/* ===== DESIGN TOKENS ===== */
:root {
  --color-primary: #1e3a5f;
  --color-primary-light: #2a5a8f;
  --color-primary-dark: #0f2440;
  --color-accent: #3b82f6;
  --color-accent-light: #60a5fa;
  --color-accent-glow: rgba(59, 130, 246, 0.12);

  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fb;
  --color-bg-card: #ffffff;

  --color-text: #1a1a2e;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --max-width: 1120px;
  --header-height: 72px;
  --bottom-nav-height: 0px;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  padding-bottom: var(--bottom-nav-height);
}

/* Typography orphan prevention */
p,
h1,
h2,
h3,
.hero-subtitle,
.contact-desc,
.about-text p {
  text-wrap: pretty;
}

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

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

::selection {
  background-color: var(--color-accent);
  color: white;
}

/* ===== UTILITIES ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-glow);
  border-radius: var(--radius-full);
  border: 1px solid rgba(59, 130, 246, 0.15);
}

.section-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.section-heading {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-10);
  max-width: 640px;
}

section {
  padding: var(--space-24) 0;
}

section:nth-child(even) {
  background: var(--color-bg-alt);
}

/* ===== FADE-IN ANIMATION ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.fade-in-delay-1 {
  transition-delay: 0.1s;
}

.fade-in-delay-2 {
  transition-delay: 0.2s;
}

.fade-in-delay-3 {
  transition-delay: 0.3s;
}

.fade-in-delay-4 {
  transition-delay: 0.4s;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-primary);
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: var(--text-sm);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav a {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.nav a:hover {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

.lang-toggle {
  display: flex;
  align-items: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  padding: 3px;
  border: 1px solid var(--color-border);
}

.lang-toggle button {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: transparent;
  color: var(--color-text-muted);
}

.lang-toggle button.active {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

/* ===== BOTTOM TAB NAVIGATION (mobile only) ===== */
.bottom-nav {
  display: none;
}

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

.hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -15%;
  width: 60%;
  height: 130%;
  background: radial-gradient(ellipse at center, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 700px;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-4);
  letter-spacing: 0.05em;
}

.hero-heading {
  font-size: var(--text-5xl);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
  white-space: pre-line;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-10);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  background: var(--color-primary);
  color: white;
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(30, 58, 95, 0.25);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 58, 95, 0.3);
  color: white;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  background: transparent;
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-bg-alt);
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn-primary:hover .btn-arrow {
  transform: translateX(3px);
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.service-card {
  background: var(--color-bg-card);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.service-card:hover::before {
  transform: scaleX(1);
}

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

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--color-accent);
  transition: all var(--transition-base);
}

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

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.service-card p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.service-features {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.service-features li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-light);
  font-weight: 500;
}

/* ===== WHY US ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.stat-card {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

.points-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.point-card {
  padding: var(--space-6);
}

.point-number {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: rgba(59, 130, 246, 0.15);
  margin-bottom: var(--space-3);
  line-height: 1;
}

.point-card h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.point-card p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== ABOUT ===== */
.about-layout {
  max-width: 720px;
}

.about-text p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

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

.about-location {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-light);
}

.about-location svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ===== CONTACT ===== */
.contact-wrapper {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.contact-desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
  line-height: 1.8;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-base);
  min-width: 320px;
  justify-content: center;
}

.contact-link:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: var(--color-primary);
}

.contact-link svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact-link-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.6);
  padding: var(--space-8) 0;
  text-align: center;
  font-size: var(--text-sm);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
    --bottom-nav-height: 64px;
  }

  /* Hide desktop nav, show bottom nav */
  .nav {
    display: none;
  }

  .bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-border-light);
    z-index: 1000;
    align-items: center;
    justify-content: space-around;
    padding: 0 var(--space-2);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-2) var(--space-2);
    font-size: 10px;
    font-weight: 500;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
    border-radius: var(--radius-sm);
    min-width: 60px;
  }

  .bottom-nav a.active {
    color: var(--color-accent);
  }

  .bottom-nav a svg {
    stroke-width: 1.8;
  }

  .bottom-nav a.active svg {
    stroke-width: 2.2;
  }

  /* Adjust scroll padding for bottom nav */
  html {
    scroll-padding-bottom: var(--bottom-nav-height);
  }

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

  .hero-subtitle {
    font-size: var(--text-base);
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-heading {
    font-size: var(--text-2xl);
  }

  section {
    padding: var(--space-16) 0;
  }

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

  .stats-row {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
  }

  .stat-card {
    padding: var(--space-5) var(--space-3);
  }

  .stat-value {
    font-size: var(--text-2xl);
  }

  .stat-label {
    font-size: var(--text-xs);
  }

  .points-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .contact-link {
    min-width: unset;
    width: 100%;
  }

  /* Ensure footer has padding above bottom nav */
  .footer {
    padding-bottom: calc(var(--space-8) + var(--bottom-nav-height));
  }
}

@media (max-width: 480px) {
  .hero-heading {
    font-size: var(--text-2xl);
  }

  .stats-row {
    grid-template-columns: 1fr;
  }
}