/* ============================================================
   MrWeb — Sistema de Diseño
   Dark mode premium para extensión web de MrTienda
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Variables ──────────────────────────────────────────────── */
:root {
  /* Paleta oscura */
  --bg-base:        #0a0c10;
  --bg-surface:     #111318;
  --bg-card:        #16181f;
  --bg-card-hover:  #1c1f29;
  --bg-elevated:    #1e2130;
  --border:         #252836;
  --border-subtle:  #1a1d28;

  /* Acento principal — azul índigo */
  --accent:         #4f6ef7;
  --accent-hover:   #6480ff;
  --accent-glow:    rgba(79, 110, 247, 0.25);
  --accent-dim:     rgba(79, 110, 247, 0.12);

  /* Acento secundario — cyan */
  --cyan:           #06b6d4;
  --cyan-dim:       rgba(6, 182, 212, 0.12);

  /* Textos */
  --text-primary:   #f0f2f8;
  --text-secondary: #8892a4;
  --text-muted:     #4e5668;
  --text-accent:    #7c9dff;

  /* Estados */
  --success:        #22c55e;
  --success-dim:    rgba(34, 197, 94, 0.12);
  --warning:        #f59e0b;
  --warning-dim:    rgba(245, 158, 11, 0.12);
  --danger:         #ef4444;
  --danger-dim:     rgba(239, 68, 68, 0.12);

  /* Espaciado */
  --r-sm:    6px;
  --r-md:    10px;
  --r-lg:    14px;
  --r-xl:    20px;
  --r-full:  9999px;

  /* Sombras */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
  --shadow-accent: 0 4px 24px var(--accent-glow);

  /* Transiciones */
  --t-fast:   150ms ease;
  --t-normal: 250ms ease;
  --t-slow:   400ms ease;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

input, button, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

button { cursor: pointer; border: none; background: none; }

/* ── Scrollbar personalizado ────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-surface); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: var(--r-full); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Tipografía ─────────────────────────────────────────────── */
h1 { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.02em; }
h2 { font-size: 1.375rem; font-weight: 700; }
h3 { font-size: 1.125rem; font-weight: 600; }
h4 { font-size: 0.95rem;  font-weight: 600; }

.text-sm    { font-size: 0.8125rem; }
.text-xs    { font-size: 0.75rem; }
.text-muted { color: var(--text-secondary); }
.text-accent{ color: var(--text-accent); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-right   { text-align: right; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

/* ── Botones ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--r-md);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--t-normal);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 28px var(--accent-glow);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  color: var(--text-accent);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-elevated); color: var(--text-primary); }

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border-color: rgba(239,68,68,0.2);
}
.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-sm { padding: 6px 14px; font-size: 0.8125rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }
.btn-icon { padding: 8px; border-radius: var(--r-md); }

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* ── Inputs ─────────────────────────────────────────────────── */
.input-group { display: flex; flex-direction: column; gap: 6px; }

.input-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.input {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 10px 14px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  width: 100%;
}
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.input::placeholder { color: var(--text-muted); }

.input-icon-wrap {
  position: relative;
}
.input-icon-wrap .input { padding-left: 40px; }
.input-icon-wrap .icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

select.input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234e5668' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--r-full);
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-accent  { background: var(--accent-dim); color: var(--text-accent); }
.badge-success { background: var(--success-dim); color: var(--success); }
.badge-warning { background: var(--warning-dim); color: var(--warning); }
.badge-cyan    { background: var(--cyan-dim); color: var(--cyan); }

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  padding: 20px;
}
.card-hover {
  transition: border-color var(--t-normal), transform var(--t-normal), box-shadow var(--t-normal);
}
.card-hover:hover {
  border-color: var(--border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ── Divider ────────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 16px 0;
}

/* ── Toast notifications ────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--r-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  font-weight: 500;
  min-width: 280px;
  max-width: 360px;
  animation: toast-in var(--t-normal) ease;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger); }
.toast.info    { border-left: 3px solid var(--accent); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(20px); }
}

/* ── Loading spinner ────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty state ────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 60px 20px;
  color: var(--text-muted);
  text-align: center;
}
.empty-state svg { opacity: 0.4; }
.empty-state p { font-size: 0.9rem; }

/* ── Gradient text ──────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Utilities ──────────────────────────────────────────────── */
.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4  { gap: 4px; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-20 { gap: 20px; }
.mt-4   { margin-top: 4px; }
.mt-8   { margin-top: 8px; }
.mt-12  { margin-top: 12px; }
.mt-16  { margin-top: 16px; }
.mt-24  { margin-top: 24px; }
.mb-4   { margin-bottom: 4px; }
.mb-8   { margin-bottom: 8px; }
.mb-16  { margin-bottom: 16px; }
.p-16   { padding: 16px; }
.p-20   { padding: 20px; }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ── Animaciones de entrada ─────────────────────────────────── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scale-in {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

.anim-fade-up  { animation: fade-up  var(--t-slow) ease both; }
.anim-fade-in  { animation: fade-in  var(--t-slow) ease both; }
.anim-scale-in { animation: scale-in var(--t-normal) ease both; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  h1 { font-size: 1.4rem; }
  .btn-lg { padding: 12px 20px; }
}