/*
 * IWH Corporate Website - Global Styles
 * Refined Corporate Aesthetic
 */

/* ============================================
   CSS Custom Properties
   ============================================ */
:root {
  /* Color Palette */
  --color-primary: #0a1628;
  --color-primary-light: #0f2140;
  --color-primary-dark: #060e1a;
  --color-secondary: #faf9f7;
  --color-secondary-muted: #f0eeeb;
  --color-accent: #c9a962;
  --color-accent-hover: #b8972f;
  --color-accent-muted: rgba(201, 169, 98, 0.15);

  /* Text Colors */
  --text-light: #faf9f7;
  --text-light-muted: rgba(250, 249, 247, 0.7);
  --text-dark: #1a1a1a;
  --text-dark-muted: #4a4a4a;

  /* Borders */
  --border-light: rgba(250, 249, 247, 0.1);
  --border-dark: rgba(10, 22, 40, 0.1);
  --border-accent: rgba(201, 169, 98, 0.3);

  /* Shadows */
  --shadow-soft: 0 4px 30px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 8px 40px rgba(0, 0, 0, 0.15);
  --shadow-card: 0 2px 20px rgba(0, 0, 0, 0.08);

  /* Typography */
  --font-headline: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --header-height: 80px;

  /* Transitions */
  --transition-fast: 0.2s ease-out;
  --transition-base: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-light);
  background-color: var(--color-primary);
}

/* Selection */
::selection {
  background-color: var(--color-accent);
  color: var(--color-primary);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  margin-bottom: 1em;
}

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

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

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

.text-mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.text-muted {
  color: var(--text-light-muted);
}

.text-accent {
  color: var(--color-accent);
}

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

.container--narrow {
  max-width: var(--container-narrow);
}

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

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

/* Background variants */
.bg-primary {
  background-color: var(--color-primary);
  color: var(--text-light);
}

.bg-primary-light {
  background-color: var(--color-primary-light);
  color: var(--text-light);
}

.bg-secondary {
  background-color: var(--color-secondary);
  color: var(--text-dark);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
  background: rgba(10, 22, 40, 0.95);
  box-shadow: var(--shadow-soft);
}

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

.header__logo {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-light);
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav__link {
  position: relative;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-light-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--text-light);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

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

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: var(--space-md);
  padding-left: var(--space-md);
  border-left: 1px solid var(--border-light);
}

.lang-toggle__link {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-light-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.lang-toggle__link:hover {
  color: var(--text-light);
}

.lang-toggle__link--active {
  color: var(--color-accent);
}

/* Mobile Menu Button */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle__line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-light);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle__line:nth-child(1) {
  transform: translateY(-6px);
}

.nav-toggle__line:nth-child(3) {
  transform: translateY(6px);
}

.nav-toggle--active .nav-toggle__line:nth-child(1) {
  transform: translateY(0) rotate(45deg);
}

.nav-toggle--active .nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.nav-toggle--active .nav-toggle__line:nth-child(3) {
  transform: translateY(-2px) rotate(-45deg);
}

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

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(201, 169, 98, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(15, 33, 64, 0.5) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero__headline {
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.hero__subheadline {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--text-light-muted);
  max-width: 700px;
  margin-bottom: var(--space-xl);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.hero__cta {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

/* Decorative line */
.hero__accent {
  position: absolute;
  right: 10%;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 200px;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--color-accent) 20%,
    var(--color-accent) 80%,
    transparent
  );
  opacity: 0.3;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 1rem 2rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
}

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

.btn--primary:hover {
  background-color: transparent;
  color: var(--color-accent);
}

.btn--outline {
  background-color: transparent;
  color: var(--text-light);
  border-color: var(--border-light);
}

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

.btn--large {
  padding: 1.25rem 2.5rem;
  font-size: 0.9375rem;
}

/* ============================================
   Value Pillars
   ============================================ */
.pillars {
  position: relative;
}

