/* ================= Tokens (diseño oscuro, paleta validada) ================= */
:root {
  color-scheme: dark;
  --bg: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #232322;
  --border: rgba(255, 255, 255, 0.10);
  --text: #ffffff;
  --text-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --accent: #3987e5;
  --accent-strong: #5598e7;
  --good: #0ca30c;
  --warn: #fab219;
  --bad: #d03b3b;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
  font-size: 16px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-strong); }
code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 0.85em;
}
h1, h2, h3 { margin: 0; font-weight: 650; }

/* ================= Barra superior ================= */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; gap: 16px;
  padding: 12px 20px;
}
.brand { display: flex; align-items: center; gap: 8px; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand-name b { color: var(--accent-strong); font-weight: 750; }
.tabs { display: flex; gap: 4px; margin-left: auto; }
.tab {
  background: none; border: none; color: var(--text-2);
  font: inherit; font-size: 0.92rem; font-weight: 550;
  padding: 7px 14px; border-radius: 99px; cursor: pointer;
  display: flex; align-items: center; gap: 6px;
}
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab.active { background: var(--surface-2); color: var(--text); }
.tab-badge {
  background: var(--accent); color: #fff; font-size: 0.7rem; font-weight: 700;
  min-width: 18px; height: 18px; border-radius: 99px;
  display: inline-flex; align-items: center; justify-content: center; padding: 0 5px;
}

/* ================= Botones y campos ================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  font: inherit; font-size: 0.92rem; font-weight: 600;
  border-radius: var(--radius-sm); padding: 10px 16px;
  border: 1px solid transparent; cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-strong); }
.btn-ghost { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn-ghost:hover:not(:disabled) { border-color: var(--muted); }
.btn-danger { background: none; color: var(--bad); border-color: transparent; }
.btn-danger:hover { background: rgba(208, 59, 59, 0.12); }
.btn-icon { padding: 8px; border-radius: 8px; }

input[type="text"], input[type="password"], input[type="number"], select {
  font: inherit; color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  width: 100%;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent); }
input::placeholder { color: var(--muted); }

/* ================= Layout ================= */
.container { max-width: 1200px; margin: 0 auto; padding: 24px 20px 80px; }
.view-title { font-size: 1.5rem; margin-bottom: 4px; }
.view-sub { color: var(--text-2); margin: 0 0 20px; font-size: 0.93rem; }

/* ================= Añadir producto ================= */
.add-bar { display: flex; gap: 10px; margin-bottom: 6px; }
.add-input-wrap { position: relative; flex: 1; }
.add-icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.add-input-wrap input { padding-left: 40px; }
.add-hint { color: var(--muted); font-size: 0.82rem; margin: 0 0 24px; }

/* ================= Tarjetas de producto ================= */
.product-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.product-card { padding: 16px; display: flex; flex-direction: column; gap: 12px; cursor: pointer; transition: border-color 0.15s; }
.product-card:hover { border-color: var(--muted); }
.product-card.inactive { opacity: 0.55; }

.pc-top { display: flex; gap: 12px; }
.pc-img {
  width: 64px; height: 64px; flex: none;
  background: #fff; border-radius: 10px;
  object-fit: contain; padding: 4px;
}
.pc-img.placeholder { display: flex; align-items: center; justify-content: center; font-size: 1.6rem; background: var(--surface-2); }
.pc-title {
  font-size: 0.9rem; font-weight: 550; line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin: 0;
}
.pc-meta { display: flex; align-items: center; gap: 8px; margin-top: 6px; flex-wrap: wrap; }
.badge {
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.03em;
  padding: 2px 8px; border-radius: 99px;
  border: 1px solid var(--border); color: var(--text-2);
}
.badge.mx { color: #7fc98a; border-color: rgba(127, 201, 138, 0.35); }
.badge.us { color: #86b6ef; border-color: rgba(134, 182, 239, 0.35); }
.badge.status-err { color: var(--warn); border-color: rgba(250, 178, 25, 0.35); }

