:root {
  --ink: #14181f;
  --ink-soft: #565d6b;
  --line: #e3e6eb;
  --surface: #ffffff;
  --surface-muted: #f6f7f9;
  --accent: #245b52;
  --accent-soft: #e6efed;
  --btn-primary: #14152c;
  --tab-active-bg: #e0f2fe;
  --tab-active-text: #0369a1;
  --radius: 10px;
  --radius-sm: 6px;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--surface-muted);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--line);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.brand-logo {
  width: 84px;
  height: auto;
  display: block;
}

.brand-title {
  display: block;
}

.tabs {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tab-btn {
  text-align: left;
  padding: 10px 12px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.tab-btn:hover { background: var(--surface-muted); color: var(--ink); }

.tab-btn.active {
  background: var(--tab-active-bg);
  color: var(--tab-active-text);
  font-weight: 600;
}

.sidebar-hint {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-soft);
  margin-top: auto;
}

.sidebar-credit {
  font-size: 10.5px;
  color: #a3a9b3;
  margin-top: 14px;
}

/* ---------- Main content ---------- */
.content {
  padding: 40px 48px 80px;
  max-width: 780px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel-header h1 {
  font-size: 22px;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.panel-header p {
  margin: 0 0 28px;
  color: var(--ink-soft);
  font-size: 14px;
}

.warning-box {
  background: #fff8e6;
  border: 1px solid #f0dca3;
  color: #6b5216;
  font-size: 13.5px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

/* ---------- Forms ---------- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 20px;
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field-full { grid-column: 1 / -1; }

.field label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.field-hint {
  font-size: 12px;
  color: var(--ink-soft);
  margin: 2px 0 0;
}

input[type="text"],
input[type="date"],
select {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 14px;
  color: var(--ink);
  background: var(--surface);
  font-family: inherit;
}

input[type="text"]:focus,
input[type="date"]:focus,
select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

input[type="file"] {
  font-size: 13px;
}

.logo-preview-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
}

.logo-preview {
  max-width: 96px;
  max-height: 64px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 6px;
  background: var(--surface);
}

.field-colors .color-row {
  display: flex;
  gap: 24px;
}

.color-input {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-soft);
}

.color-input input[type="color"] {
  width: 40px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 2px;
  background: var(--surface);
  cursor: pointer;
}

/* ---------- Buttons ---------- */
.btn-primary {
  background: var(--btn-primary);
  color: white;
  border: none;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s ease;
}
.btn-primary:hover { filter: brightness(1.08); }

.btn-ghost {
  background: transparent;
  border: 1px dashed var(--line);
  color: var(--ink-soft);
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  cursor: pointer;
  width: fit-content;
  margin-top: 10px;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-tiny { padding: 5px 10px; font-size: 12px; margin-top: 0; }

.btn-whatsapp {
  background: #25d366;
  color: white;
  border: none;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s ease;
}
.btn-whatsapp:hover { filter: brightness(1.05); }

.saved-msg {
  margin-left: 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

/* ---------- Table ---------- */
.rows-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 6px;
}

.rows-table th {
  text-align: left;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
}

.rows-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
}

.rows-table input[type="text"] {
  width: 100%;
  padding: 7px 9px;
  font-size: 13.5px;
}

.row-remove {
  background: transparent;
  border: none;
  color: #b23b3b;
  font-size: 13px;
  cursor: pointer;
  padding: 4px 6px;
}
.row-remove:hover { text-decoration: underline; }

/* ---------- Actions / status ---------- */
.actions-bar {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}

.pdf-status {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
  min-height: 18px;
}

/* ---------- Header preview ---------- */
.preview-block {
  margin-top: 36px;
}

.preview-block h2 {
  font-size: 14px;
  margin: 0 0 10px;
  color: var(--ink-soft);
}

.header-preview {
  background: #001839;
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 90px;
}

.header-preview-logo {
  max-height: 64px;
  max-width: 120px;
  object-fit: contain;
}

.header-preview-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.header-preview-nombre {
  font-size: 14px;
  margin-top: 4px;
}

.header-preview-matricula {
  font-size: 12px;
  margin-top: 2px;
  opacity: 0.85;
}

/* ---------- Fatal error banner ---------- */
.fatal-error-banner {
  background: #b23b3b;
  color: white;
  font-size: 13.5px;
  line-height: 1.5;
  padding: 12px 20px;
  text-align: left;
}
.fatal-error-banner strong { font-weight: 700; }
.fatal-error-banner code {
  background: rgba(255,255,255,0.15);
  padding: 1px 5px;
  border-radius: 4px;
}

/* ---------- Comparación con cobertura actual ---------- */
.compare-block {
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.compare-row {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.compare-inputs {
  display: flex;
  gap: 14px;
  flex: 1 1 320px;
}

.compare-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.compare-field .sublabel {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: none;
  letter-spacing: 0;
}

.compare-note {
  flex: 1 1 220px;
  font-size: 12.5px;
  color: #a3a9b3;
  line-height: 1.5;
  margin: 4px 0 0;
}

/* ---------- Gráfico comparativo ---------- */
.comparison-chart-wrap {
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px 16px;
  background: var(--surface);
}

.comparison-chart-title {
  font-size: 14px;
  margin: 0 0 16px;
  color: var(--ink);
}

.comparison-chart {
  display: flex;
  align-items: flex-end;
  gap: 22px;
  min-height: 170px;
  padding-top: 24px;
}

.chart-bar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
  max-width: 110px;
}

.chart-bar-value {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
}

.chart-bar-pct {
  font-size: 11.5px;
  font-weight: 700;
}

.chart-bar-pct.is-saving { color: #1a8f5e; }
.chart-bar-pct.is-costlier { color: #b23b3b; }

.chart-bar {
  width: 100%;
  border-radius: 6px 6px 0 0;
  transition: height 0.2s ease;
}

.chart-bar.is-actual { background: #9aa1ad; }
.chart-bar.is-saving { background: #1a8f5e; }
.chart-bar.is-costlier { background: #b23b3b; }

.chart-bar-label {
  font-size: 11.5px;
  color: var(--ink-soft);
  text-align: center;
  line-height: 1.3;
  max-width: 100px;
  overflow-wrap: break-word;
}

/* ---------- Responsive ---------- */
@media (max-width: 780px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
  }
  .sidebar-hint { display: none; }
  .sidebar-credit { display: none; }
  .content { padding: 24px 20px 60px; }
  .form-grid { grid-template-columns: 1fr; }
  .actions-bar { flex-direction: column; }
  .compare-inputs { flex-direction: column; }
}