/* ============================================
   BASE.CSS — Shared structural styles
   Both sites reference this file.
   All colors come from CSS custom properties
   defined in each site's theme.css.
   ============================================ */

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

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

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

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input, textarea {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}

button {
  cursor: pointer;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-primary);
  font-family: var(--font-family-heading);
  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;
}

p {
  margin-bottom: 0;
}

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

.section {
  padding: var(--space-4xl) 0;
}

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

.section__heading {
  text-align: center;
  margin-bottom: var(--space-lg);
  position: relative;
}

.section__heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  margin: var(--space-md) auto 0;
  border-radius: 2px;
}

.section__intro {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-2xl);
  font-size: clamp(0.9375rem, 0.9rem + 0.2vw, 1.0625rem);
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--color-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-normal), background var(--transition-normal);
}

.site-header.header--scrolled {
  border-bottom-color: var(--color-accent-subtle);
  background: var(--color-header-bg-solid, var(--color-header-bg));
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  font-family: var(--font-family-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  transition: color var(--transition-fast);
}

.header__logo:hover {
  color: var(--color-accent);
}

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

.nav-link {
  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);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-accent);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 70%;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
  transition: transform var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero --- */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + var(--space-4xl)) var(--space-xl) var(--space-4xl);
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--hero-pattern, none);
  opacity: 0.04;
  pointer-events: none;
}

.hero__inner {
  max-width: 780px;
}

.hero__title {
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.1875rem);
  font-weight: 300;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.hero__cta {
  display: inline-block;
  padding: var(--space-md) var(--space-2xl);
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hero__cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--color-accent-subtle);
}

/* --- Service Cards --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.service-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-accent-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
}

.service-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);
}

.service-card:hover .service-card__icon {
  background: var(--color-accent);
}

.service-card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-accent);
  stroke-width: 1.75;
  fill: none;
  transition: stroke var(--transition-normal);
}

.service-card:hover .service-card__icon svg {
  stroke: var(--color-bg-primary);
}

.service-card__title {
  margin-bottom: var(--space-md);
}

.service-card__text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* --- Customer Support (content section) --- */
.content-section {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.content-section__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-xl);
}

.content-section__icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--color-accent);
  stroke-width: 1.75;
  fill: none;
}

.content-section__text {
  font-size: clamp(0.9375rem, 0.9rem + 0.2vw, 1.0625rem);
  line-height: 1.8;
}

/* --- Features (Why Choose Us) --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.feature-item {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--color-accent-subtle);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.feature-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
}

.feature-item__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);
}

.feature-item__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-accent);
  stroke-width: 1.75;
  fill: none;
}

.feature-item__title {
  margin-bottom: var(--space-sm);
}

.feature-item__text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* --- Contact Form --- */
.contact-wrapper {
  max-width: 640px;
  margin: 0 auto;
}

.contact-form {
  background: var(--color-bg-card);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-accent-subtle);
}

.form-row {
  display: flex;
  gap: var(--space-lg);
}

.form-row--half .form-group {
  flex: 1;
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.02em;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-bg-primary);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

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

.form-btn {
  width: 100%;
  padding: var(--space-md) var(--space-2xl);
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  margin-top: var(--space-sm);
}

.form-btn:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--color-accent-subtle);
}

.form-success {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--color-accent);
  font-weight: 500;
  font-size: 1.0625rem;
}

/* --- Footer --- */
.site-footer {
  background: var(--color-footer-bg);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-accent-subtle);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  flex-wrap: wrap;
}

.footer__logo {
  height: 28px;
  width: auto;
  opacity: 0.85;
  transition: opacity var(--transition-fast);
}

.footer__logo:hover {
  opacity: 1;
}

.footer__email {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__email:hover {
  color: var(--color-accent);
}

.footer__year {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- Responsive: Tablet (768px) --- */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }

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

  .services-grid,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }

  .hero {
    min-height: 70vh;
  }

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

  .header__nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-accent-subtle);
    padding: var(--space-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

  .header__nav.nav-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

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

  .nav-link {
    display: block;
    padding: var(--space-md);
    text-align: center;
    font-size: 1rem;
  }

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

/* --- Responsive: Mobile (480px) --- */
@media (max-width: 480px) {
  .section {
    padding: var(--space-2xl) 0;
  }

  .services-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 60vh;
    padding-top: calc(var(--header-height) + var(--space-2xl));
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

