/* ===========================
   SMILE AND SWAP STATION — THEME CSS
   =========================== */

:root {
  --bg: #FBF7F0;
  --bg-alt: #F4EFE6;
  --fg: #1A1814;
  --fg-muted: #6B6358;
  --accent: #D96B3A;
  --accent-hover: #C25E2E;
  --accent-sage: #2D5A3D;
  --accent-sage-light: #E8F0EB;
  --border: #E5DDD2;
  --white: #FFFFFF;
  --radius: 14px;
  --radius-sm: 8px;
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
.nav {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-logo svg { color: var(--accent); }

/* ── HERO ── */
.hero {
  padding: 80px 0 60px;
  background: var(--bg);
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.12;
  color: var(--fg);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 440px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background 0.15s, transform 0.1s;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }

/* ── SWAP GRID (Hero visual) ── */
.swap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.swap-card {
  border-radius: var(--radius);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  border: 1.5px solid;
  transition: transform 0.2s;
}
.swap-card:hover { transform: translateY(-2px); }
.swap-card-buy { background: #FEF6F1; border-color: #F5D5C4; }
.swap-card-sell { background: #FBF0E4; border-color: #F0D7BB; }
.swap-card-trade { background: #F1F7F3; border-color: #C8DFCC; }
.swap-card-give { background: #EAF0F8; border-color: #C5D5E8; }
.swap-card-buy .swap-icon { color: var(--accent); }
.swap-card-sell .swap-icon { color: #B86B2A; }
.swap-card-trade .swap-icon { color: var(--accent-sage); }
.swap-card-give .swap-icon { color: #4A7F8C; }
.swap-icon { width: 40px; height: 40px; }
.swap-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--fg);
  letter-spacing: 0.02em;
}

/* ── MODES ── */
.modes {
  background: var(--fg);
  padding: 56px 0;
}
.modes-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}
.mode-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}
.mode-num {
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--accent);
  line-height: 1;
}
.mode-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}
.mode-divider {
  width: 1px;
  height: 60px;
  background: #3A3530;
}
.mode-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 48px;
  flex: 1;
}
.mode-item {
  font-size: 0.92rem;
  color: #C8C0B4;
  line-height: 1.5;
}
.mode-item strong {
  color: var(--white);
  font-weight: 600;
}

/* ── SHARED SECTION STYLES ── */
.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  line-height: 1.2;
  color: var(--fg);
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}

/* ── HOW IT WORKS ── */
.howitworks {
  padding: 96px 0;
  background: var(--bg);
}
.howitworks-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.step {
  position: relative;
}
.step-num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  color: var(--border);
  line-height: 1;
  margin-bottom: 16px;
  display: block;
}
.step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}
.step p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ── NICHES ── */
.niches {
  padding: 96px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.niches-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}
.niches-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.niche-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.niche-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.niche-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-sage-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent-sage);
}
.niche-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}
.niche-card p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ── MANIFESTO ── */
.manifesto {
  padding: 96px 0;
  background: var(--bg);
}
.manifesto-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}
.manifesto-text { max-width: 680px; }
blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  line-height: 1.45;
  color: var(--fg);
  border-left: 3px solid var(--accent);
  padding-left: 24px;
  margin-bottom: 28px;
  letter-spacing: -0.01em;
}
.manifesto-text p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}

/* ── CLOSING ── */
.closing {
  background: var(--accent);
  padding: 80px 0;
}
.closing-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  text-align: center;
}
.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.closing p {
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
}

/* ── FOOTER ── */
.footer {
  background: var(--fg);
  padding: 32px 0;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--white);
}
.footer-brand svg { color: var(--accent); }
.footer-tagline {
  font-size: 0.85rem;
  color: #6B6358;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .swap-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .swap-card { padding: 16px 8px; }
  .swap-icon { width: 28px; height: 28px; }
  .swap-label { font-size: 0.75rem; }
  .modes-inner { flex-direction: column; }
  .mode-divider { display: none; }
  .mode-items { grid-template-columns: 1fr; }
  .steps-grid, .niches-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero { padding: 56px 0 40px; }
  .swap-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .howitworks, .niches, .manifesto { padding: 64px 0; }
  .closing { padding: 56px 0; }
}

/* ===========================
   SMILE AND SWAP STATION — ITEMS & MESSAGING
   =========================== */

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: auto;
}
.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-link:hover { color: var(--fg); }

/* Page inner */
.page-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 32px;
}

/* Browse page */
.browse { padding: 0 0 80px; }
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.page-header .section-heading { margin-bottom: 0; }

/* Filter bar */
.filter-bar {
  display: flex;
  gap: 12px;
  padding: 24px 0;
  flex-wrap: wrap;
}
.filter-link {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--fg-muted);
  border: 1.5px solid var(--border);
  background: var(--white);
  transition: all 0.15s;
}
.filter-link:hover {
  color: var(--fg);
  border-color: var(--fg-muted);
}
.filter-link-active {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}