.pc-price-row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.pc-price { font-size: 1.65rem; font-weight: 700; letter-spacing: -0.02em; }
.pc-price.no-price { font-size: 1rem; color: var(--muted); font-weight: 500; }
.delta {
  display: inline-flex; align-items: center; gap: 3px;
  font-size: 0.8rem; font-weight: 700; padding: 2px 8px; border-radius: 99px;
}
.delta.down { color: #2fd32f; background: rgba(12, 163, 12, 0.14); }
.delta.up { color: #ff7b7b; background: rgba(208, 59, 59, 0.14); }
.delta.flat { color: var(--muted); background: var(--surface-2); }

.pc-spark { width: 100%; height: 44px; display: block; }
.pc-stats { display: flex; gap: 14px; font-size: 0.78rem; color: var(--muted); font-variant-numeric: tabular-nums; flex-wrap: wrap; }
.pc-stats b { color: var(--text-2); font-weight: 600; }
.pc-alert-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  font-size: 0.72rem; font-weight: 600; color: var(--text-2);
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 2px 9px; border-radius: 99px;
  display: inline-flex; align-items: center; gap: 4px;
}
.chip.target { color: #ffd479; }
.pc-actions { display: flex; gap: 6px; margin-top: 2px; border-top: 1px solid var(--border); padding-top: 10px; }
.pc-actions .spacer { flex: 1; }

/* ================= Estado vacío ================= */
.empty-state { text-align: center; padding: 70px 20px; color: var(--text-2); }
.empty-icon { font-size: 3rem; margin-bottom: 12px; }
.empty-state h2 { font-size: 1.2rem; color: var(--text); margin-bottom: 8px; }
.empty-state p { max-width: 420px; margin: 0 auto; font-size: 0.92rem; }

/* ================= Alertas ================= */
.alerts-list { display: flex; flex-direction: column; gap: 10px; }
.alert-item {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
}
.alert-emoji { font-size: 1.4rem; line-height: 1.2; }
.alert-body { flex: 1; min-width: 0; }
.alert-title { font-weight: 600; font-size: 0.92rem; }
.alert-sub { color: var(--text-2); font-size: 0.85rem; margin-top: 2px; }
.alert-meta { display: flex; gap: 10px; align-items: center; margin-top: 6px; font-size: 0.75rem; color: var(--muted); flex-wrap: wrap; }
.sent-tag { display: inline-flex; align-items: center; gap: 4px; font-weight: 600; }
.sent-tag.ok { color: #2fd32f; }
.sent-tag.fail { color: var(--warn); }

/* ================= Ajustes ================= */
.settings-card { padding: 24px; margin-bottom: 20px; }
.settings-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 8px; }
.settings-card h2 { font-size: 1.1rem; margin-bottom: 4px; }

.wizard { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-direction: column; gap: 20px; }
.wizard-step { display: flex; gap: 14px; }
.wizard-num {
  flex: none; width: 30px; height: 30px; border-radius: 99px;
  background: var(--surface-2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.85rem; color: var(--accent-strong);
}
.wizard-body { flex: 1; min-width: 0; }
.wizard-body h3 { font-size: 0.95rem; margin-bottom: 6px; }
.wizard-body p { color: var(--text-2); font-size: 0.88rem; margin: 0 0 8px; }
.field-row { display: flex; gap: 8px; flex-wrap: wrap; }
.field-row input, .field-row select { flex: 1; min-width: 180px; }
.field-status { font-size: 0.82rem; margin: 6px 0 0; min-height: 1.2em; }
.field-status.ok { color: #2fd32f; }
.field-status.err { color: #ff7b7b; }

/* Interruptor */
.switch { position: relative; display: inline-block; width: 46px; height: 26px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch-slider {
  position: absolute; inset: 0; cursor: pointer; border-radius: 99px;
  background: var(--surface-2); border: 1px solid var(--border);
  transition: background 0.2s;
}
.switch-slider::before {
  content: ""; position: absolute; width: 18px; height: 18px; border-radius: 99px;
  left: 3px; top: 3px; background: var(--muted); transition: transform 0.2s, background 0.2s;
}
.switch input:checked + .switch-slider { background: var(--accent); border-color: var(--accent); }
.switch input:checked + .switch-slider::before { transform: translateX(20px); background: #fff; }