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

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

/* ============================================
   ENHANCEMENTS
   ============================================ */

/* --- 1. Scroll-triggered 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.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* Stagger children inside grids */
.services-grid .service-card.fade-in:nth-child(2),
.features-grid .feature-item.fade-in:nth-child(2) {
  transition-delay: 0.1s;
}

.services-grid .service-card.fade-in:nth-child(3),
.features-grid .feature-item.fade-in:nth-child(3) {
  transition-delay: 0.2s;
}

.services-grid .service-card.fade-in:nth-child(4) {
  transition-delay: 0.15s;
}

.services-grid .service-card.fade-in:nth-child(5) {
  transition-delay: 0.25s;
}

.services-grid .service-card.fade-in:nth-child(6) {
  transition-delay: 0.35s;
}

/* --- 2. Hero visual depth — gradient orbs --- */
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
  animation: orbFloat 12s ease-in-out infinite;
}

.hero__orb--1 {
  width: 500px;
  height: 500px;
  background: var(--color-accent);
  top: -15%;
  right: -10%;
  animation-duration: 14s;
}

.hero__orb--2 {
  width: 350px;
  height: 350px;
  background: var(--color-accent);
  bottom: -10%;
  left: -8%;
  animation-duration: 18s;
  animation-delay: -4s;
  opacity: 0.1;
}

.hero__orb--3 {
  width: 200px;
  height: 200px;
  background: var(--color-accent-hover);
  top: 40%;
  left: 30%;
  animation-duration: 10s;
  animation-delay: -8s;
  opacity: 0.08;
}

@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); }
}

/* --- 3. Stats counter bar --- */
.stats-bar {
  background: var(--color-section-alt-bg);
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--color-accent-subtle);
  border-bottom: 1px solid var(--color-accent-subtle);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-item__number {
  font-size: clamp(2rem, 1.5rem + 2vw, 2.75rem);
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-family-heading);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.stat-item__label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
  letter-spacing: 0.03em;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
}

/* --- 4. Service card left-aligned text --- */
.service-card__text {
  text-align: left;
}

/* --- 5. Contact two-column layout --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: var(--space-2xl);
  align-items: start;
  max-width: 960px;
  margin: 0 auto;
}

.contact-info {
  padding: var(--space-2xl) 0;
}

.contact-info__heading {
  font-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  margin-bottom: var(--space-lg);
}

.contact-info__text {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-detail__icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 50%;
  background: var(--color-accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-detail__icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-accent);
  stroke-width: 1.75;
  fill: none;
}

.contact-detail__label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.contact-detail__value {
  font-size: 0.9375rem;
  color: var(--color-text-primary);
}

.contact-detail__value a {
  transition: color var(--transition-fast);
}

.contact-detail__value a:hover {
  color: var(--color-accent);
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .contact-info {
    padding: 0;
    text-align: center;
  }

  .contact-detail {
    justify-content: center;
  }
}

/* --- 6. Gradient borders (glassmorphism-lite) --- */
.service-card,
.feature-item {
  border: 1px solid transparent;
  background-clip: padding-box;
  position: relative;
}

.service-card::before,
.feature-item::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius-lg) + 1px);
  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);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  opacity: 0.6;
}

.service-card:hover::before,
.feature-item:hover::before {
  background: linear-gradient(
    135deg,
    var(--color-accent) 0%,
    transparent 40%,
    var(--color-accent) 100%
  );
  opacity: 1;
}

/* --- 7. Back-to-top button --- */
.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal), background var(--transition-fast);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  border: none;
}

.back-to-top svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--color-accent-hover);
  transform: translateY(-3px);
}

/* --- 8. Enhanced footer --- */
.footer__inner {
  flex-direction: column;
  gap: var(--space-lg);
  text-align: center;
}

.footer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-accent-subtle);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-xs);
}

.footer__tagline {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.footer__nav {
  display: flex;
  gap: var(--space-lg);
}

.footer__nav a {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__nav a:hover {
  color: var(--color-accent);
}

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

@media (max-width: 768px) {
  .footer__top {
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
  }

  .footer__brand {
    align-items: center;
  }

  .footer__nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

/* --- 10. Polished header scroll transition --- */
.site-header {
  transition: border-color var(--transition-normal),
              background var(--transition-normal),
              box-shadow var(--transition-normal);
}

.site-header.header--scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .fade-in-up {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__orb {
    animation: none;
  }

  .back-to-top {
    transition: opacity var(--transition-fast);
  }
}