space-lg);
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
  line-height: 1.7;
  margin-bottom: var(--space-xs);
}

.case-card__results li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: 50%;
}

.case-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* ============================================
   14. PROCESS SECTION
   ============================================ */
.process {
  padding: var(--space-4xl) 0;
  background-color: var(--color-white);
}

.process__timeline {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

/* Vertical line connecting steps */
.process__timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 48px;
  bottom: 48px;
  width: 2px;
  background-color: var(--color-border);
}

.process__step {
  display: flex;
  gap: var(--space-lg);
  position: relative;
}

.process__number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: var(--text-lg);
  font-weight: 800;
  border-radius: 50%;
  position: relative;
  z-index: 1;
}

.process__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-xs);
}

.process__text {
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
  line-height: 1.7;
}

/* ============================================
   15. CTA BANNER
   ============================================ */
.cta-banner {
  padding: var(--space-4xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  text-align: center;
}

.cta-banner__heading {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.cta-banner__text {
  font-size: var(--text-md);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-inline: auto;
}

/* ============================================
   16. CONTACT SECTION
   ============================================ */
.contact {
  padding: var(--space-4xl) 0;
  background-color: var(--color-neutral-light);
}

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

/* Contact Form */
.contact-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.contact-form__group {
  display: flex;
  flex-direction: column;
}

.contact-form__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-xs);
}

.contact-form__required {
  color: var(--color-error);
}

.contact-form__optional {
  font-weight: 400;
  color: var(--color-neutral-medium);
  font-size: var(--text-xs);
}

.contact-form__input,
.contact-form__select,
.contact-form__textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-white);
  color: var(--color-neutral-dark);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  min-height: 44px;
}

.contact-form__input:focus,
.contact-form__select:focus,
.contact-form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.15);
}

.contact-form__input[aria-invalid="true"],
.contact-form__select[aria-invalid="true"],
.contact-form__textarea[aria-invalid="true"] {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(209, 52, 56, 0.1);
}

.contact-form__textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23505050' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.contact-form__error {
  font-size: var(--text-xs);
  color: var(--color-error);
  min-height: 1.2em;
  margin-top: var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Honeypot */
.contact-form__hp {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

.contact-form__actions {
  margin-top: var(--space-sm);
}

.contact-form__submit {
  width: 100%;
}

.contact-form__submit-loading {
  display: none;
  align-items: center;
  gap: var(--space-sm);
}

.contact-form__submit--loading .contact-form__submit-text {
  display: none;
}

.contact-form__submit--loading .contact-form__submit-loading {
  display: inline-flex;
}

.spinner {
  animation: spin 1s linear infinite;
}

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

.contact-form__privacy {
  font-size: var(--text-xs);
  color: var(--color-neutral-medium);
  margin-top: var(--space-sm);
  text-align: center;
}

/* Form Status */
.contact-form__status {
  padding: var(--space-md);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
  font-weight: 500;
  display: none;
}

.contact-form__status--success {
  display: block;
  background-color: rgba(16, 124, 16, 0.08);
  color: var(--color-success);
  border: 1px solid rgba(16, 124, 16, 0.2);
}

.contact-form__status--error {
  display: block;
  background-color: rgba(209, 52, 56, 0.08);
  color: var(--color-error);
  border: 1px solid rgba(209, 52, 56, 0.2);
}

/* Contact Info */
.contact-info__card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.contact-info__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-neutral-dark);
  margin-bottom: var(--space-lg);
}

.contact-info__item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-info__item:last-of-type {
  margin-bottom: var(--space-lg);
}

.contact-info__icon {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.contact-info__item strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-neutral-dark);
  margin-bottom: 2px;
}

.contact-info__item a,
.contact-info__item span {
  font-size: var(--text-sm);
  color: var(--color-neutral-medium);
}

.contact-info__item a:hover {
  color: var(--color-primary);
}

.contact-info__commitment {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: rgba(16, 124, 16, 0.05);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-success);
}

/* ============================================
   17. FOOTER
   ============================================ */
.footer {
  background-color: #080C14;
  color: rgba(255, 255, 255, 0.8);
  padding-top: var(--space-4xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-3xl);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background-color: var(--color-white);
  color: var(--color-white);
  font-weight: 800;
  font-size: var(--text-sm);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  padding: 5px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
}

.footer__logo-image {
  width: 46px;
  height: 46px;
  object-fit: contain;
  display: block;
}

.footer__logo-text {
  font-weight: 700;
  font-size: var(--text-sm);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.footer__description {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.footer__heading {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

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

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

.footer__links a:hover {
  color: var(--color-white);
}

.footer__social {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  background-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

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

.footer__newsletter-form {
  display: flex;
  gap: var(--space-xs);
}

.footer__newsletter-input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-sm);
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  font-size: var(--text-sm);
  min-height: 44px;
}

.footer__newsletter-input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.footer__newsletter-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.3);
}

.footer__newsletter-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  min-height: 44px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
}

