/* ============================================================
   assets/css/main.css
   Estilos globales compartidos por todas las páginas públicas:
   index.php, catalog/index.php, catalog/vendor.php,
   checkout/, auth/, buyer/
   ============================================================ */

/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Paleta principal */
  --bg:        #0a0a14;
  --surface:   #0f0f1e;
  --surface2:  #12121f;
  --card:      rgba(255,255,255,.04);
  --border:    rgba(255,255,255,.08);
  --border-hover: rgba(124,58,237,.4);

  /* Marca */
  --accent:    #7c3aed;
  --accent2:   #a855f7;
  --accent-bg: rgba(124,58,237,.12);

  /* Texto */
  --text:      #e2e2f0;
  --text-soft: #c4c4d4;
  --muted:     #888;
  --muted2:    #555;

  /* Semánticos */
  --success:   #22c55e;
  --warning:   #f59e0b;
  --danger:    #ef4444;
  --info:      #0ea5e9;

  /* Fondos semánticos */
  --success-bg: rgba(34,197,94,.1);
  --warning-bg: rgba(245,158,11,.1);
  --danger-bg:  rgba(239,68,68,.1);
  --info-bg:    rgba(14,165,233,.1);

  /* Bordes semánticos */
  --success-border: rgba(34,197,94,.3);
  --warning-border: rgba(245,158,11,.3);
  --danger-border:  rgba(239,68,68,.3);
  --info-border:    rgba(14,165,233,.3);

  /* Layout */
  --radius:    12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --max-w:     1200px;
  --sidebar:   240px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Tipografía ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
}
p  { color: var(--text-soft); line-height: 1.65; }
a  { color: var(--accent2); text-decoration: none; transition: opacity .15s; }
a:hover { opacity: .85; }
small { font-size: .78rem; color: var(--muted); }
code  { font-family: 'Cascadia Code', 'Fira Code', monospace; font-size: .88em;
        background: rgba(255,255,255,.06); padding: 2px 6px; border-radius: 4px; }

/* ── Gradiente de texto ───────────────────────────────────── */
.text-gradient {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Contenedor ───────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
  background: rgba(10,10,20,.92);
  border-bottom: 1px solid var(--border);
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.navbar-logo {
  font-size: 1.15rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
}
.navbar-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.navbar-link {
  color: var(--muted);
  font-size: .875rem;
  text-decoration: none;
  transition: color .15s;
}
.navbar-link:hover { color: var(--text); opacity: 1; }
.navbar-actions { display: flex; gap: 10px; align-items: center; }

/* ── Botones ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: opacity .2s, transform .15s;
  white-space: nowrap;
  line-height: 1;
}
.btn:hover       { opacity: .86; transform: translateY(-1px); }
.btn:active      { transform: translateY(0); }
.btn:disabled    { opacity: .45; cursor: not-allowed; transform: none; }

.btn-primary  { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; }
.btn-secondary{ background: rgba(255,255,255,.07); border: 1px solid var(--border); color: var(--text); }
.btn-outline  { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-danger   { background: var(--danger-bg); border: 1px solid var(--danger-border); color: #fca5a5; }
.btn-success  { background: var(--success-bg); border: 1px solid var(--success-border); color: #86efac; }
.btn-ghost    { background: transparent; border: none; color: var(--muted); }
.btn-ghost:hover { color: var(--text); background: rgba(255,255,255,.05); }

.btn-sm { padding: 5px 13px; font-size: .78rem; border-radius: 6px; }
.btn-lg { padding: 13px 28px; font-size: 1rem; border-radius: 10px; }
.btn-full { width: 100%; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color .2s, transform .18s;
}
.card:hover { border-color: var(--border-hover); }
.card-hover:hover { transform: translateY(-2px); }

/* ── Formularios ──────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }

label {
  display: block;
  font-size: .78rem;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .04em;
  font-weight: 500;
}

input[type=text],
input[type=email],
input[type=password],
input[type=number],
input[type=url],
input[type=tel],
textarea,
select {
  width: 100%;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text);
  font-size: .9rem;
  font-family: inherit;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124,58,237,.12);
}
input::placeholder,
textarea::placeholder { color: var(--muted2); }
textarea { resize: vertical; min-height: 90px; }
select option { background: #1a1a2e; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 500px) { .form-row { grid-template-columns: 1fr; } }

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.badge-success   { background: var(--success-bg); color: #86efac; }
.badge-warning   { background: var(--warning-bg); color: #fcd34d; }
.badge-danger    { background: var(--danger-bg);  color: #fca5a5; }
.badge-info      { background: var(--info-bg);    color: #7dd3fc; }
.badge-neutral   { background: rgba(100,100,100,.15); color: #aaa; }
.badge-accent    { background: var(--accent-bg);  color: #c4b5fd; }

/* ── Alertas ──────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  margin-bottom: 18px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}
.alert-success { background: var(--success-bg); border: 1px solid var(--success-border); color: #86efac; }
.alert-warning { background: var(--warning-bg); border: 1px solid var(--warning-border); color: #fcd34d; }
.alert-danger  { background: var(--danger-bg);  border: 1px solid var(--danger-border);  color: #fca5a5; }
.alert-info    { background: var(--info-bg);    border: 1px solid var(--info-border);    color: #7dd3fc; }

/* ── Flash messages ───────────────────────────────────────── */
.flash-msg {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: .875rem;
  animation: fadeIn .3s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

