/* KubikSpintere — budget gaming & desk electronics */

:root {
  --bg: #f3f6f8;
  --bg-elevated: #ffffff;
  --ink: #0f1b24;
  --ink-muted: #4a5c6a;
  --line: #d4dde4;
  --accent: #0d8f7a;
  --accent-deep: #066657;
  --accent-soft: #d8f3ee;
  --warm: #e8a317;
  --hero-glow: #7ec8c0;
  --hero-deep: #1a3a48;
  --radius: 4px;
  --font-display: "Syne", sans-serif;
  --font-body: "DM Sans", sans-serif;
  --space: clamp(1rem, 3vw, 2rem);
  --max: 68rem;
  --nav-h: 4rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 100% 0%, rgba(126, 200, 192, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(232, 163, 23, 0.08), transparent 50%);
  min-height: 100vh;
}

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

a {
  color: var(--accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--accent);
}

/* —— Nav —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(243, 246, 248, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}

.logo span {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--ink);
}

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

.site-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 0;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.75rem var(--space);
  }
}

/* —— Layout —— */
.wrap {
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
}

.section {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.section--tight {
  padding-top: 2rem;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 0.5rem;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 700;
}

h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.lead {
  font-size: 1.15rem;
  color: var(--ink-muted);
  max-width: 36rem;
  margin: 0 0 1.5rem;
}

.muted {
  color: var(--ink-muted);
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(160deg, transparent 40%, var(--bg) 92%),
    linear-gradient(105deg, #e8f4f2 0%, #c5e4df 35%, #1a3a48 100%);
}

.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(15, 27, 36, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 27, 36, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 30%, transparent 85%);
}

.hero__bg::after {
  content: "";
  position: absolute;
  width: 55%;
  height: 70%;
  right: -5%;
  top: 10%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--hero-glow) 0%, transparent 70%);
  filter: blur(40px);
  opacity: 0.55;
  animation: drift 12s ease-in-out infinite alternate;
}

@keyframes drift {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(-4%, 6%) scale(1.08);
  }
}

.hero__content {
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
  padding: clamp(3rem, 10vh, 6rem) 0 clamp(3rem, 8vh, 5rem);
}

.hero__brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  letter-spacing: -0.045em;
  line-height: 0.95;
  margin: 0 0 1rem;
  color: var(--ink);
}

.hero__brand span {
  color: var(--accent-deep);
}

.hero h1 {
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  font-weight: 600;
  max-width: 22ch;
  margin-bottom: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.35rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease;
}

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

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

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

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn--ghost:hover {
  border-color: var(--ink-muted);
  color: var(--ink);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* —— Guide list (home) —— */
.guide-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.guide-list li {
  border-bottom: 1px solid var(--line);
}

.guide-list a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 1.25rem 0;
  text-decoration: none;
  color: inherit;
  transition: padding-left 0.25s ease;
}

.guide-list a:hover {
  padding-left: 0.35rem;
}

.guide-list__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.guide-list__meta {
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.guide-list__arrow {
  color: var(--accent);
  font-weight: 600;
}

/* —— Product rows —— */
.product-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 2rem 0;
  border-top: 1px solid var(--line);
}

.product {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  gap: 1.25rem;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}

.product__thumb {
  width: 5.5rem;
  height: 5.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--ink-muted);
  text-align: center;
  padding: 0.35rem;
  line-height: 1.2;
}

.product__body h3 {
  margin-bottom: 0.35rem;
}

.product__body p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.product__asin {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.75rem;
  font-family: ui-monospace, monospace;
  color: var(--ink-muted);
  background: var(--accent-soft);
  padding: 0.15rem 0.4rem;
  border-radius: 2px;
}

.product__cta {
  white-space: nowrap;
}

@media (max-width: 640px) {
  .product {
    grid-template-columns: 4.5rem 1fr;
    grid-template-rows: auto auto;
  }

