/* ============================================================
   VERTIC7 — sistema visual
   Concepto: señalética urbana + etiqueta de ropa.
   La "7" de la marca se convierte en sello; los CTA llevan
   la esquina cortada de una etiqueta de prenda; una franja
   de cinta de peligro (naranja/negro) marca las transiciones.
   ============================================================ */

:root {
  color-scheme: light;

  --ink: #e2e6e2;
  --ink-soft: #ffffff;
  --panel: #ffffff;
  --panel-soft: #eef1ef;
  --line: rgba(35, 40, 38, 0.12);
  --line-strong: rgba(35, 40, 38, 0.24);

  --text: #090909;
  --muted: #080808;

  --accent: #478DA9;
  --accent-soft: rgba(71, 141, 169, 0.16);
  --accent-ink: #081419;
  --tape: #68747A;

  --white: #202523;

  --radius-s: 6px;
  --radius-m: 14px;
  --radius-l: 22px;

  --font-display: "Arial Narrow", "Helvetica Neue Condensed", Helvetica, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
}

body {
  overflow-x: hidden;
}

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

button {
  font: inherit;
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

/* ---------- utilidades tipográficas ---------- */

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 14px;
  font-family: var(--font-mono);
}

.eyebrow::before {
  content: "// ";
  color: var(--muted);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin: 0;
}

/* ---------- cinta de peligro (elemento firma) ---------- */

.hazard-strip,
.hero::after,
.promo-banner::before {
  content: "";
  display: block;
  height: 6px;
  background: repeating-linear-gradient(
    -45deg,
    var(--accent) 0 18px,
    var(--ink) 18px 22px,
    var(--tape) 22px 40px,
    var(--ink) 40px 44px
  );
}

.hero {
  padding: 0 0 40px;
  position: relative;
}

.hero::after {
  margin-top: 28px;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--white);
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}

.brand::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--accent);
  margin-left: 8px;
  transform: rotate(45deg);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--white);
  padding: 10px 14px;
  border-radius: var(--radius-s);
  cursor: pointer;
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -4px;
  height: 2px;
  background: var(--accent);
  transition: right 0.2s ease;
}

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

.nav-links a:hover::after {
  right: 0;
}

.nav-buttons {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.btn-auth,
.cart-pill {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  background: transparent;
  color: var(--white);
  padding: 10px 16px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.btn-auth:hover,
.cart-pill:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.cart-pill span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  margin-left: 6px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.hero-content {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 32px;
  align-items: center;
  padding: 56px 24px 0;
}

.hero-copy {
  max-width: 580px;
}

h1 {
  font-size: clamp(2.6rem, 4.6vw, 4.6rem);
  line-height: 0.96;
  transform: scaleX(0.96);
  transform-origin: left center;
}

.hero-text {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
  margin: 26px 0 0;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 24px;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-s);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 100%, 0% 100%);
  padding-right: 30px;
  box-shadow: 0 12px 28px rgba(71, 141, 169, 0.25);
}

.btn-primary:hover {
  background: #478DA9;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--white);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.hero-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 34px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

.hero-card::before {
  content: "Vertic7";
  position: absolute;
  top: -16px;
  right: 26px;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 7px 12px;
  border-radius: 4px;
  transform: rotate(-6deg);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35);
}

.hero-card h3 {
  font-size: 1.3rem;
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--font-body);
  font-weight: 800;
}

.hero-card p,
.hero-card ul {
  color: var(--muted);
  line-height: 1.8;
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  border-top: 1px dashed var(--line-strong);
}

.hero-card li {
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-strong);
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--text);
}

.hero-card li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  flex-shrink: 0;
}

main {
  padding: 0 24px 64px;
}

.products-section,
.contact-section,
.promo-banner {
  max-width: 1200px;
  margin: 0 auto 40px;
  padding: 0 24px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  margin-bottom: 28px;
  padding-top: 56px;
  border-top: 1px solid var(--line);
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.section-header p:last-child {
  color: var(--muted);
  max-width: 320px;
  text-align: right;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-category-group {
  grid-column: 1 / -1;
}

.product-category-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin: 8px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.product-category-heading .eyebrow {
  margin: 0 0 6px;
}

.product-category-heading h3 {
  font-size: 1.35rem;
}

.product-preview-grid {
  margin-bottom: 34px;
}

.similar-products-btn {
  flex-shrink: 0;
  padding: 10px 16px;
}

.category-filters,
.subcategory-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
  align-items: center;
}

