/* =========================================================
   Base CSS — Shared structural styles
   Each site supplies its own theme.css for colours
   ========================================================= */

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

:root {
  --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;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   400ms ease;

  --header-height: 72px;
  --container-max: 1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text-secondary);
  background: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

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

/* ── Typography ── */
h1, h2, h3, h4 {
  color: var(--color-text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
h1 { font-size: clamp(2rem, 1.5rem + 2.5vw, 3.25rem); }
h2 { font-size: clamp(1.75rem, 1.4rem + 1.5vw, 2.5rem); }
h3 { font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem); font-weight: 600; }

/* ── Section Heading with underline bar ── */
.section__heading {
  text-align: center;
  margin-bottom: var(--space-3xl);
  position: relative;
  padding-bottom: var(--space-lg);
}
.section__heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* ══════════════════════════════════════════
   HEADER
   ══════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: var(--color-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background var(--transition-normal),
              box-shadow var(--transition-normal),
              border-color var(--transition-normal);
  border-bottom: 1px solid transparent;
}
.site-header.header--scrolled {
  background: rgba(10, 14, 26, 0.95);
  border-bottom-color: var(--color-accent-subtle);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.header__logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  transition: color var(--transition-normal);
  white-space: nowrap;
}
.header__logo:hover { color: var(--color-accent); }

/* Nav */
.site-nav ul {
  display: flex;
  gap: var(--space-xs);
}
.site-nav a {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--color-text-secondary);
  position: relative;
  transition: color var(--transition-normal);
}
.site-nav a::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 15%; right: 15%;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
}
.site-nav a:hover::after,
.site-nav a.active::after {
  transform: scaleX(1);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  padding: 0;
  z-index: 10;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}
.nav-toggle--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle--open span:nth-child(2) { opacity: 0; }
.nav-toggle--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════════
   HERO
   ══════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-height) + var(--space-4xl)) var(--space-xl) var(--space-4xl);
  background: var(--gradient-hero);
  overflow: hidden;
}
/* Dot pattern overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--color-accent) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.04;
  pointer-events: none;
}
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 780px;
}
.hero__title { margin-bottom: var(--space-lg); }
.hero__subtitle {
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

/* Hero orbs */
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: orbFloat ease-in-out infinite;
}
.hero__orb--1 {
  width: 500px; height: 500px;
  top: -10%; right: -8%;
  background: var(--color-accent);
  opacity: 0.15;
  animation-duration: 14s;
}
.hero__orb--2 {
  width: 350px; height: 350px;
  bottom: -5%; left: -5%;
  background: var(--color-accent);
  opacity: 0.10;
  animation-duration: 18s;
  animation-delay: -4s;
}
.hero__orb--3 {
  width: 200px; height: 200px;
  top: 40%; left: 15%;
  background: var(--color-accent-hover);
  opacity: 0.08;
  animation-duration: 10s;
  animation-delay: -8s;
}
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(30px, -20px) scale(1.05); }
  66%      { transform: translate(-20px, 15px) scale(0.95); }
}

/* ── CTA Button ── */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-bg-primary);
  background: var(--color-accent);
  border-radius: var(--radius-md);
  transition: transform var(--transition-normal),
              box-shadow var(--transition-normal),
              background var(--transition-normal);
}
.btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.25);
}

/* ══════════════════════════════════════════
   STATS BAR
   ══════════════════════════════════════════ */
.stats-bar {
  background: var(--color-section-alt-bg);
  border-top: 1px solid var(--color-accent-subtle);
  border-bottom: 1px solid var(--color-accent-subtle);
  padding: var(--space-3xl) 0;
}
.stats-bar__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}
.stat__number {
  font-size: clamp(2rem, 1.6rem + 1.5vw, 2.75rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
}
.stat__label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.03em;
  margin-top: var(--space-xs);
}

/* ══════════════════════════════════════════
   SECTIONS (general)
   ══════════════════════════════════════════ */
.section {
  padding: var(--space-4xl) 0;
}
.section--alt {
  background: var(--color-section-alt-bg);
}

/* ══════════════════════════════════════════
   SERVICE / FEATURE CARDS
   ══════════════════════════════════════════ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.card-grid--features {
  max-width: 1000px;
  margin: 0 auto;
}

.service-card,
.feature-item {
  position: relative;
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-normal),
              box-shadow var(--transition-normal);
  overflow: hidden;
}
/* Glassmorphism border */
.service-card::before,
.feature-item::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, var(--color-accent-subtle) 0%, transparent 50%, var(--color-accent-subtle) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  transition: background var(--transition-normal);
}
.service-card:hover,
.feature-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}
.service-card:hover::before,
.feature-item:hover::before {
  background: linear-gradient(135deg, var(--color-accent) 0%, transparent 50%, var(--color-accent) 100%);
}

/* Card icon */
.card-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  transition: background var(--transition-normal);
}
.card-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke var(--transition-normal);
}
.service-card:hover .card-icon,
.feature-item:hover .card-icon {
  background: var(--color-accent);
}
.service-card:hover .card-icon svg,
.feature-item:hover .card-icon svg {
  stroke: var(--color-bg-primary);
}