/* ================= Modal ================= */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(0, 0, 0, 0.65);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 30px 14px; overflow-y: auto;
}
.modal {
  position: relative;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  width: 100%; max-width: 760px;
  padding: 24px;
}
.modal-close {
  position: absolute; top: 12px; right: 12px;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 99px;
  color: var(--text-2); width: 32px; height: 32px; cursor: pointer; font-size: 0.9rem;
}
.modal-close:hover { color: var(--text); }

.detail-head { display: flex; gap: 16px; margin-bottom: 18px; padding-right: 34px; }
.detail-img { width: 84px; height: 84px; flex: none; background: #fff; border-radius: 12px; object-fit: contain; padding: 5px; }
.detail-title { font-size: 1.05rem; font-weight: 600; line-height: 1.35; }

.stat-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin-bottom: 18px; }
.stat-tile { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; }
.stat-label { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.stat-value { font-size: 1.25rem; font-weight: 700; margin-top: 2px; letter-spacing: -0.01em; }
.stat-value.good { color: #2fd32f; }
.stat-value.bad { color: #ff7b7b; }

.range-tabs { display: flex; gap: 4px; margin-bottom: 10px; }
.range-tab {
  font: inherit; font-size: 0.8rem; font-weight: 600; color: var(--text-2);
  background: none; border: 1px solid transparent; border-radius: 99px;
  padding: 4px 12px; cursor: pointer;
}
.range-tab:hover { color: var(--text); }
.range-tab.active { background: var(--surface-2); border-color: var(--border); color: var(--text); }

.chart-wrap { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 6px 4px; margin-bottom: 20px; }
.chart-svg { display: block; width: 100%; height: 260px; }
.chart-tooltip {
  position: absolute; pointer-events: none; z-index: 5;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 10px; font-size: 0.78rem; box-shadow: var(--shadow);
  white-space: nowrap; transform: translate(-50%, -110%);
  font-variant-numeric: tabular-nums;
}
.chart-tooltip .tt-price { font-weight: 700; font-size: 0.9rem; }
.chart-tooltip .tt-date { color: var(--muted); }
.chart-empty { color: var(--muted); text-align: center; padding: 40px 0; font-size: 0.9rem; }

.detail-form { border-top: 1px solid var(--border); padding-top: 18px; }
.detail-form h3 { font-size: 0.95rem; margin-bottom: 12px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.form-field label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--text-2); margin-bottom: 5px; }
.check-row { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; font-size: 0.88rem; color: var(--text-2); }
.detail-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.detail-actions .spacer { flex: 1; }

/* ================= Toast ================= */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 200;
  background: var(--surface-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 99px;
  padding: 11px 22px; font-size: 0.9rem; font-weight: 550;
  box-shadow: var(--shadow); max-width: min(92vw, 480px); text-align: center;
}
.toast.err { border-color: rgba(208, 59, 59, 0.5); }
.toast.ok { border-color: rgba(12, 163, 12, 0.5); }

/* ================= Login ================= */
.login-body { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-wrap { width: 100%; max-width: 400px; display: flex; flex-direction: column; align-items: center; gap: 22px; }
.login-brand { display: flex; align-items: center; gap: 10px; font-size: 1.6rem; letter-spacing: -0.01em; }
.login-card { width: 100%; padding: 28px 26px; display: flex; flex-direction: column; gap: 14px; }
.login-card h1 { font-size: 1.25rem; }
.login-card .view-sub { margin-bottom: 2px; }
.login-card .form-field label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--text-2); margin-bottom: 5px; }
.login-btn { width: 100%; padding: 12px; font-size: 1rem; }
.login-foot { color: var(--muted); font-size: 0.78rem; text-align: center; margin: 0; }

.spin { animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ================= Responsivo ================= */
@media (max-width: 720px) {
  .topbar-inner { flex-wrap: wrap; padding: 10px 14px; gap: 8px; }
  .tabs { order: 3; width: 100%; margin-left: 0; justify-content: space-around; }
  .btn-label { display: none; }
  .container { padding: 16px 14px 70px; }
  .add-bar { flex-direction: column; }
  .product-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .modal { padding: 18px 14px; }
  .modal-backdrop { padding: 12px 8px; }
  .chart-svg { height: 210px; }
}