.footer__newsletter-btn:hover {
  background-color: var(--color-primary-dark);
}

/* Footer Bottom */
.footer__bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.5);
}

.footer__company {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
}

.footer__back-to-top {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-xs);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-sm);
  transition: color var(--transition-fast),
              border-color var(--transition-fast);
  min-height: 44px;
}

.footer__back-to-top:hover {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   18. SCROLL ANIMATIONS
   ============================================ */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow),
              transform var(--transition-slow);
}

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

/* ============================================
   19. RESPONSIVE BREAKPOINTS
   ============================================ */

/* 480px — Small phones landscape */
@media (min-width: 480px) {
  .hero__actions {
    flex-direction: row;
  }

  .hero__actions .btn {
    width: auto;
    white-space: nowrap;
  }

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

  .contact-form__group--full {
    grid-column: 1 / -1;
  }

  .contact-form__actions {
    grid-column: 1 / -1;
  }

  .contact-form__status {
    grid-column: 1 / -1;
  }
}

/* 768px — Tablets */
@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
  }

  .section-header__title {
    font-size: var(--text-3xl);
  }

  .hero__heading {
    font-size: var(--text-3xl);
  }

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

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

  .metrics {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

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

  .contact__layout {
    grid-template-columns: 1.2fr 0.8fr;
  }

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

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }

  .cta-banner__heading {
    font-size: var(--text-3xl);
  }

  .about__stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 1024px — Desktop */
@media (min-width: 1024px) {
  .header__nav {
    display: block;
  }

  .header__cta {
    display: inline-flex;
  }

  .header__menu-toggle {
    display: none;
  }

  .hero__heading {
    font-size: var(--text-4xl);
  }

  .hero__subheading {
    font-size: var(--text-lg);
  }

  .hero__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
  }

  .hero__content {
    max-width: 560px;
    flex: 1;
  }

  .hero__portrait {
    display: block;
  }

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

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

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

  .about__layout {
    grid-template-columns: 300px 1fr 260px;
    gap: var(--space-3xl);
    align-items: start;
  }

  .about__photo {
    position: sticky;
    top: calc(var(--header-height) + var(--space-xl));
  }

  .about__stats {
    grid-template-columns: 1fr;
    margin-top: 0;
  }

  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  }
}

/* 1200px — Large desktop */
@media (min-width: 1200px) {
  .hero {
    min-height: 100vh;
  }

  .hero__container {
    padding-top: var(--space-5xl);
    padding-bottom: var(--space-5xl);
  }

  .process__timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
  }

  .process__timeline::before {
    display: none;
  }

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

  .process__number {
    align-self: center;
  }
}

/* ============================================
   20. REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  [data-animate] {
    opacity: 1;
    transform: none;
  }

  .hero__grid-pattern {
    animation: none;
  }
}

/* ============================================
   21. PRINT STYLESHEET
   ============================================ */
@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
  }

  .header,
  .mobile-menu,
  .hero__bg,
  .hero__actions,
  .cta-banner,
  .footer__newsletter,
  .footer__social,
  .footer__back-to-top,
  .contact-form,
  .header__menu-toggle,
  .skip-link,
  #back-to-top {
    display: none !important;
  }

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

  section {
    page-break-inside: avoid;
    padding: 1.5rem 0;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }

  a[href^="#"]::after {
    content: "";
  }

  .container {
    max-width: 100%;
    padding: 0 1rem;
  }
}

/* ============================================
   22. DARK MODE (bonus)
   ============================================ */
@media (prefers-color-scheme: dark) {
  :root {
    --color-neutral-dark: #E8E8E8;
    --color-neutral-medium: #A0A0A0;
    --color-neutral-light: #1E1E1E;
    --color-white: #121212;
    --color-border: #333333;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  }

  body {
    background-color: #121212;
  }

  .header--scrolled {
    background-color: #1a1a1a;
  }

  .header--scrolled .header__logo {
    color: #E8E8E8;
  }

  .header--scrolled .header__nav-link {
    color: #A0A0A0;
  }

  .header--scrolled .header__nav-link:hover,
  .header--scrolled .header__nav-link--active {
    color: var(--color-primary-light);
  }

  .header--scrolled .header__menu-bar {
    background-color: #E8E8E8;
  }

  .mobile-menu__panel {
    background-color: #1a1a1a;
  }

  .mobile-menu__link {
    color: #E8E8E8;
  }

  .mobile-menu__link:hover {
    background-color: #252525;
  }

  .service-card,
  .diff-card,
  .metrics__item,
  .certifications,
  .testimonial,
  .case-card,
  .contact-info__card {
    background-color: #1a1a1a;
    border-color: #333;
  }

  .contact-form__input,
  .contact-form__select,
  .contact-form__textarea {
    background-color: #1a1a1a;
    border-color: #333;
    color: #E8E8E8;
  }

  .about__stat {
    background-color: #1a1a1a;
  }

  .footer {
    background-color: #0a0a0a;
  }
}