.subcategory-filters:not(:empty) {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.add-product-section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 24px;
  margin-bottom: 32px;
}

.add-product-section h3 {
  margin-bottom: 18px;
  text-transform: none;
  font-family: var(--font-body);
}

.add-product-form {
  display: grid;
  gap: 16px;
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row label {
  color: var(--muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-row input,
.form-row select {
  background: var(--ink-soft);
  border: 1px solid var(--line-strong);
  color: var(--white);
  padding: 12px 14px;
  border-radius: var(--radius-s);
}

.form-row input::placeholder {
  color: rgba(36, 41, 39, 0.48);
}

.filter-btn {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--muted);
  padding: 9px 16px;
  border-radius: var(--radius-s);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  border-color: var(--line-strong);
  color: var(--white);
}

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.product-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.product-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.product-card-empty {
  grid-column: 1 / -1;
  max-width: 440px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px dashed var(--line-strong);
}

.product-empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  text-align: center;
  padding: 2rem;
}

.product-empty-state h3 {
  font-size: 2rem;
  margin: 0 0 0.75rem;
  color: var(--accent);
}

.product-empty-state p {
  margin: 0;
  font-size: 1.05rem;
  color: var(--muted);
  font-family: var(--font-body);
}

.product-gallery {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
}

.product-main-image,
.product-thumbnail {
  display: block;
  padding: 0;
  overflow: hidden;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.product-main-image {
  width: 100%;
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-s);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.product-thumbnails {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 64px;
  max-height: 100%;
  overflow-y: auto;
}

.product-thumbnail img {
  aspect-ratio: 1;
  object-fit: cover;
}

.product-main-image:hover img,
.product-thumbnail:hover img {
  transform: scale(1.015);
  border-color: var(--accent);
}

.product-card h3 {
  font-size: 1.05rem;
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--font-body);
  font-weight: 800;
}

.product-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 5px 10px 5px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--muted);
}

.product-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.product-reference {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.product-tag::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.product-card p {
  color: var(--muted);
  margin: 0;
  line-height: 1.65;
  font-size: 0.92rem;
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
}

.price-group {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
}

.product-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.price {
  font-weight: 700;
}

.price-old {
  color: var(--muted);
  text-decoration: line-through;
  font-size: 0.85rem;
}

.price-current {
  color: var(--accent);
  font-size: 1.05rem;
}

.whatsapp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: var(--radius-s);
  background: transparent;
  border: 1px solid #717b75;
  color: #478DA9;
  font-weight: 700;
  font-size: 0.82rem;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.whatsapp-btn:hover {
  background: #626d66;
  color: #0b1a12;
}

.add-to-cart,
.info-btn {
  border: none;
  border-radius: var(--radius-s);
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.add-to-cart {
  background: var(--accent);
  color: var(--accent-ink);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 100%, 0% 100%);
  padding-right: 20px;
}

.add-to-cart:hover {
  background: #478DA9;
}

.info-btn {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--white);
}

.promo-banner {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 36px;
  overflow: hidden;
}

.promo-banner::before {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  margin-top: 0;
}

.promo-banner > div {
  padding-top: 10px;
}

.promo-banner h3 {
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  text-transform: none;
  font-family: var(--font-body);
  font-weight: 800;
  max-width: 560px;
}

.contact-section {
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 44px 32px;
}

.contact-section h3 {
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  text-transform: none;
  font-family: var(--font-body);
}

.contact-section p {
  color: var(--muted);
  margin: 16px 0 26px;
}

footer {
  text-align: center;
  color: var(--muted);
  padding: 24px 24px 40px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
}

/* ---------- modal de imagen ---------- */

.image-modal {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 1200;
}

.image-modal.active {
  display: block;
}

.image-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 8, 7, 0.9);
}

.image-modal-content {
  position: relative;
  width: min(82vw, 900px);
  margin: 50px auto;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  padding: 24px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

.image-modal-content img {
  display: block;
  width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-s);
  background: var(--ink);
}

.image-main-link {
  width: 100%;
  margin-top: 14px;
}

.image-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--panel);
  color: var(--white);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  z-index: 1;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  transition: border-color 0.2s ease;
}

.image-nav:hover {
  border-color: var(--accent);
}

.image-nav-left {
  left: -20px;
}

.image-nav-right {
  right: -20px;
}

.image-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 1;
  font-size: 1.3rem;
}

/* ---------- overlays / carrito / auth ---------- */

.cart-overlay,
.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(9, 8, 7, 0.8);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 900;
}

