/* ============================================
   Octodix — Global styles
   Premium corporate single-page layout
   ============================================ */

:root {
  /* Core palette */
  --color-bg: #f4f6fa;
  --color-surface: #ffffff;
  --color-ink: #0a1628;
  --color-ink-muted: #4a5568;
  --color-border: rgba(10, 22, 40, 0.08);
  --color-primary: #0c2340;
  --color-primary-light: #143a5c;
  --color-accent: #0d9488;
  --color-accent-hover: #0f766e;
  --color-glow: rgba(13, 148, 136, 0.35);

  /* Typography */
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Outfit", var(--font-sans);

  /* Spacing & radius */
  --space-xs: 0.35rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4.5rem;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(10, 22, 40, 0.06);
  --shadow-md: 0 8px 30px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 20px 50px rgba(10, 22, 40, 0.12);

  /* Layout */
  --header-h: 72px;
  --container: min(1180px, 100% - 2.5rem);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-ink-muted);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* Arabic-friendly line height */
html[lang="ar"] body {
  line-height: 1.75;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-ink);
  font-weight: 600;
  line-height: 1.2;
}

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

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

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

.container {
  width: var(--container);
  margin-inline: auto;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.95);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  transition: color var(--transition);
}

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

/* Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.site-header.nav-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.site-header.nav-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink-muted);
  position: relative;
  padding-block: var(--space-xs);
}

.nav-link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: var(--nav-link-origin, inline-end);
  transition: transform var(--transition);
}

html[dir="ltr"] .nav-link::after {
  --nav-link-origin: inline-start;
}

html[dir="rtl"] .nav-link::after {
  transform-origin: inline-end;
}

.nav-link:hover {
  color: var(--color-ink);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

/* Language switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding-inline-start: var(--space-md);
  border-inline-start: 1px solid var(--color-border);
}

.lang-sep {
  color: var(--color-border);
  user-select: none;
  opacity: 0.6;
}

.lang-btn {
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.35rem 0.5rem;
  border: none;
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

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

.lang-btn.active {
  color: var(--color-surface);
  background: var(--color-primary);
}

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

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: calc(var(--header-h) + var(--space-2xl)) var(--space-2xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(13, 148, 136, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(12, 35, 64, 0.08), transparent 50%),
    linear-gradient(165deg, #eef2f8 0%, var(--color-bg) 45%, #e8eef6 100%);
  z-index: 0;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(10, 22, 40, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 22, 40, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, black, transparent);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero-eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin: 0 0 var(--space-sm);
}

.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  margin: 0 0 var(--space-md);
  letter-spacing: -0.03em;
}

.hero-lead {
  font-size: 1.0625rem;
  max-width: 34rem;
  margin: 0 0 var(--space-lg);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(12, 35, 64, 0.25);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  color: #fff;
  box-shadow: 0 8px 28px rgba(12, 35, 64, 0.3);
}

.btn-outline {
  background: transparent;
  border-color: rgba(10, 22, 40, 0.15);
  color: var(--color-ink);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-full {
  width: 100%;
}

/* Hero visual card */
.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-card {
  position: relative;
  width: 100%;
  max-width: 400px;
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.hero-card-glow {
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.2), transparent 50%, rgba(12, 35, 64, 0.15));
  z-index: -1;
  filter: blur(20px);
  opacity: 0.7;
}

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

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding-block: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.hero-stat:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--color-ink-muted);
}

/* ---------- Sections ---------- */
.section {
  padding-block: var(--space-2xl);
}

.section:nth-of-type(even) {
  background: var(--color-surface);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.02em;
}

.section-subtitle {
  margin: 0;
  font-size: 1.0625rem;
}

/* Cards grid */
.cards-grid {
  display: grid;
  gap: var(--space-md);
}

.cards-grid--products {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.cards-grid--services {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.section:nth-of-type(even) .card {
  background: var(--color-bg);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(13, 148, 136, 0.25);
}

.card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  background: rgba(13, 148, 136, 0.1);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.card-icon svg {
  width: 32px;
  height: 32px;
}