/* ── Tablas ───────────────────────────────────────────────── */
.table-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
table { width: 100%; border-collapse: collapse; font-size: .85rem; }
th {
  text-align: left;
  padding: 11px 16px;
  color: var(--muted);
  font-weight: 500;
  font-size: .74rem;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: .04em;
  white-space: nowrap;
}
td {
  padding: 11px 16px;
  border-bottom: 1px solid rgba(255,255,255,.03);
  vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: rgba(255,255,255,.015); }

/* ── Paginación ───────────────────────────────────────────── */
.pagination {
  display: flex;
  gap: 6px;
  justify-content: center;
  align-items: center;
  margin-top: 24px;
  flex-wrap: wrap;
}
.page-btn {
  padding: 7px 14px;
  border-radius: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  text-decoration: none;
  font-size: .83rem;
  transition: all .15s;
  cursor: pointer;
}
.page-btn:hover,
.page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; opacity: 1; }
.page-info { font-size: .78rem; color: var(--muted); }

/* ── Filtros / tabs ───────────────────────────────────────── */
.filter-tabs {
  display: flex;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px;
  flex-wrap: wrap;
}
.filter-tab {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: .8rem;
  cursor: pointer;
  text-decoration: none;
  color: var(--muted);
  transition: background .15s, color .15s;
  white-space: nowrap;
  border: none;
  background: transparent;
}
.filter-tab:hover { color: var(--text); opacity: 1; }
.filter-tab.active { background: var(--accent); color: #fff; }

/* ── Search box ───────────────────────────────────────────── */
.search-box {
  position: relative;
  flex: 1;
  min-width: 180px;
}
.search-box input {
  padding-left: 36px;
}
.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: .9rem;
  pointer-events: none;
}

/* ── Toggle switch ────────────────────────────────────────── */
.switch { position: relative; width: 40px; height: 22px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.1);
  border-radius: 22px;
  cursor: pointer;
  transition: background .2s;
}
.slider::before {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  left: 3px; top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform .2s;
}
.switch input:checked + .slider { background: var(--accent); }
.switch input:checked + .slider::before { transform: translateX(18px); }

/* ── Upload zone ──────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  position: relative;
}
.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(124,58,237,.05);
}
.upload-zone input[type=file] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}
.upload-zone-icon  { font-size: 1.8rem; margin-bottom: 8px; }
.upload-zone-text  { font-size: .83rem; color: var(--muted); }
.upload-zone-hint  { font-size: .73rem; color: var(--muted); margin-top: 4px; opacity: .7; }

/* ── Progress bar ─────────────────────────────────────────── */
.progress-track {
  height: 5px;
  background: rgba(255,255,255,.08);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}
.progress-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width .4s ease;
}

/* ── Modales ──────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.75);
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 540px;
  max-height: 88vh;
  overflow-y: auto;
  animation: modalIn .2s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(.96) translateY(8px); }
  to   { opacity: 1; transform: none; }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 1rem;
  font-weight: 600;
}
.modal-body    { padding: 20px 24px; }
.modal-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.15rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: color .15s;
}
.modal-close:hover { color: var(--text); }

/* ── Empty states ─────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 52px 24px;
  color: var(--muted);
}
.empty-state-icon { font-size: 3rem; margin-bottom: 12px; }
.empty-state-text { font-size: .9rem; margin-bottom: 16px; }

/* ── Divider ──────────────────────────────────────────────── */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: .8rem;
  margin: 22px 0;
}
.divider::before,
.divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* ── Skeleton loader ──────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg,
    rgba(255,255,255,.04) 25%,
    rgba(255,255,255,.08) 50%,
    rgba(255,255,255,.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 6px;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* ── Password toggle ──────────────────────────────────────── */
.pass-wrap { position: relative; }
.pass-wrap input { padding-right: 44px; }
.eye-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: .95rem;
  padding: 4px;
  transition: color .15s;
}
.eye-btn:hover { color: var(--text); }

/* ── Password strength bar ────────────────────────────────── */
.strength-track {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 6px;
}
.strength-bar {
  height: 100%;
  border-radius: 2px;
  transition: width .3s, background .3s;
  width: 0;
}

/* ── Responsive helpers ───────────────────────────────────── */
.hide-mobile  { display: block; }
.show-mobile  { display: none; }
@media (max-width: 768px) {
  .hide-mobile { display: none; }
  .show-mobile { display: block; }
  .form-row    { grid-template-columns: 1fr; }
  .navbar      { padding: 0 16px; }
  .navbar-links { display: none; }
}

/* ── Scrollbar personalizado (Webkit) ─────────────────────── */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,.22); }

/* ── Utilidades ───────────────────────────────────────────── */
.text-muted   { color: var(--muted); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.mt-0  { margin-top:  0;    } .mb-0  { margin-bottom:  0;    }
.mt-8  { margin-top:  8px;  } .mb-8  { margin-bottom:  8px;  }
.mt-16 { margin-top: 16px;  } .mb-16 { margin-bottom: 16px;  }
.mt-24 { margin-top: 24px;  } .mb-24 { margin-bottom: 24px;  }
.mt-32 { margin-top: 32px;  } .mb-32 { margin-bottom: 32px;  }
.gap-8  { gap:  8px; } .gap-16 { gap: 16px; } .gap-24 { gap: 24px; }
.flex   { display: flex; } .flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; } .justify-between { justify-content: space-between; }
.flex-wrap    { flex-wrap: wrap; }
.w-full       { width: 100%; }
.truncate     { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }