:root {
  --primary: #00897B;
  --primary-light: #4db6ac;
  --primary-dark: #00695c;
  --accent: #ffb74d;
  --bg: #f8fafc;
  --text: #334155;
  --text-light: #64748b;
  --white: #ffffff;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --glass: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Outfit', 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Navigation ────────────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-dark);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--primary);
}

/* ── Hero ────────────────────────────────────────────────────────────── */
.hero {
  padding: 6rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, #e0f2f1 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--primary-dark);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* ── Views ────────────────────────────────────────────────────────────── */
.view {
  display: none;
  animation: fadeIn 0.5s ease;
  min-height: 80vh;
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Product Gallery ─────────────────────────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2.5rem;
}

.product-card {
  background: var(--white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid rgba(0,0,0,0.05);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.product-img {
  height: 250px;
  background: #f1f5f9;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.product-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--accent);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
}

.product-info {
  padding: 1.5rem;
}

.product-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.product-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 1rem;
}

.product-price span {
  font-size: 0.875rem;
  color: var(--text-light);
  font-weight: 400;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-block {
  width: 100%;
}

/* ── Checkout ────────────────────────────────────────────────────────── */
.checkout-container {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 3rem;
}

.card {
  background: var(--white);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
}

.order-summary {
  position: sticky;
  top: 6rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.summary-total {
  border-top: 2px dashed #e2e8f0;
  padding-top: 1rem;
  margin-top: 1rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--primary-dark);
}

/* ── Success ────────────────────────────────────────────────────────── */
.success-card {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.success-icon {
  width: 80px;
  height: 80px;
  background: #e0f2f1;
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2.5rem;
  margin: 0 auto 2rem;
}

.tracking-info {
  background: #f1f5f9;
  padding: 1.5rem;
  border-radius: 12px;
  margin: 2rem 0;
  text-align: left;
}

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .checkout-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .hero h1 { font-size: 2.5rem; }
}