.cart-overlay.active,
.auth-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.cart-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(420px, 100%);
  height: 100vh;
  background: var(--ink-soft);
  border-left: 1px solid var(--line);
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.cart-panel.open {
  transform: translateX(0);
}

.cart-header,
.cart-summary {
  padding: 24px;
  border-bottom: 1px solid var(--line);
}

.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cart-header h3 {
  text-transform: none;
  font-family: var(--font-body);
}

.icon-button {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--white);
  font-size: 1rem;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-s);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s ease;
}

.icon-button:hover {
  border-color: var(--accent);
}

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 18px 24px;
}

.cart-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}

.cart-item img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-s);
  border: 1px solid var(--line);
}

.cart-item-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cart-item-title {
  font-weight: 700;
}

.cart-item-price {
  color: var(--accent);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.quantity-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
}

.quantity-controls button {
  border: 1px solid var(--line-strong);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-s);
  background: transparent;
  color: var(--white);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.quantity-controls button:hover {
  border-color: var(--accent);
}

.remove-item {
  align-self: flex-start;
  border: none;
  background: transparent;
  color: #478DA9;
  cursor: pointer;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
  padding: 0;
}

.empty-cart {
  color: var(--muted);
  padding: 36px 0;
  text-align: center;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.92rem;
}

.summary-row strong {
  color: var(--text);
}

.full-width {
  width: 100%;
  border: none;
  padding: 14px 18px;
  margin-top: 12px;
  clip-path: none;
}

.cart-summary .btn-primary.full-width,
#checkout-btn.full-width {
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 100%, 0% 100%);
}

.whatsapp-cart-btn {
  background: transparent;
  border: 1px solid #25d366;
  color: #25d366;
  display: block;
  text-align: center;
}

.whatsapp-cart-btn:hover {
  background: #25d366;
  color: #0b1a12;
}

.cart-save-message {
  min-height: 1.2em;
  font-size: 0.82rem;
  text-align: center;
  margin: 8px 0 0;
  font-family: var(--font-mono);
}

.cart-save-message.success {
  color: #7fe0a3;
}

.cart-save-message.error {
  color: #ff8f7a;
}

/* ---------- modal de cuenta ---------- */

.auth-modal {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  padding: 32px;
  width: min(420px, 92%);
  max-height: 90vh;
  overflow-y: auto;
  z-index: 1000;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

.auth-modal.open {
  display: block;
}

.auth-modal h2 {
  margin-bottom: 24px;
  text-align: center;
  font-size: 1.3rem;
  text-transform: none;
  font-family: var(--font-body);
}

.auth-close {
  position: absolute;
  top: 18px;
  right: 18px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--white);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-s);
  cursor: pointer;
}

.auth-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 4px;
}

.auth-tab {
  flex: 1;
  padding: 10px 0;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: background 0.2s ease, color 0.2s ease;
}

.auth-tab.active {
  color: var(--accent-ink);
  background: var(--accent);
}

.auth-form {
  display: none;
  flex-direction: column;
  gap: 14px;
}

.auth-form.active {
  display: flex;
}

.auth-form input {
  padding: 14px 16px;
  border-radius: var(--radius-s);
  border: 1px solid var(--line-strong);
  background: var(--ink-soft);
  color: var(--white);
}

.auth-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.auth-message {
  padding: 12px 14px;
  border-radius: var(--radius-s);
  text-align: center;
  font-weight: 600;
  font-size: 0.88rem;
  margin-top: 8px;
  display: none;
}

.auth-message.show {
  display: block;
}

.auth-message.success {
  background: rgba(127, 224, 163, 0.12);
  color: #7fe0a3;
}

.auth-message.error {
  background: rgba(255, 143, 122, 0.12);
  color: #4e4c4b;
}

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-card::before {
    top: -14px;
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .navbar {
    padding: 18px 16px;
  }

  .hero-content {
    padding: 40px 16px 0;
  }

  .products-section,
  .promo-banner,
  .contact-section {
    padding: 0 16px;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .section-header p:last-child {
    text-align: left;
  }

  .promo-banner {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 16px;
    right: 16px;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
    background: var(--panel);
    border-radius: var(--radius-m);
    border: 1px solid var(--line-strong);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 8px;
    border-bottom: 1px solid var(--line);
  }

  .nav-links a::after {
    display: none;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .image-nav-left {
    left: 4px;
  }

  .image-nav-right {
    right: 4px;
  }
}