/* ═══════════════════════════════════════════════════════════
   MyStore — Shared Stylesheet
   Includes: variables, reset, header, footer, mobile bottom nav
   ═══════════════════════════════════════════════════════════ */

/* ── Variables ─────────────────────────────────────────── */
:root {
  --bg:        #fafaf8;
  --surface:   #ffffff;
  --border:    #e8e8e4;
  --border2:   #d4d4cc;
  --text:      #1a1a18;
  --muted:     #6b6b65;
  --accent:    #1c4ed8;
  --accent-h:  #1e40af;
  --accent-lt: #eff6ff;
  --success:   #059669;
  --danger:    #dc2626;
  --warn:      #d97706;
  --tag-bg:    #f0f0ec;
  --offer-bg:  #fff7ed;
  --offer-border: #fed7aa;
  --offer-text:   #c2410c;
  --bp-bg:     #f0fdf4;
  --bp-border: #bbf7d0;
  --bp-text:   #166534;
  --font:      'Sora', sans-serif;
  --mono:      'DM Mono', monospace;
  --radius:    12px;
  --hdr-h:     64px;
  --footer-h:  60px; /* mobile bottom nav height */
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  /* leave room for mobile bottom nav */
  padding-bottom: 0;
}
@media (max-width: 768px) {
  body { padding-bottom: var(--footer-h); }
}

/* ── Header ────────────────────────────────────────────── */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 1px 6px rgba(0,0,0,.06);
  transition: padding .25s;
}
.site-header.compact .header-inner { padding-top: .55rem; padding-bottom: .55rem; }
.header-inner {
  max-width: 1240px; margin: 0 auto;
  padding: .9rem 1.5rem;
  display: flex; align-items: center; gap: 1.25rem;
}
.header-logo { height: 38px; width: auto; display: block; flex-shrink: 0; }

/* Search bar */
.search-bar  { flex: 1; position: relative; }
.search-bar input {
  width: 100%;
  padding: .6rem 1rem .6rem 2.5rem;
  border: 1.5px solid var(--border2);
  border-radius: 999px;
  font-size: .9rem; font-family: var(--font);
  background: var(--bg); color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.search-bar input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(28,78,216,.12);
}
.search-icon {
  position: absolute; left: .85rem; top: 50%;
  transform: translateY(-50%);
  color: var(--muted); font-size: .9rem; pointer-events: none;
}
.header-actions { display: flex; align-items: center; gap: .6rem; flex-shrink: 0; }

/* Auth buttons */
.btn-nav {
  display: flex; align-items: center; gap: .4rem;
  padding: .45rem .9rem; border-radius: 999px;
  font-size: .82rem; font-weight: 600;
  text-decoration: none; white-space: nowrap;
  transition: background .15s, opacity .15s;
  border: 1.5px solid var(--border2); color: var(--text);
}
.btn-nav:hover { background: var(--tag-bg); }
.btn-nav.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-nav.primary:hover { background: var(--accent-h); opacity: 1; }
.btn-nav.ghost { border-color: transparent; color: var(--muted); font-size: .78rem; padding: .4rem .6rem; }
.btn-nav.ghost:hover { color: var(--danger); background: transparent; }

/* Avatar pill */
.avatar-pill {
  display: flex; align-items: center; gap: .5rem;
  padding: .35rem .75rem .35rem .35rem;
  border-radius: 999px; border: 1.5px solid var(--border2);
  text-decoration: none; color: var(--text); font-size: .82rem; font-weight: 600;
  transition: background .15s;
}
.avatar-pill:hover { background: var(--tag-bg); }
.avatar-circle {
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: .7rem; font-weight: 800; flex-shrink: 0;
}

/* Cart button */
.cart-btn {
  display: flex; align-items: center; gap: .4rem;
  padding: .5rem 1.1rem; border-radius: 999px;
  background: var(--accent); color: #fff;
  border: none; font-family: var(--font); font-size: .85rem; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: background .15s, transform .1s;
}
.cart-btn:hover { background: var(--accent-h); transform: translateY(-1px); }
.cart-count {
  background: #fff; color: var(--accent);
  border-radius: 999px; min-width: 18px; height: 18px;
  font-size: .7rem; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center; padding: 0 4px;
}

/* ── Site Footer ────────────────────────────────────────── */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem 1.5rem;
  margin-top: auto;
}
.footer-inner {
  max-width: 1240px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2rem;
}
.footer-brand .footer-logo { height: 34px; margin-bottom: .85rem; }
.footer-brand p {
  font-size: .82rem; color: var(--muted); line-height: 1.7; max-width: 220px;
}
.footer-col h4 {
  font-size: .72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--text); margin-bottom: .85rem;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: .45rem; }
.footer-col ul li a {
  font-size: .83rem; color: var(--muted); text-decoration: none;
  transition: color .15s;
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom {
  max-width: 1240px; margin: 1.75rem auto 0;
  padding-top: 1.1rem; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: .5rem;
}
.footer-bottom p { font-size: .75rem; color: var(--muted); }
.footer-bottom a { color: var(--muted); text-decoration: none; }
.footer-bottom a:hover { color: var(--accent); }

/* ── Mobile Bottom Navigation ───────────────────────────── */
.mobile-bottom-nav {
  display: none; /* hidden on desktop */
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--footer-h);
  background: var(--surface);
  border-top: 1px solid var(--border);
  box-shadow: 0 -2px 12px rgba(0,0,0,.08);
  z-index: 120;
  align-items: stretch;
}
.mob-nav-item {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: .2rem;
  text-decoration: none;
  color: var(--muted);
  font-size: .62rem; font-weight: 600;
  padding: .4rem .2rem;
  border: none; background: none; cursor: pointer;
  font-family: var(--font);
  transition: color .15s, background .15s;
  position: relative;
}
.mob-nav-item:hover,
.mob-nav-item.active { color: var(--accent); }
.mob-nav-item.active::before {
  content: '';
  position: absolute; top: 0; left: 20%; right: 20%;
  height: 2.5px; border-radius: 0 0 4px 4px;
  background: var(--accent);
}
.mob-nav-icon { font-size: 1.25rem; line-height: 1; }
.mob-nav-badge {
  position: absolute; top: .3rem; left: 50%;
  transform: translateX(2px);
  background: var(--danger); color: #fff;
  border-radius: 999px; min-width: 16px; height: 16px;
  font-size: .6rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  padding: 0 3px; line-height: 1;
}

@media (max-width: 768px) {
  .mobile-bottom-nav { display: flex; }
  /* Hide desktop cart btn & auth links on mobile — handled by bottom nav */
  .header-actions .cart-btn { display: none; }
  .header-actions .btn-nav.ghost { display: none; }
}

/* ── Toast ──────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: calc(var(--footer-h) + .75rem); left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #1a1a18; color: #fff;
  padding: .6rem 1.25rem; border-radius: 999px;
  font-size: .83rem; font-weight: 500;
  z-index: 300; transition: transform .3s; white-space: nowrap;
  max-width: calc(100vw - 2rem); text-overflow: ellipsis; overflow: hidden;
}
.toast.show { transform: translateX(-50%) translateY(0); }
@media (min-width: 769px) {
  .toast { bottom: 1.5rem; }
}

/* ── Back to top ────────────────────────────────────────── */
.back-top {
  position: fixed; bottom: calc(var(--footer-h) + .75rem); right: 1.5rem;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent); color: #fff;
  border: none; font-size: 1.1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 3px 10px rgba(0,0,0,.15);
  opacity: 0; transform: translateY(10px);
  transition: opacity .25s, transform .25s; z-index: 150;
}
.back-top.visible { opacity: 1; transform: translateY(0); }
@media (min-width: 769px) {
  .back-top { bottom: 1.5rem; }
}

/* ── Shared Responsive Utilities ────────────────────────── */
@media (max-width: 768px) {
  .header-inner { gap: .75rem; }
  .btn-nav span { display: none; }
  .header-logo { height: 32px; }
}
@media (max-width: 480px) {
  .header-logo { height: 28px; }
}