  .product__cta {
    grid-column: 2;
    justify-self: start;
  }

  .product__thumb {
    width: 4.5rem;
    height: 4.5rem;
  }
}

/* —— Page intro —— */
.page-intro {
  padding: clamp(2rem, 5vw, 3.5rem) 0 0;
}

.page-intro .lead {
  margin-bottom: 0.75rem;
}

.disclaimer-strip {
  font-size: 0.85rem;
  color: var(--ink-muted);
  padding: 0.75rem 0 0;
  border-top: 1px solid var(--line);
  margin-top: 1.5rem;
}

/* —— Prose —— */
.prose {
  max-width: 40rem;
}

.prose p {
  margin: 0 0 1rem;
}

.prose ul {
  padding-left: 1.25rem;
  margin: 0 0 1rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

/* —— Footer —— */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.site-footer__inner {
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer a {
  color: var(--ink-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink);
}

/* —— PC Builder —— */
.builder {
  display: grid;
  grid-template-columns: minmax(11rem, 14rem) minmax(0, 1fr) minmax(14rem, 18rem);
  gap: 1.25rem;
  align-items: start;
  margin: 1.5rem 0 2rem;
}

.builder-panel {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  min-height: 12rem;
}

.builder-panel h2 {
  font-size: 1rem;
  margin: 0 0 0.75rem;
}

.slot-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.slot-btn {
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: var(--radius);
  padding: 0.65rem 0.75rem;
  cursor: pointer;
  font-family: var(--font-body);
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.slot-btn:hover {
  border-color: var(--accent);
}

.slot-btn.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.slot-btn__cat {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.slot-btn__name {
  display: block;
  font-size: 0.88rem;
  margin-top: 0.15rem;
  color: var(--ink-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.slot-btn.has-part .slot-btn__name {
  color: var(--ink);
  font-weight: 500;
}

.builder-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  align-items: center;
}

.builder-search {
  flex: 1 1 12rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--ink);
}

.builder-check {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--ink-muted);
  cursor: pointer;
  user-select: none;
}

.custom-amazon {
  margin-bottom: 0.75rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elevated, var(--bg));
}

.custom-amazon__hint {
  margin: 0 0 0.6rem;
  font-size: 0.85rem;
}

.custom-amazon__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.custom-amazon__row .builder-search {
  flex: 1 1 14rem;
  min-width: 0;
}

.custom-amazon__name {
  flex: 1 1 10rem;
}

.custom-amazon__error {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  color: var(--danger, #b42318);
}

.part-catalog {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: min(60vh, 32rem);
  overflow: auto;
  border-top: 1px solid var(--line);
}

.part-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}

.part-row__meta {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin: 0.2rem 0 0;
}

.part-row__actions {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  align-items: stretch;
  min-width: 8.5rem;
}

.catalog-meta {
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin: 0 0 0.5rem;
}

.catalog-more {
  width: 100%;
  margin-top: 0.75rem;
}

.build-summary__row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.build-price-note {
  font-size: 0.8rem;
  margin: 0.75rem 0;
}

.icecat-credit {
  margin: 1.5rem 0 2rem;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.icecat-credit p {
  margin: 0 0 0.5rem;
}

.icecat-credit a {
  color: var(--accent-deep);
}

.part-row.is-selected {
  background: var(--accent-soft);
  margin: 0 -0.5rem;
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

.builder-warn {
  font-size: 0.85rem;
  color: #8a5a00;
  background: #fff6e0;
  border: 1px solid #ecd9a8;
  border-radius: var(--radius);
  padding: 0.65rem 0.75rem;
  margin: 0 0 0.75rem;
}

.builder-warn[hidden] {
  display: none;
}

.build-summary {
  list-style: none;
  margin: 0;
  padding: 0;
}

.build-summary li {
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}

.build-summary__cat {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.build-summary__name {
  display: block;
  margin: 0.15rem 0 0.35rem;
}

.build-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.builder-empty {
  color: var(--ink-muted);
  font-size: 0.9rem;
  padding: 1rem 0;
}

.builder-status {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin: 0 0 0.5rem;
}

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

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

  .part-catalog {
    max-height: 22rem;
  }
}

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

/* —— Motion —— */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero__bg::after {
    animation: none;
  }

  .btn:hover,
  .guide-list a:hover {
    transform: none;
    padding-left: 0;
  }
}