/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; color-scheme: light; }
body {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Buttons ── */
.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  padding: 7px 18px;
  border-radius: var(--r-pill);
  border: 1.5px solid var(--primary);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  transition: background 0.12s, opacity 0.12s;
  font-family: var(--font);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  min-height: 34px;
  letter-spacing: 0.01em;
}
.btn-primary:hover { opacity: 0.88; }
.btn-secondary {
  background: transparent;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  padding: 7px 18px;
  border-radius: var(--r-pill);
  border: 1.5px solid var(--primary);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  transition: background 0.12s;
  font-family: var(--font);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  min-height: 34px;
  letter-spacing: 0.01em;
}
.btn-secondary:hover { background: rgba(61,82,160,0.06); }

/* ── Instagram-style icon action buttons ── */
.action-btn {
  background: none;
  border: none;
  padding: 6px;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  color: var(--body);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
  transition: opacity 0.1s, color 0.12s;
  min-height: 36px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  border-radius: var(--r-sm);
}
.action-btn:hover { opacity: 0.7; }
.action-btn.upvoted { color: var(--coral); }
.action-btn.saved   { color: var(--primary); }

.action-btn-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--r-full);
  border: none;
  background: none;
  color: var(--body);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: opacity 0.1s;
  -webkit-tap-highlight-color: transparent;
}
.action-btn-icon:hover { opacity: 0.6; }
.action-btn-icon.share-done { color: var(--success); }

/* ── Search input ── */
.search-input {
  width: 100%;
  height: 36px;
  background: var(--surface-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--r-pill);
  padding: 0 var(--sp-md) 0 36px;
  font-family: var(--font);
  font-size: 14px;
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s, background 0.15s;
  -webkit-appearance: none;
}
.search-input:focus { border-color: var(--border-strong); background: var(--card-bg); }
.search-input::placeholder { color: var(--muted); }

/* ── Toast ── */
.toast-container {
  position: fixed;
  bottom: var(--sp-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  pointer-events: none;
  width: max-content;
  max-width: calc(100vw - 32px);
}
.toast {
  background: rgba(0,0,0,0.85);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 9px var(--sp-lg);
  border-radius: var(--r-pill);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
  white-space: nowrap;
  backdrop-filter: blur(8px);
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ── Modal — Instagram sheet style ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s;
}
.modal-backdrop.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--card-bg);
  border-radius: var(--r-xl);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: scale(0.94) translateY(8px);
  transition: transform 0.2s cubic-bezier(0.34,1.3,0.64,1);
  position: relative;
}
.modal-backdrop.open .modal { transform: scale(1) translateY(0); }
.modal-body { padding: var(--sp-lg) var(--sp-lg); }
.modal-title { font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 4px; line-height: 1.3; }
.modal-meta  { font-size: 12px; color: var(--muted); margin-bottom: var(--sp-lg); }
.modal-actions { display: flex; gap: var(--sp-xs); flex-wrap: wrap; }
.modal-close {
  position: absolute;
  top: var(--sp-sm);
  right: var(--sp-sm);
  width: 30px;
  height: 30px;
  border-radius: var(--r-full);
  background: rgba(0,0,0,0.06);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--body);
  -webkit-tap-highlight-color: transparent;
  transition: background 0.1s;
  z-index: 1;
}
.modal-close:hover { background: rgba(0,0,0,0.12); }

/* ── Nav — Instagram top bar ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 54px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  padding: 0 var(--sp-lg);
}
.nav-inner {
  max-width: 1060px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}
.nav-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  font-style: italic;
}
.nav-logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  flex-shrink: 0;
  font-style: normal;
}
.nav-search {
  flex: 1;
  max-width: 280px;
  position: relative;
}
.nav-search .search-input { width: 100%; }
.nav-search svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}
.nav-links { display: flex; gap: 4px; list-style: none; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: var(--r-pill);
  transition: background 0.1s, color 0.1s;
  display: flex;
  align-items: center;
  gap: 5px;
}
.nav-links a:hover { background: var(--surface-soft); color: var(--ink); }
.nav-links a.active { color: var(--ink); background: var(--surface-soft); }
.nav-actions { display: flex; align-items: center; gap: var(--sp-xs); margin-left: auto; }
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-xs);
  color: var(--body);
  -webkit-tap-highlight-color: transparent;
  border-radius: var(--r-sm);
}
.hamburger:hover { background: var(--surface-soft); }

/* ── Mobile drawer ── */
.nav-drawer {
  position: fixed;
  inset: 0;
  background: var(--card-bg);
  z-index: 120;
  padding: var(--sp-xxl) var(--sp-lg);
  transform: translateX(100%);
  transition: transform 0.25s cubic-bezier(0.4,0,0.2,1);
  overflow-y: auto;
}
.nav-drawer.open { transform: translateX(0); }
.nav-drawer ul { list-style: none; margin-top: var(--sp-xxl); }
.nav-drawer li + li { border-top: 1px solid var(--hairline); }
.nav-drawer a {
  display: block;
  padding: var(--sp-md) 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}
.drawer-close {
  position: absolute;
  top: var(--sp-lg);
  right: var(--sp-lg);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--body);
  padding: var(--sp-xs);
  -webkit-tap-highlight-color: transparent;
}

/* ── Footer ── */
footer {
  background: var(--card-bg);
  border-top: 1px solid var(--hairline);
  padding: var(--sp-xl) var(--sp-lg);
  margin-top: var(--sp-sec);
}
.footer-inner {
  max-width: 1060px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-xxl);
}
.footer-brand p { font-size: 12px; color: var(--muted); margin-top: var(--sp-sm); max-width: 260px; line-height: 1.6; }
.footer-col h4 { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: var(--sp-sm); }
.footer-col ul { list-style: none; }
.footer-col li + li { margin-top: 6px; }
.footer-col a { font-size: 13px; color: var(--body); text-decoration: none; transition: color 0.12s; }
.footer-col a:hover { color: var(--ink); }
.footer-legal {
  max-width: 1060px;
  margin: var(--sp-lg) auto 0;
  padding-top: var(--sp-lg);
  border-top: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-md);
}
.footer-legal p { font-size: 12px; color: var(--muted); }
.footer-legal-links { display: flex; gap: var(--sp-md); }
.footer-legal-links a { font-size: 12px; color: var(--muted); text-decoration: none; }
.footer-legal-links a:hover { text-decoration: underline; }

/* ── Sort pills — Instagram story ring style ── */
.sort-btn {
  background: var(--surface-soft);
  border: 1.5px solid var(--hairline);
  border-radius: var(--r-pill);
  padding: 6px 16px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.12s;
  min-height: 34px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.sort-btn:hover { background: var(--surface-strong); color: var(--body); border-color: var(--border-strong); }
.sort-btn.active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav { padding: 0 var(--sp-md); height: 48px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-actions .btn-primary span { display: none; }
  .nav-actions .btn-primary { padding: 7px 14px; }
  .nav-search { max-width: 100%; }
  .nav-logo { font-size: 18px; }

  footer { margin-top: var(--sp-xxl); padding: var(--sp-lg) var(--sp-md); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--sp-xl); }

  .modal-backdrop { padding: 0; align-items: flex-end; }
  .modal { border-radius: var(--r-xl) var(--r-xl) 0 0; max-height: 92vh; transform: translateY(24px); }
  .modal-backdrop.open .modal { transform: translateY(0); }
  .modal-body { padding: var(--sp-lg) var(--sp-md); }
  .modal-title { font-size: 15px; }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; gap: var(--sp-lg); }
  .sort-btn { font-size: 13px; padding: 6px 12px; }
  .toast { font-size: 13px; }
}