:root {
  --color-bg: #ffffff;
  --color-surface: #f6f7f9;
  --color-border: #e3e6ea;
  --color-text: #1d2330;
  --color-muted: #5b6370;
  --color-primary: #c8102e;
  --color-primary-dark: #9c0c24;
  --color-accent: #1f3a5f;
  --max-width: 1100px;
  --radius: 6px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.06);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

h1, h2, h3 {
  color: var(--color-accent);
  line-height: 1.25;
  margin-top: 0;
}

h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin-top: 2.5rem; }
h3 { font-size: 1.15rem; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  background: var(--color-accent);
  color: #fff;
  border-bottom: 4px solid var(--color-primary);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.brand {
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand small {
  display: block;
  font-weight: 400;
  font-size: 0.75rem;
  color: #c2cad6;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.brand:hover {
  text-decoration: none;
}

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

.nav a {
  color: #fff;
  font-size: 0.95rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a.active {
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #1f3a5f 0%, #2c4f7c 100%);
  color: #fff;
  padding: 3.5rem 0 3rem;
}

.hero h1 {
  color: #fff;
  margin-bottom: 0.25rem;
}

@media (min-width: 768px) {
  .hero h1 { font-size: 4.8rem; }
}

.hero-sub {
  font-size: 1.4rem;
  font-weight: 500;
  color: #f0c6cb;
  margin: 0 0 1.25rem;
  letter-spacing: 0.01em;
}

.hero p {
  font-size: 1.1rem;
  color: #d6dde6;
  max-width: 640px;
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.15s ease;
}

.btn:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn-outline {
  background: transparent;
  border: 2px solid #fff;
  color: #fff;
}

.btn-outline:hover {
  background: #fff;
  color: var(--color-accent);
}

/* Sections */
section {
  padding: 2.5rem 0;
}

.section-intro {
  max-width: 720px;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

/* Product grid */
.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.product {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #fff;
}

.product-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.product h3 {
  margin: 0;
}

.product .price {
  font-size: 1.05rem;
  color: var(--color-text);
}

.product .price strong {
  color: var(--color-primary);
}

.specs {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin-top: 0.5rem;
}

.specs td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--color-border);
}

.specs td:first-child {
  color: var(--color-muted);
  width: 55%;
}

.specs tr:last-child td {
  border-bottom: none;
}

/* Accessories */
.accessories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.25rem;
  justify-items: center;
}

@media (max-width: 800px) {
  .accessories { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .accessories { grid-template-columns: 1fr; }
}

.accessory {
  margin: 0;
  width: 80%;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.accessory img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: contain;
  background: #fff;
  padding: 0.75rem;
}

.accessory figcaption {
  padding: 0.75rem 1rem 1rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.accessory figcaption strong {
  color: var(--color-accent);
  font-size: 0.98rem;
}

.accessory figcaption span {
  color: var(--color-muted);
  font-size: 0.82rem;
}

/* Door types */
.door-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.door {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
}

.door img {
  margin: 0 auto 0.75rem;
  height: 90px;
  width: auto;
}

.door h3 {
  margin: 0 0 0.5rem;
}

.door p {
  font-size: 0.92rem;
  color: var(--color-muted);
  margin: 0;
  text-align: left;
}

/* Form */
.form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 600px) {
  .form .row { grid-template-columns: 1fr; }
}

.form label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.form input[type="text"],
.form input[type="email"],
.form input[type="tel"],
.form input[type="number"],
.form select,
.form textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  background: #fff;
}

.form textarea {
  min-height: 100px;
  resize: vertical;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
  border-color: var(--color-accent);
}

.form fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  background: #fff;
}

.form legend {
  font-weight: 600;
  padding: 0 0.5rem;
}

.form .check-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 0.25rem;
}

.form .check-row label {
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.line-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

@media (max-width: 480px) {
  .line-item { grid-template-columns: 70px 1fr; }
}

.form-help {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: -0.25rem;
}

.form-status {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-left-width: 4px;
  border-radius: var(--radius);
  background: var(--color-surface);
  outline: none;
}

.form-status[hidden] {
  display: none;
}

.form-status h3 {
  margin: 0 0 0.25rem 0;
  color: var(--color-text);
}

.form-status p {
  margin: 0;
  color: var(--color-muted);
}

.form-status--loading {
  border-left-color: var(--color-muted);
  color: var(--color-muted);
  font-size: 0.95rem;
}

.form-status--success {
  border-left-color: #2f7a3a;
}

.form-status--error {
  border-left-color: var(--color-primary);
  color: var(--color-text);
}

.form-status--error a {
  color: var(--color-primary);
  text-decoration: underline;
}

button[aria-busy="true"] {
  opacity: 0.7;
  cursor: progress;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.contact-card h3 {
  margin-top: 0;
}

.contact-card dl {
  margin: 0;
}

.contact-card dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  margin-top: 0.75rem;
}

.contact-card dd {
  margin: 0.15rem 0 0;
  font-size: 1.02rem;
}

/* Footer */
.site-footer {
  background: var(--color-accent);
  color: #c2cad6;
  padding: 2rem 0;
  margin-top: 3rem;
  font-size: 0.9rem;
}

.site-footer a {
  color: #fff;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}