.card-icon--sm {
  width: 48px;
  height: 48px;
}

.card-icon--sm svg {
  width: 26px;
  height: 26px;
}

.card-title {
  font-size: 1.125rem;
  margin: 0 0 var(--space-sm);
}

.card-text {
  margin: 0;
  font-size: 0.9375rem;
}

.card-service--wide {
  grid-column: 1 / -1;
}

@media (min-width: 900px) {
  .card-service--wide {
    grid-column: span 2;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-md);
    align-items: start;
  }

  .card-service--wide .card-icon {
    margin-bottom: 0;
  }
}

/* ---------- About ---------- */
.about-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about-lead {
  font-size: 1.125rem;
  color: var(--color-ink);
  margin: 0 0 var(--space-lg);
}

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

.about-block {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

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

.about-block-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  background: rgba(13, 148, 136, 0.1);
  border-radius: var(--radius-sm);
}

.about-block-icon svg {
  width: 22px;
  height: 22px;
}

.about-block-title {
  font-size: 1rem;
  margin: 0 0 0.35rem;
}

.about-block-text {
  margin: 0;
  font-size: 0.9375rem;
}

.about-aside {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.about-highlight {
  padding: var(--space-lg);
  background: linear-gradient(145deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #e8eef6;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.about-highlight-title {
  color: #fff;
  font-size: 1.25rem;
  margin: 0 0 var(--space-md);
}

.about-list {
  margin: 0;
  padding-inline-start: 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.about-list li {
  margin-bottom: 0.5rem;
}

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

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

.metric {
  padding: var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-align: center;
  transition: border-color var(--transition);
}

.metric:hover {
  border-color: rgba(13, 148, 136, 0.3);
}

.metric-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.metric-label {
  font-size: 0.8125rem;
  color: var(--color-ink-muted);
}

/* ---------- Contact ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-info-card {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.section-contact .contact-info-card {
  background: var(--color-bg);
}

.contact-info-row {
  display: flex;
  gap: var(--space-md);
  padding-block: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.contact-info-row:first-child {
  padding-top: 0;
}

.contact-info-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact-info-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  background: rgba(13, 148, 136, 0.1);
  border-radius: var(--radius-sm);
}

.contact-info-icon svg {
  width: 20px;
  height: 20px;
}

.contact-info-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  margin-bottom: 0.25rem;
}

.contact-info-value {
  font-size: 0.9375rem;
  color: var(--color-ink);
  word-break: break-word;
}

a.contact-info-value {
  color: var(--color-accent);
}

.contact-form {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.form-row {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 0.35rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-ink);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

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

.form-note {
  margin-top: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-accent);
}

.form-note[hidden] {
  display: none;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  padding-block: var(--space-xl) 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: #fff;
  display: block;
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  max-width: 28rem;
}

.footer-heading {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.55);
  margin: 0 0 var(--space-md);
}

.footer-links,
.footer-social {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.9375rem;
}

.footer-links a:hover {
  color: #5eead4;
}

.footer-social li {
  margin-bottom: 0.65rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.9375rem;
}

.social-link svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.9;
}

.social-link:hover {
  color: #5eead4;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-block: var(--space-md);
}

.copyright {
  margin: 0;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal[data-delay="100"] {
  transition-delay: 0.1s;
}

.reveal[data-delay="120"] {
  transition-delay: 0.12s;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  html[dir="rtl"] .hero-grid {
    text-align: center;
  }

  .hero-lead {
    margin-inline: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .about-layout,
  .contact-layout,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .card-service--wide {
    grid-column: 1;
    display: block;
  }

  .card-service--wide .card-icon {
    margin-bottom: var(--space-md);
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset-block-start: var(--header-h);
    inset-inline: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.35s ease, opacity 0.25s ease, visibility 0.25s;
  }

  .site-header.nav-open .nav {
    max-height: 100vh;
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: var(--space-md);
  }

  .nav-link {
    display: block;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }

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

  .lang-switcher {
    border-inline-start: none;
    padding-inline-start: 0;
    padding-top: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
  }

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

  .about-metrics {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --container: min(1180px, 100% - 1.25rem);
  }

  .btn {
    width: 100%;
  }

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

  .about-metrics {
    grid-template-columns: 1fr;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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