/* ============ Reset y base ============ */
*, *::before, *::after { box-sizing: border-box; }

:root {
  /* Paleta institucional Buenos Aires Ciudad */
  --color-ba-cyan: #00a0d2;
  --color-ba-cyan-dark: #0080b0;
  --color-ba-cyan-light: #e6f6fb;
  --color-ba-yellow: #ffd200;
  --color-ba-yellow-hover: #edc200;
  --color-ba-navy: #1a2845;
  --color-ba-dark: #333333;

  --color-bg: #f0f4f7;
  --color-surface: #ffffff;
  --color-surface-2: #f5f7f9;
  --color-text: #2c2c2a;
  --color-text-secondary: #555555;
  --color-text-tertiary: #888888;
  --color-border: #d8dde3;
  --color-border-strong: #bfc5cc;
  --color-primary: var(--color-ba-cyan);
  --color-primary-hover: var(--color-ba-cyan-dark);
  --color-warning-bg: #fff8dc;
  --color-warning-text: #856404;
  --color-danger: #c0392b;
  --color-success-bg: #eaf3de;
  --color-success-text: #3b6d11;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --font-sans: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Times New Roman", Times, serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.10);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ Header institucional ============ */
.app-header {
  background: linear-gradient(135deg, var(--color-ba-cyan) 0%, var(--color-ba-cyan-dark) 100%);
  padding: 0;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  position: relative;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  max-width: 1320px;
  margin: 0 auto;
}

.header-logo {
  height: 42px;
  width: auto;
  flex-shrink: 0;
}

.header-text {
  flex: 1;
}

.app-header h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.2px;
}

.app-header .subtitle {
  margin: 2px 0 0;
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  font-weight: 400;
}

/* Barra de título de sección (franja amarilla) */
.section-bar {
  background: var(--color-ba-yellow);
  padding: 10px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ba-dark);
  letter-spacing: 0.3px;
}

.section-bar .container {
  padding: 0;
}

/* ============ Footer ============ */
.app-footer {
  margin-top: 24px;
  padding: 14px 0 20px;
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 12px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.app-main { padding: 20px 16px; }

/* ============ Layout en dos columnas ============ */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
}
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-header {
  background: var(--color-surface-2);
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ba-navy);
}

.panel-body {
  padding: 16px;
}

/* ============ Tabs (estilo sidebar PRIISA) ============ */
.tab-bar {
  display: flex;
  gap: 0;
  margin-bottom: 16px;
  background: var(--color-ba-cyan-light);
  border-radius: var(--radius-md);
  padding: 3px;
  overflow-x: auto;
}
.tab {
  background: transparent;
  border: none;
  padding: 8px 14px;
  font-size: 13px;
  color: var(--color-ba-cyan-dark);
  cursor: pointer;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  font-family: inherit;
  font-weight: 500;
  transition: all 0.2s ease;
}
.tab:hover {
  background: rgba(0,160,210,0.12);
  color: var(--color-ba-navy);
}
.tab.active {
  background: var(--color-ba-cyan);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,160,210,0.3);
}

/* ============ Formulario ============ */
fieldset {
  border: none;
  padding: 0;
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}
fieldset:last-of-type { border-bottom: none; }
legend {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ba-cyan-dark);
  margin-bottom: 8px;
  padding: 0;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.field { margin-bottom: 10px; }
.field label {
  display: block;
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
  font-weight: 500;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

input[type="text"], input[type="email"], input[type="number"], select, textarea {
  width: 100%;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-ba-cyan);
  box-shadow: 0 0 0 3px rgba(0,160,210,0.15);
}

.letras {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--color-text-tertiary);
  font-style: italic;
  min-height: 16px;
}

/* ============ Botones ============ */
.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

.btn {
  flex: 1;
  min-width: 120px;
  padding: 10px 14px;
  font-size: 13px;
  font-family: inherit;
  font-weight: 600;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s, box-shadow 0.15s;
}
.btn:hover {
  background: var(--color-surface-2);
  box-shadow: var(--shadow-sm);
}
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--color-ba-yellow);
  color: var(--color-ba-dark);
  border-color: var(--color-ba-yellow);
  font-weight: 700;
}
.btn-primary:hover {
  background: var(--color-ba-yellow-hover);
  border-color: var(--color-ba-yellow-hover);
  box-shadow: 0 2px 6px rgba(255,210,0,0.35);
}

.btn-danger {
  color: var(--color-danger);
  border-color: rgba(192,57,43,0.3);
}
.btn-danger:hover { background: rgba(192,57,43,0.05); }

.status {
  margin: 10px 0 0;
  font-size: 12px;
  color: var(--color-success-text);
  min-height: 16px;
  font-weight: 500;
}
.status.error { color: var(--color-danger); }

/* ============ Vista previa ============ */
.preview-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin: 0 0 8px;
}
.preview {
  max-height: 70vh;
  overflow-y: auto;
  padding: 24px 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text);
}
.preview h3 { text-align: center; font-size: 14px; font-weight: bold; margin: 0 0 6px; font-family: var(--font-serif); }
.preview h4 { text-align: center; font-size: 13px; font-weight: bold; margin: 0 0 16px; font-family: var(--font-serif); }
.preview p { margin: 0 0 8px; text-align: justify; }
.preview .clausula { font-weight: bold; }
.preview .placeholder {
  background: var(--color-warning-bg);
  color: var(--color-warning-text);
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 500;
}

/* ============ Scrollbar estilizada ============ */
.preview::-webkit-scrollbar { width: 6px; }
.preview::-webkit-scrollbar-track { background: var(--color-surface-2); border-radius: 3px; }
.preview::-webkit-scrollbar-thumb { background: var(--color-border-strong); border-radius: 3px; }
.preview::-webkit-scrollbar-thumb:hover { background: var(--color-ba-cyan); }