/* Item grid */
.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

/* Item card */
.item-card {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  transition: border-color 0.2s, transform 0.2s;
  cursor: pointer;
}
.item-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.item-card-photo {
  aspect-ratio: 4/3;
  background: var(--bg-alt);
  overflow: hidden;
}
.item-card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.item-card-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.item-card-placeholder.mode-buy { background: #FEF6F1; }
.item-card-placeholder.mode-sell { background: #FBF0E4; }
.item-card-placeholder.mode-trade { background: #F1F7F3; }
.item-card-placeholder.mode-give { background: #EAF0F8; }
.mode-icon {
  font-size: 2rem;
  font-weight: 700;
  color: var(--fg-muted);
}
.item-card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.item-card-top {
  display: flex;
  align-items: center;
  gap: 8px;
}
.item-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  line-height: 1.3;
}
.item-card-price {
  font-size: 1.05rem;
  font-weight: 600;
}
.price-free { color: var(--accent-sage); }
.price-amount { color: var(--fg); }
.price-n/a { color: var(--fg-muted); }
.item-card-location {
  font-size: 0.82rem;
  color: var(--fg-muted);
}

/* Mode badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.badge-buy { background: #FEF6F1; color: #C25E2E; }
.badge-sell { background: #FBF0E4; color: #B86B2A; }
.badge-trade { background: #F1F7F3; color: var(--accent-sage); }
.badge-give { background: #EAF0F8; color: #4A7F8C; }
.badge-condition { background: #F5F0EB; color: #8B7355; font-size: 0.65rem; }
.badge-category { background: #EDEFF4; color: #5C6078; font-size: 0.65rem; }

/* New item form */
.new-item-page { padding: 0 0 80px; }
.item-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 600px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--fg);
}
.form-input, .form-textarea {
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--fg);
  background: var(--white);
  transition: border-color 0.15s;
  width: 100%;
}
.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-textarea { resize: vertical; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group-checkbox {
  justify-content: flex-end;
}
.form-checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg);
  cursor: pointer;
  margin-top: 4px;
}
.form-checkbox-label input { cursor: pointer; }
.form-actions {
  display: flex;
  gap: 12px;
  padding-top: 8px;
}
.btn-secondary {
  background: var(--bg-alt);
  color: var(--fg-muted);
  border: 1.5px solid var(--border);
}

/* Item detail */
.item-page { padding: 0 0 80px; }
.item-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.item-detail-photo {
  aspect-ratio: 1;
  background: var(--bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
}
.item-detail-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.item-detail-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.item-detail-placeholder.mode-buy { background: #FEF6F1; }
.item-detail-placeholder.mode-sell { background: #FBF0E4; }
.item-detail-placeholder.mode-trade { background: #F1F7F3; }
.item-detail-placeholder.mode-give { background: #EAF0F8; }
.item-detail-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.item-detail-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.item-detail-location {
  font-size: 0.85rem;
  color: var(--fg-muted);
}
.item-detail-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  line-height: 1.15;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.item-detail-price {
  font-size: 1.4rem;
  font-weight: 600;
}
.item-detail-description h2 {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 8px;
}
.item-detail-description p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}
.message-form h2 {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 12px;
}
.message-form form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.message-thread h2 {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 12px;
}
.message {
  padding: 14px 16px;
  border-radius: var(--radius);
  margin-bottom: 10px;
}
.message-own {
  background: var(--accent-sage-light);
  color: var(--fg);
}
.message-other {
  background: var(--white);
  border: 1.5px solid var(--border);
}
.message-content {
  font-size: 0.92rem;
  line-height: 1.55;
  white-space: pre-wrap;
}
.message-time {
  font-size: 0.78rem;
  color: var(--fg-muted);
  margin-top: 6px;
}
.item-back {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.item-back a {
  font-size: 0.9rem;
  color: var(--fg-muted);
  text-decoration: none;
}
.item-back a:hover { color: var(--fg); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 64px 32px;
  color: var(--fg-muted);
}
.empty-state a {
  color: var(--accent);
  font-weight: 600;
}

/* Messages placeholder */
.messages-page { padding: 0 0 80px; }

/* Responsive adjustments */
@media (max-width: 768px) {
  .nav-links { gap: 14px; }
  .nav-link { font-size: 0.85rem; }
  .item-detail { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .items-grid { gap: 16px; }
  .page-header { flex-direction: column; gap: 12px; align-items: flex-start; }
}

@media (max-width: 480px) {
  .page-inner { padding: 32px 20px; }
  .filter-bar { gap: 8px; padding: 16px 0; }
  .filter-link { padding: 7px 14px; font-size: 0.82rem; }
}