:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #5b6472;
  --line: #d6dbe3;
  --panel: #ffffff;
  --soft: #f4f6f8;
  --dark: #0d1117;
  --dark-soft: #171d26;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --gold: #b7791f;
  --danger: #b42318;
  --radius: 8px;
  --shadow: 0 18px 45px rgba(16, 24, 40, 0.12);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(3, 7, 18, 0.68), rgba(3, 7, 18, 0.78)),
    url("/assets/cityscape_background.png") center top / cover fixed;
  background-color: #030712;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  color: #f9fafb;
  background: rgba(13, 17, 23, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 124px;
}

.brand-banner {
  display: block;
  width: clamp(150px, 16vw, 220px);
  height: 56px;
  object-fit: contain;
  object-position: left center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  font-size: 0.95rem;
}

.nav-links a {
  color: #d9e1ea;
}

.account-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #d9e1ea;
  font-size: 0.9rem;
  font-weight: 800;
}

.hidden {
  display: none !important;
}

.count {
  display: inline-grid;
  min-width: 24px;
  min-height: 24px;
  margin-left: 4px;
  place-items: center;
  color: #0d1117;
  background: #5eead4;
  border-radius: 999px;
  font-weight: 800;
}

.hero-band {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: clamp(28px, 6vw, 72px);
  min-height: 680px;
  padding: clamp(72px, 9vw, 118px) clamp(18px, 5vw, 72px) 80px;
  color: #f9fafb;
  background:
    linear-gradient(130deg, rgba(3, 7, 18, 0.9), rgba(3, 7, 18, 0.58)),
    url("/assets/cityscape_background.png");
  background-size: cover;
  background-position: center bottom;
}

.hero-content {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-band .eyebrow {
  color: #5eead4;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(3.4rem, 8vw, 7.25rem);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.hero-copy {
  max-width: 760px;
  color: #dbe3ed;
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  line-height: 1.6;
}

.hero-actions,
.seller-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 800;
}

.button.primary {
  color: #ffffff;
  background: var(--accent);
}

.button.primary:hover {
  background: var(--accent-strong);
}

.button.secondary {
  color: #f9fafb;
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
}

.button.small {
  min-height: 38px;
  padding: 0 13px;
  font-size: 0.9rem;
}

.market-snapshot {
  align-self: end;
  display: grid;
  gap: 14px;
}

.market-snapshot > div {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(13, 17, 23, 0.72);
}

.metric {
  display: block;
  margin-bottom: 4px;
  color: #5eead4;
  font-size: 2.2rem;
  font-weight: 900;
}

.section {
  padding: clamp(56px, 7vw, 92px) clamp(18px, 5vw, 72px);
}

.band-muted {
  background: var(--soft);
}

.band-dark {
  color: #f9fafb;
  background: var(--dark);
}

.section-heading {
  max-width: 900px;
  margin-bottom: 28px;
}

.section-heading p,
.split p,
.listing-card p,
.control-list p {
  color: var(--muted);
  line-height: 1.65;
}

.band-dark .section-heading p {
  color: #b9c3cf;
}

.section-heading.compact {
  max-width: 720px;
}

.toolbar,
.seller-form,
.panel-form,
.dashboard-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(160px, 240px) minmax(160px, 240px);
  gap: 14px;
  margin-bottom: 22px;
  padding: 18px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #c8d0da;
  border-radius: 8px;
  color: var(--ink);
  background: #ffffff;
}

input,
select {
  min-height: 44px;
  padding: 0 12px;
}

textarea {
  min-height: 112px;
  padding: 12px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(15, 118, 110, 0.2);
  border-color: var(--accent);
}

.category-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 22px;
}

.category-pill {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.category-pill strong {
  display: block;
  margin-bottom: 4px;
}

.category-pill span {
  color: var(--muted);
  font-size: 0.9rem;
}

.listing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.listing-card,
.empty-state,
.control-list article,
.cart-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.listing-card {
  display: grid;
  gap: 14px;
  padding: 18px;
}


.listing-card .benefit {
  margin-bottom: 0;
  color: #0f766e;
  font-weight: 900;
}
.listing-topline,
.cart-row,
.cart-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.badge {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  color: #134e4a;
  background: #ccfbf1;
  font-size: 0.78rem;
  font-weight: 900;
}

