/* Dark theme, mobile-first */
:root {
  --bg: #0f1114;
  --surface: #1a1d23;
  --surface-2: #22262e;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --border: rgba(255, 255, 255, 0.08);
  --primary: #7cb3ff;
  --primary-dim: rgba(124, 179, 255, 0.15);
  --danger: #f28b82;
  --success: #81c995;
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

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

a:hover {
  text-decoration: underline;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15, 17, 20, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.site-brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}

.site-brand:hover {
  text-decoration: none;
  color: var(--primary);
}

.site-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Layout */
.main-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem 1rem 2.5rem;
}

.page-title {
  margin: 0 0 1.25rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.page-login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
}

.login-title {
  margin: 0 0 0.25rem;
  font-size: 1.35rem;
}

.login-sub {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1rem 1.1rem;
  margin-bottom: 1rem;
}

.section-title {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
}

.filter-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.filter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-inline {
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
}

.field-label {
  font-size: 0.85rem;
  color: var(--muted);
  min-width: 3.2rem;
}

.field input[type="date"],
.field input[type="text"],
.field input[type="password"],
.field input[type="number"] {
  width: 100%;
  flex: 1;
  min-width: 0;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
  font-variant-numeric: tabular-nums;
}

.field input[type="number"]::-webkit-outer-spin-button,
.field input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.field input[type="date"]:focus,
.field input[type="text"]:focus,
.field input[type="password"]:focus,
.field input[type="number"]:focus {
  outline: none;
}

.field input[type="date"]:focus-visible,
.field input[type="text"]:focus-visible,
.field input[type="password"]:focus-visible,
.field input[type="number"]:focus-visible {
  border-color: rgba(124, 179, 255, 0.55);
  box-shadow: 0 0 0 3px var(--primary-dim);
}

.field input::placeholder {
  color: var(--muted);
  opacity: 1;
}

.field-check {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.field-check input {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--primary);
}

.hint {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Resumen extremos del rango */
.summary-trio {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: stretch;
}

.summary-box {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.85rem 0.65rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
}

.summary-box-caption {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.summary-box-date {
  display: block;
  margin: 0;
  font-size: 0.9rem;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.summary-box-metric {
  margin: 0;
  padding-top: 0.15rem;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.summary-box-metric.diff-up {
  color: var(--danger);
}

.summary-box-metric.diff-down {
  color: var(--success);
}

.summary-box-metric.diff-neutral {
  color: var(--muted);
}

.summary-box-diff .summary-box-metric {
  padding-top: 0.35rem;
}

.summary-box-diff .summary-box-caption {
  margin-bottom: 0.15rem;
}

@media (max-width: 360px) {
  .summary-trio {
    gap: 0.45rem;
  }

  .summary-box {
    padding: 0.65rem 0.4rem;
  }

  .summary-box-caption {
    font-size: 0.62rem;
  }

  .summary-box-date {
    font-size: 0.82rem;
  }
}

.empty-state {
  text-align: center;
  padding: 2rem 0.5rem;
  color: var(--muted);
}

/* Chart */
.chart-wrap {
  position: relative;
  width: 100%;
  height: min(52vh, 320px);
}

/* Table */
.table-scroll {
  overflow-x: auto;
  margin: 0 -0.25rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 0.55rem 0.45rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.data-table th {
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

.th-icon {
  width: 2.5rem;
  text-align: center;
}

.td-icon {
  text-align: center;
  color: var(--muted);
}

.icon-cell {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ico {
  display: block;
}

.td-diff {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.diff-up {
  color: var(--danger);
  font-weight: 600;
}

.diff-down {
  color: var(--success);
  font-weight: 600;
}

.diff-neutral {
  color: var(--muted);
}

.td-actions {
  text-align: right;
  white-space: nowrap;
}

.link-edit {
  font-size: 0.88rem;
}

/* Forms */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1rem 1.25rem;
}

.form-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.9rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  line-height: 1.2;
}

.btn:hover {
  text-decoration: none;
  filter: brightness(1.06);
}

.btn-primary {
  background: var(--primary);
  color: #0b0d10;
  border-color: transparent;
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-block {
  width: 100%;
}

.btn-small {
  padding: 0.4rem 0.65rem;
  font-size: 0.85rem;
}

/* Messages */
.msg {
  margin: 0;
  padding: 0.5rem 0.65rem;
  border-radius: 8px;
  font-size: 0.9rem;
}

.msg-error {
  background: rgba(242, 139, 130, 0.12);
  color: var(--danger);
  border: 1px solid rgba(242, 139, 130, 0.35);
}

/* Footer */
.site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem;
  text-align: center;
}

.muted {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0;
}

@media (min-width: 520px) {
  .filter-form {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-end;
  }

  .filter-form .field-inline {
    flex: 1;
    min-width: 200px;
  }

  .filter-actions {
    width: 100%;
  }
}