:root {
  --font-heading: 'Archivo', sans-serif;
  --font-body: 'Inter', sans-serif;

  --color-bg: #ffffff;
  --color-panel: #f4f4f4;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-border: #e2e2e2;
  --color-nav-bg: #1a1a1a;
  --color-nav-text: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  margin: 0;
  padding: 0;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  margin: 0 0 0.5rem;
}

/* Nav */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--color-nav-bg);
  color: var(--color-nav-text);
}

.nav-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
}

.nav-brand span {
  font-weight: 600;
  color: #aaa;
  margin-left: 0.35rem;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
}

.nav-links a,
.nav-user-block a {
  color: var(--color-nav-text);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-links a:hover,
.nav-user-block a:hover {
  color: #ccc;
}

.nav-user-block {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-user {
  color: #999;
  font-size: 0.8rem;
  text-transform: none;
  letter-spacing: normal;
}

main {
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
}

.back-link:hover {
  color: var(--color-text);
}

/* Flash messages */
.flashes {
  list-style: none;
  padding: 0;
}

.flash {
  padding: 0.75rem 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.flash-error {
  background: #fdecea;
  color: #611a15;
}

.flash-info {
  background: #e8f0fe;
  color: #1a3e6b;
}

/* Login */
.login-form .field {
  margin-bottom: 1rem;
}

.login-form label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 600;
  font-size: 0.85rem;
}

.login-form input {
  padding: 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-body);
}

.login-form button {
  margin-top: 0.5rem;
  padding: 0.65rem 1.5rem;
  background: var(--color-text);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}

/* Shop grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.product-card {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  background: #fff;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.product-card:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.product-card {
  text-align: center;
}

.product-card img {
  width: 100%;
  height: 170px;
  object-fit: contain;
  margin-bottom: 1.25rem;
}

.product-card-noimg {
  width: 100%;
  height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-panel);
  color: #999;
  margin-bottom: 1.25rem;
}

.product-card-group {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 0.35rem;
}

.product-card-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.9rem;
}

.swatch-row {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
}

.swatch-dot-mini {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  outline: 1px solid var(--color-border);
  outline-offset: 2px;
}

.swatch-silver {
  background: #c8c9cc;
}

.swatch-black {
  background: #1a1a1a;
}

/* Product detail */
.product-detail {
  display: flex;
  gap: 0;
  flex-wrap: wrap;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
}

.product-detail-image {
  flex: 1 1 420px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
}

.product-detail-image img {
  width: 100%;
  max-width: 480px;
  height: auto;
}

.product-detail-panel {
  flex: 1 1 380px;
  background: var(--color-panel);
  padding: 2.5rem;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 0 0.5rem;
}

.product-detail-panel h1 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.model-no {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0;
}

.model-no #model-no {
  color: var(--color-text);
  font-weight: 600;
}

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 1.5rem 0;
}

.spec-block {
  margin-bottom: 1.5rem;
}

.spec-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.spec-label #selected-color-name {
  text-transform: none;
  font-weight: 500;
  letter-spacing: normal;
  color: var(--color-text-muted);
}

.swatches {
  display: flex;
  gap: 0.6rem;
}

.swatch-dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid transparent;
  padding: 2px;
  background-clip: content-box;
  cursor: pointer;
  outline: 1px solid var(--color-border);
  outline-offset: 2px;
}

.swatch-dot.active {
  border-color: var(--color-text);
}

.option-boxes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.option-box {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
}

.option-box.active {
  border-color: var(--color-text);
  background: var(--color-text);
  color: #fff;
}

.option-box.requires-design::after {
  content: " *";
}

.design-note {
  background: #fff4e5;
  color: #7a4a00;
  padding: 0.75rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
}

#quantity {
  padding: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  width: 100px;
  font-family: var(--font-body);
}

.btn-add {
  width: 100%;
  padding: 0.9rem;
  background: transparent;
  border: 1.5px solid var(--color-text);
  border-radius: 4px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn-add:hover {
  background: var(--color-text);
  color: #fff;
}