.price {
  font-size: 1.25rem;
  font-weight: 900;
}

.meta-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.92rem;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 28px;
  text-align: center;
}

.seller-form {
  display: grid;
  gap: 18px;
  max-width: 1080px;
  padding: 22px;
}

.auth-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}

.panel-form,
.dashboard-panel {
  display: grid;
  gap: 15px;
  padding: 20px;
}

.inline-form {
  display: grid;
  gap: 10px;
  width: min(100%, 420px);
}

.inline-form textarea {
  min-height: 86px;
}

.dashboard-panel {
  max-width: 1080px;
  margin-top: 18px;
}

.panel-form h3,
.dashboard-panel h3 {
  margin-bottom: 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.checkline {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  max-width: 680px;
  color: var(--ink);
  font-weight: 700;
}

.checkline input {
  width: 20px;
  min-width: 20px;
  height: 20px;
  margin-top: 2px;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--accent-strong);
  font-weight: 800;
}

.form-status.error {
  color: var(--danger);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1.2fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.control-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.control-list article {
  padding: 18px;
}

.cart-panel {
  display: grid;
  gap: 12px;
  max-width: 940px;
  padding: 18px;
  color: var(--ink);
}

.cart-row {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.cart-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.cart-total {
  padding-top: 10px;
  font-size: 1.15rem;
  font-weight: 900;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 22px clamp(18px, 5vw, 72px);
  color: #dce4ee;
  background: #090d12;
}

@media (max-width: 980px) {
  .hero-band,
  .split,
  .toolbar,
  .auth-grid {
    grid-template-columns: 1fr;
  }

  .category-strip,
  .listing-grid,
  .form-grid,
  .control-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .account-bar {
    width: 100%;
    justify-content: space-between;
  }

  .nav-links {
    width: 100%;
    flex-wrap: wrap;
  }

  .hero-band {
    min-height: 620px;
  }

  .category-strip,
  .listing-grid,
  .form-grid,
  .control-list {
    grid-template-columns: 1fr;
  }

  .listing-topline,
  .cart-row,
  .cart-total {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* Mobile viewport hardening */
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

img,
svg,
video {
  max-width: 100%;
}

.button,
.badge,
.metric,
.listing-card,
.cart-panel,
.dashboard-panel,
.panel-form,
.category-pill {
  overflow-wrap: anywhere;
}

@media (max-width: 680px) {
  body {
    background-attachment: scroll;
  }

  .site-header {
    gap: 12px;
    padding: 12px 16px;
  }

  .brand-banner {
    width: 152px;
    height: 44px;
  }

  .nav-links {
    gap: 8px;
    font-size: 0.9rem;
  }

  .nav-links a {
    min-height: 36px;
    padding: 8px 0;
  }

  .hero-band {
    min-height: auto;
    padding: 52px 16px 44px;
  }

  h1 {
    font-size: clamp(2.55rem, 15vw, 4rem);
    line-height: 1;
  }

  h2 {
    font-size: clamp(1.75rem, 9vw, 2.45rem);
  }

  .hero-copy {
    font-size: 1rem;
  }

  .hero-actions,
  .seller-controls {
    width: 100%;
  }

  .hero-actions .button,
  .seller-controls .button,
  .panel-form .button,
  .listing-card .button,
  .cart-panel .button {
    width: 100%;
  }

  .market-snapshot > div,
  .toolbar,
  .seller-form,
  .panel-form,
  .dashboard-panel,
  .cart-panel,
  .listing-card,
  .control-list article {
    padding: 16px;
  }

  .category-pill {
    text-align: left;
  }

  .section {
    padding: 44px 16px;
  }

  .account-bar {
    gap: 8px;
  }

  #session-label {
    min-width: 0;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 420px) {
  .site-header {
    position: static;
  }

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

  .nav-links a,
  .account-bar .button {
    font-size: 0.86rem;
  }

  .account-bar {
    align-items: stretch;
    flex-direction: column;
  }

  .account-bar .button {
    width: 100%;
  }

  .metric {
    font-size: 1.75rem;
  }

  input,
  select {
    min-height: 48px;
  }

  .button {
    min-height: 48px;
  }
}