/* ===========================
   BASECAMP — Landing Page Styles
   Mobile-first responsive design
   =========================== */

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

:root {
  --charcoal: #1a1a1a;
  --charcoal-light: #2b2b2b;
  --forest: #2d4a3e;
  --forest-light: #3a6354;
  --burnt-orange: #c4652a;
  --burnt-orange-hover: #d97a3e;
  --sand: #d4c5a9;
  --off-white: #f5f2ec;
  --white: #ffffff;
  --text-primary: #f5f2ec;
  --text-secondary: #a8a8a0;
  --text-dark: #1a1a1a;
  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Inter', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--charcoal);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(26, 26, 26, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--off-white);
}

.main-nav ul {
  display: flex;
  gap: 1.5rem;
}

.main-nav a {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: var(--burnt-orange);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.9rem 2.25rem;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.25s ease, transform 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background-color: var(--burnt-orange);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--burnt-orange-hover);
}

.btn-cart {
  background-color: var(--burnt-orange);
  color: var(--white);
  font-size: 1.05rem;
  padding: 1rem 2.5rem;
  width: 100%;
}

.btn-cart:hover {
  background-color: var(--burnt-orange-hover);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url('https://placehold.co/1920x1080/1a1a1a/2b2b2b?text=') center/cover no-repeat;
  background-color: var(--charcoal);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(26, 26, 26, 0.95) 0%,
    rgba(45, 74, 62, 0.7) 50%,
    rgba(26, 26, 26, 0.9) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 7rem 0 4rem;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--burnt-orange);
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.75rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--off-white);
  margin-bottom: 1.25rem;
}

.hero-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 2rem;
}

/* --- Product Section --- */
.product {
  padding: 5rem 0;
  background-color: var(--charcoal-light);
}

.product-grid {
  display: grid;
  gap: 2.5rem;
}

.product-image {
  overflow: hidden;
  border-radius: 3px;
  background-color: var(--charcoal);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-image:hover img {
  transform: scale(1.03);
}

.product-details {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.product-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--burnt-orange);
  margin-bottom: 0.75rem;
}

.product-name {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1.15;
  color: var(--off-white);
  margin-bottom: 0.75rem;
}

.product-price {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--sand);
  margin-bottom: 1.25rem;
}

.product-desc {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.product-specs li {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--off-white);
  padding-left: 1rem;
  position: relative;
}

.product-specs li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  background-color: var(--burnt-orange);
  border-radius: 1px;
}

/* --- Why Us --- */
.why-us {
  padding: 5rem 0;
  background-color: var(--charcoal);
}

.why-us-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--burnt-orange);
  margin-bottom: 0.75rem;
}

.why-us-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1.1;
  color: var(--off-white);
  margin-bottom: 1rem;
}

.why-us-intro {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

.values-grid {
  display: grid;
  gap: 1.5rem;
}

.value-card {
  background-color: var(--charcoal-light);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  padding: 2rem 1.75rem;
  transition: border-color 0.3s ease;
}

.value-card:hover {
  border-color: var(--forest-light);
}

.value-icon {
  color: var(--burnt-orange);
  margin-bottom: 1.25rem;
}

.value-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--off-white);
  margin-bottom: 0.75rem;
}

.value-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* --- Banner --- */
.banner {
  position: relative;
  padding: 5rem 0;
  text-align: center;
  background: url('https://placehold.co/1920x600/2d4a3e/2d4a3e?text=') center/cover no-repeat;
  background-color: var(--forest);
}

.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(26, 26, 26, 0.6) 0%,
    rgba(45, 74, 62, 0.85) 100%
  );
}

.banner-content {
  position: relative;
  z-index: 1;
}

.banner h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 1.1;
  color: var(--off-white);
  margin-bottom: 1.5rem;
}

/* --- Footer --- */
.site-footer {
  padding: 4rem 0 0;
  background-color: var(--charcoal);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer-brand .logo {
  display: inline-block;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 280px;
}

.footer-links h4 {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--off-white);
  margin-bottom: 1rem;
}

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

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--burnt-orange);
}

.footer-bottom {
  padding: 1.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* =========================
   Responsive — Tablet (640px+)
   ========================= */
@media (min-width: 640px) {
  .container {
    padding: 0 2rem;
  }

  .hero-content {
    padding: 8rem 0 5rem;
  }

  .product {
    padding: 6rem 0;
  }

  .product-specs {
    gap: 0.75rem;
  }

  .btn-cart {
    width: auto;
  }

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

  .why-us {
    padding: 6rem 0;
  }

  .banner {
    padding: 6rem 0;
  }

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

/* =========================
   Responsive — Desktop (960px+)
   ========================= */
@media (min-width: 960px) {
  .container {
    padding: 0 2.5rem;
  }

  .site-header .container {
    height: 72px;
  }

  .main-nav ul {
    gap: 2.25rem;
  }

  .hero-content {
    padding: 10rem 0 6rem;
    max-width: 680px;
  }

  .product {
    padding: 7rem 0;
  }

  .product-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }

  .product-image {
    min-height: 560px;
  }

  .values-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }

  .why-us {
    padding: 7rem 0;
  }

  .banner {
    padding: 7rem 0;
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

/* =========================
   Responsive — Large (1200px+)
   ========================= */
@media (min-width: 1200px) {
  .hero-content {
    max-width: 750px;
  }

  .product-grid {
    gap: 5rem;
  }
}