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

.pillar {
  position: relative;
  padding: var(--space-xl);
  background: linear-gradient(
    135deg,
    rgba(15, 33, 64, 0.5) 0%,
    rgba(10, 22, 40, 0.3) 100%
  );
  border: 1px solid var(--border-light);
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.pillar:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
}

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

.pillar__icon svg {
  width: 32px;
  height: 32px;
  stroke-width: 1.5;
}

.pillar__title {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--text-light);
}

.pillar__description {
  font-size: 1rem;
  color: var(--text-light-muted);
  line-height: 1.8;
}

/* ============================================
   Industries Section
   ============================================ */
.industries {
  position: relative;
}

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

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

.industries__subtitle {
  font-size: 1.125rem;
  color: var(--text-dark-muted);
  max-width: 600px;
  margin: 0 auto;
}

.industries__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.industry {
  padding: var(--space-lg);
  background-color: var(--color-secondary);
  border: 1px solid var(--border-dark);
  text-align: center;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.industry:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card);
}

.industry__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-md);
  color: var(--color-accent);
}

.industry__icon svg {
  width: 36px;
  height: 36px;
  stroke-width: 1.5;
}

.industry__title {
  font-family: var(--font-headline);
  font-size: 1.125rem;
  color: var(--text-dark);
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
  margin-bottom: var(--space-xl);
}

.section-header--center {
  text-align: center;
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  margin-bottom: var(--space-sm);
}

.section-divider {
  width: 60px;
  height: 1px;
  background-color: var(--color-accent);
  margin: var(--space-md) auto 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: var(--color-primary-dark);
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid var(--border-light);
}

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

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-light);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.footer__tagline {
  font-size: 0.9375rem;
  color: var(--text-light-muted);
  line-height: 1.7;
}

.footer__nav-title {
  font-family: var(--font-headline);
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: var(--space-md);
}

.footer__nav-list {
  list-style: none;
}

.footer__nav-link {
  display: block;
  font-size: 0.875rem;
  color: var(--text-light-muted);
  text-decoration: none;
  padding: 0.375rem 0;
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-light);
}

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

.footer__legal {
  display: flex;
  gap: var(--space-md);
}

.footer__legal-link {
  font-size: 0.8125rem;
  color: var(--text-light-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Scroll Reveal Classes */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.reveal--delay-1 {
  transition-delay: 0.1s;
}

.reveal--delay-2 {
  transition-delay: 0.2s;
}

.reveal--delay-3 {
  transition-delay: 0.3s;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Tablet (768px and down) */
@media (max-width: 768px) {
  :root {
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 5rem;
  }

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

  .nav__list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    background-color: var(--color-primary);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .nav__list--open {
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    font-size: 1.125rem;
  }

  .lang-toggle {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    margin: 0;
    padding: 0;
    border: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .nav__list--open + .lang-toggle,
  .lang-toggle--visible {
    opacity: 1;
    visibility: visible;
  }

  /* Pillars */
  .pillars__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .pillar {
    padding: var(--space-lg);
  }

  /* Industries */
  .industries__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Footer */
  .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    text-align: center;
  }

  .footer__brand {
    max-width: none;
  }

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

  /* Hero accent */
  .hero__accent {
    display: none;
  }
}

/* Mobile (480px and down) */
@media (max-width: 480px) {
  :root {
    --space-lg: 2rem;
    --space-xl: 2.5rem;
    --space-2xl: 3rem;
  }

  .container {
    padding: 0 var(--space-sm);
  }

  /* Industries */
  .industries__grid {
    grid-template-columns: 1fr;
  }

  .industry {
    padding: var(--space-md);
  }

  /* Buttons */
  .btn {
    width: 100%;
    justify-content: center;
  }

  .btn--large {
    padding: 1rem 1.5rem;
  }
}

/* Large screens (1400px and up) */
@media (min-width: 1400px) {
  :root {
    --container-max: 1320px;
  }

  .hero__content {
    max-width: 1000px;
  }
}