.service-card h3,
.feature-item h3 {
  text-align: center;
  margin-bottom: var(--space-md);
}
.service-card p,
.feature-item p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* Stagger animation delays */
.service-card:nth-child(1) { transition-delay: 0s; }
.service-card:nth-child(2) { transition-delay: 0.1s; }
.service-card:nth-child(3) { transition-delay: 0.2s; }
.service-card:nth-child(4) { transition-delay: 0.15s; }
.service-card:nth-child(5) { transition-delay: 0.25s; }
.service-card:nth-child(6) { transition-delay: 0.35s; }
.feature-item:nth-child(1) { transition-delay: 0s; }
.feature-item:nth-child(2) { transition-delay: 0.1s; }
.feature-item:nth-child(3) { transition-delay: 0.2s; }

/* ══════════════════════════════════════════
   SUPPORT SECTION (centered block)
   ══════════════════════════════════════════ */
.support-block {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.support-block .card-icon {
  width: 72px;
  height: 72px;
  margin-bottom: var(--space-xl);
}
.support-block .card-icon svg {
  width: 32px;
  height: 32px;
}
.support-block h2 {
  margin-bottom: var(--space-lg);
}
.support-block p {
  font-size: 1.0625rem;
  line-height: 1.8;
}

/* ══════════════════════════════════════════
   CONTACT
   ══════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-3xl);
  max-width: 960px;
  margin: 0 auto;
}
.contact-info h3 {
  margin-bottom: var(--space-md);
}
.contact-info > p {
  margin-bottom: var(--space-2xl);
  line-height: 1.8;
}
.contact-detail {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.contact-detail .card-icon {
  width: 44px;
  height: 44px;
  margin: 0;
  flex-shrink: 0;
}
.contact-detail .card-icon svg {
  width: 20px;
  height: 20px;
}
.contact-detail__label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}
.contact-detail__value {
  color: var(--color-text-primary);
  font-weight: 500;
}
.contact-detail__value a {
  transition: color var(--transition-normal);
}
.contact-detail__value a:hover {
  color: var(--color-accent);
}

/* Form */
.contact-form-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
.form-group { margin-bottom: var(--space-md); }
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-accent-subtle);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-normal),
              box-shadow var(--transition-normal);
  font-family: inherit;
}
.form-group textarea {
  min-height: 120px;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}
.form-group input.input--error,
.form-group textarea.input--error {
  border-color: #ef4444;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}
.btn--full { width: 100%; text-align: center; border: none; }

.form-success {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
}
.form-success svg { margin: 0 auto var(--space-lg); }
.form-success h3 {
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}
.form-success p { color: var(--color-text-secondary); }

/* ══════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════ */
.site-footer {
  background: var(--color-footer-bg);
  border-top: 1px solid var(--color-accent-subtle);
  padding: var(--space-2xl) 0 var(--space-lg);
}
.footer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-accent-subtle);
  margin-bottom: var(--space-lg);
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.footer__logo { height: 32px; width: auto; }
.footer__tagline {
  font-size: 0.8125rem;
  font-style: italic;
  color: var(--color-text-muted);
}
.footer__nav {
  display: flex;
  gap: var(--space-md);
}
.footer__nav a {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-normal);
}
.footer__nav a:hover { color: var(--color-accent); }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer__email a {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-normal);
}
.footer__email a:hover { color: var(--color-accent); }
.footer__copy {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}
.footer__name-img {
  height: 14px;
  width: auto;
  display: inline-block;
  vertical-align: middle;
}

/* ══════════════════════════════════════════
   BACK-TO-TOP
   ══════════════════════════════════════════ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity var(--transition-normal),
              transform var(--transition-normal),
              background var(--transition-normal);
  z-index: 900;
}
.back-to-top svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-bg-primary);
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--color-accent-hover);
  transform: translateY(-3px);
}

/* ══════════════════════════════════════════
   FADE-IN ANIMATIONS
   ══════════════════════════════════════════ */
.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.fade-in-up {
  opacity: 0;
  transform: translateY(48px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.fade-in.is-visible,
.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════ */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0; right: 0;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-accent-subtle);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal),
                opacity var(--transition-normal);
  }
  .site-nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav ul {
    flex-direction: column;
    padding: var(--space-lg);
    text-align: center;
  }
  .site-nav a { font-size: 1rem; padding: var(--space-sm) 0; }

  .hero { min-height: 70vh; }
  .stats-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-info { text-align: center; }
  .contact-detail { justify-content: center; }
  .section { padding: var(--space-3xl) 0; }

  .footer__top,
  .footer__bottom { flex-direction: column; text-align: center; gap: var(--space-md); }
  .footer__brand { flex-direction: column; }
  .footer__nav { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  .hero { min-height: 60vh; }
  .card-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .section { padding: var(--space-2xl) 0; }
  .container { padding: 0 var(--space-md); }
}

/* ── Accessibility ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .fade-in, .fade-in-up {
    opacity: 1;
    transform: none;
  }
  .hero__orb { animation: none; }
}