/* ========================================
   1. CSS CUSTOM PROPERTIES
   ======================================== */

:root {
  /* Colors */
  --color-primary: #ff4f00;
  --color-on-primary: #fffefb;
  --color-ink: #201515;
  --color-ink-soft: #2f2a26;
  --color-ink-mid: #36342e;
  --color-body: #605d52;
  --color-body-mid: #939084;
  --color-mute: #c5c0b1;
  --color-canvas: #fffefb;
  --color-canvas-soft: #f8f4f0;

  /* Spacing */
  --space-xxs: 2px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --space-3xl: 48px;
  --space-4xl: 64px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-pill: 9999px;

  /* Typography */
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

/* ========================================
   2. RESET
   ======================================== */

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

html {
  scroll-behavior: smooth;
}

body,
h1, h2, h3, p,
ul, ol,
figure,
blockquote {
  margin: 0;
}

ul, ol {
  padding: 0;
  list-style: none;
}

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

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

/* ========================================
   3. BASE
   ======================================== */

body {
  font-family: var(--font);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-ink);
  background-color: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
}

/* ========================================
   4. UTILITIES
   ======================================== */

.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-xl);
  padding-right: var(--space-xl);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Eyebrow */
.eyebrow {
  font-size: 14px;
  font-weight: 500;
  line-height: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-ink);
  margin-bottom: var(--space-md);
}

/* Display sizes */
.display-xl {
  font-size: 40px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.5px;
}

.display-lg {
  font-size: 32px;
  font-weight: 500;
  line-height: 1.2;
}

.display-md {
  font-size: 28px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 1px;
}

.display-sub-sm {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.3px;
}

/* Body sizes */
.body-lg {
  font-size: 20px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.2px;
}

.body-md {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
}

.body-sm {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}

.body-sm-strong {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.caption {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
}

/* ========================================
   5. COMPONENTS
   ======================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}

.btn:hover {
  opacity: 0.85;
}

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

.btn--secondary {
  background-color: var(--color-ink);
  color: var(--color-on-primary);
}

.btn--tertiary {
  background-color: var(--color-canvas);
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
}

/* Cards */
.card {
  background-color: var(--color-canvas-soft);
  color: var(--color-ink);
  padding: var(--space-xl);
  border-radius: var(--radius-md);
}

.card .display-sub-sm {
  margin-bottom: var(--space-sm);
}

.card .body-sm {
  color: var(--color-body);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-canvas-soft);
  color: var(--color-ink);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

/* ========================================
   6. NAV
   ======================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-canvas);
  border-bottom: 1px solid var(--color-mute);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}

.nav__brand {
  display: flex;
  align-items: center;
}

.nav__logo {
  height: 56px;
  width: auto;
}

.nav__toggle {
  display: none;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

.nav__link {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-ink);
  transition: color 0.2s ease;
}

.nav__link:hover {
  color: var(--color-primary);
}

/* ========================================
   7. SECTIONS
   ======================================== */

/* Band (generic section) */
.band {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

.band--light {
  background-color: var(--color-canvas);
}

.band--soft {
  background-color: var(--color-canvas-soft);
}

.band--dark {
  background-color: var(--color-ink);
  color: var(--color-on-primary);
}

.band--dark .display-lg,
.band--dark .body-lg {
  color: var(--color-on-primary);
}

.band--dark .eyebrow {
  color: var(--color-canvas-soft);
}

/* Hero */
.hero {
  position: relative;
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('hero-bg.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.2;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__text {
  color: var(--color-body);
  max-width: 560px;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

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

/* About */
.about__text {
  color: var(--color-body);
  max-width: 720px;
  margin-top: var(--space-xl);
}

/* Services Grid */
.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

/* Why Choose Us */
.why__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

/* CTA Band */
#cta .container {
  text-align: center;
}

.cta__text {
  max-width: 560px;
  margin: var(--space-xl) auto var(--space-2xl);
  color: var(--color-canvas-soft);
}

/* ========================================
   8. FOOTER
   ======================================== */

.footer {
  background-color: var(--color-ink);
  color: var(--color-canvas-soft);
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

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

.footer__logo {
  height: 56px;
  width: auto;
  margin-bottom: var(--space-md);
}

.footer__copy {
  color: var(--color-body-mid);
}

.footer__link {
  color: var(--color-canvas-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer__link:hover {
  color: var(--color-primary);
}

/* ========================================
   9. MEDIA QUERIES
   ======================================== */

/* Tablet: 768px+ */
@media (min-width: 768px) {
  .display-xl {
    font-size: 48px;
  }

  .display-lg {
    font-size: 40px;
  }

  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__inner {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop: 1024px+ */
@media (min-width: 1024px) {
  .display-xl {
    font-size: 56px;
  }

  .display-lg {
    font-size: 48px;
  }

  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__inner {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile: < 768px */
@media (max-width: 767px) {
  .nav__hamburger {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4xl) var(--space-xl) var(--space-xl);
    gap: var(--space-lg);
    background-color: var(--color-canvas);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 99;
  }

  .nav__toggle:checked ~ .nav__links {
    transform: translateX(0);
  }

  .nav__toggle:checked ~ .nav__hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav__toggle:checked ~ .nav__hamburger span:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle:checked ~ .nav__hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav__links .btn {
    width: 100%;
    text-align: center;
  }
}