/* =========================================
   1. VARIABLES — Vía Transfer (portafolio)
   ========================================= */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;700&family=Source+Sans+3:wght@400;500;600;700&display=swap");

:root {
  /* Teal industrial + tinta (no purple / no azul cliente) */
  --primary: #1f6f5b;
  --primary-dark: #145044;
  --primary-light: #e4f2ed;

  --secondary: #14231c;
  --accent: #c9842a;
  --accent-hover: #a66a1c;

  --bg-body: #eef2ef;
  --bg-card: #fbfcfb;
  --bg-glass: rgba(251, 252, 251, 0.92);
  --bg-panel: #e8efe9;

  --text-main: #1a2b24;
  --text-muted: #5a6d64;
  --text-light: #8a9a92;

  --border-color: #cfdad3;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --shadow-sm: 0 1px 2px rgba(20, 35, 28, 0.06);
  --shadow-md: 0 6px 16px rgba(20, 35, 28, 0.08);
  --shadow-lg: 0 14px 28px rgba(20, 35, 28, 0.1);
  --shadow-blue: 0 10px 24px rgba(31, 111, 91, 0.22);

  --font-display: "Fraunces", Georgia, serif;
  --font-main: "Source Sans 3", "Segoe UI", sans-serif;
}

/* =========================================
   2. RESET Y BASE
   ========================================= */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  background-image: radial-gradient(
      ellipse 80% 50% at 10% -10%,
      rgba(31, 111, 91, 0.18),
      transparent 55%
    ),
    radial-gradient(ellipse 60% 40% at 95% 10%, rgba(201, 132, 42, 0.12), transparent 50%),
    linear-gradient(180deg, #e8efe9 0%, var(--bg-body) 40%, #e4ebe6 100%);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul {
  list-style: none;
}

/* =========================================
   3. HEADER Y NAVEGACIÓN
   ========================================= */
header {
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition:
    padding 0.3s ease,
    box-shadow 0.3s ease;
}

header.scrolled {
  padding: 0.6rem 0;
  box-shadow: var(--shadow-md);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: -0.03em;
}

.brand svg {
  width: 34px;
  height: 34px;
  color: var(--primary);
  transition: transform 0.35s ease;
}

.brand:hover svg {
  transform: rotate(-12deg);
}

nav {
  display: flex;
  gap: 30px;
}

nav a {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.95rem;
  position: relative;
}

nav a:hover,
nav a.active {
  color: var(--primary);
}

nav a.active::after {
  content: "";
  position: absolute;
  bottom: -24px;
  /* Ajuste para que quede en el borde del header */
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
}

/* =========================================
   4. COMPONENTES UI (Cards, Botones)
   ========================================= */
main {
  flex: 1;
  padding: 40px 0;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

/* Títulos */
h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Botones */
.btn-container {
  display: flex;
  gap: 15px;
  margin-top: 2rem;
  flex-wrap: wrap;
}

button,
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: white;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition:
    background 0.2s ease,
    transform 0.2s ease,
    box-shadow 0.2s ease;
  box-shadow: 0 4px 10px rgba(31, 111, 91, 0.25);
}

button:hover,
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(31, 111, 91, 0.3);
}

.btn-accent {
  background: var(--accent);
  box-shadow: 0 4px 6px rgba(245, 158, 11, 0.2);
}

.btn-accent:hover {
  background: var(--accent-hover);
  box-shadow: 0 8px 12px rgba(245, 158, 11, 0.3);
}

button[type="reset"] {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  box-shadow: none;
}

button[type="reset"]:hover {
  background: #f1f5f9;
  color: var(--text-main);
}

/* =========================================
   5. FORMULARIOS (Grid System Moderno)
   ========================================= */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
}

.form-group {
  position: relative;
  margin-bottom: 5px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 1rem;
  background-color: #f8fafc;
  transition: all 0.3s ease;
  color: var(--text-main);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  background-color: #fff;
  box-shadow: 0 0 0 4px rgba(31, 111, 91, 0.12);
}

.form-group input:disabled,
.form-group select:disabled {
  background-color: #f1f5f9;
  color: var(--text-light);
  cursor: not-allowed;
  border-color: #f1f5f9;
}

/* Selects dinámicos (listbox) */
select[size="5"] {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  z-index: 50;
  margin-top: 5px;
  border-color: var(--primary);
  background: #fff;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-sm);
}

small {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--text-light);
}

/* =========================================
   6. TABLAS (Diseño Financiero/Limpio)
   ========================================= */
.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.data-table th {
  background: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 1px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.data-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background-color: #f8fafc;
}

/* =========================================
   7. BANNER & FOOTER
   ========================================= */
.ad-banner-space {
  width: 100%;
  height: 100px;
  background-image: linear-gradient(
    45deg,
    #f1f5f9 25%,
    transparent 25%,
    transparent 50%,
    #f1f5f9 50%,
    #f1f5f9 75%,
    transparent 75%,
    transparent
  );
  background-size: 20px 20px;
  background-color: #fff;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  position: relative;
  margin-top: 20px;
}

.ad-banner-space::after {
  content: "Espacio Publicitario";
}

footer {
  background-color: var(--secondary);
  color: #fff;
  padding: 60px 0 20px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #fff;
  margin-bottom: 20px;
  font-size: 1.1rem;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col a {
  color: #94a3b8;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  color: #64748b;
  font-size: 0.9rem;
}

/* =========================================
   8. ANIMACIONES & UTILIDADES
   ========================================= */
.alert {
  padding: 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.alert-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-warning {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}

/* Keyframes */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-entry {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* =========================================
   9. DESGLOSE TIPO FACTURA (FASE 2)
   ========================================= */
.factura-desglose {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.factura-linea {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid #f1f5f9;
  color: var(--text-main);
  font-size: 1rem;
}

.factura-linea:first-child {
  font-weight: 600;
  color: var(--text-main);
}

.factura-linea span:last-child {
  font-weight: 600;
  color: var(--text-main);
}

.factura-subtotal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  font-weight: 600;
  border-top: 2px solid var(--border-color);
  border-bottom: 2px solid var(--border-color);
  margin-top: 10px;
  color: var(--text-main);
  font-size: 1.05rem;
}

.factura-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
  border-top: 3px solid var(--accent);
  margin-top: 15px;
}

.factura-total span:first-child {
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 1.2rem;
}

.factura-resumen {
  text-align: center;
  padding-top: 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  .nav-content {
    flex-direction: column;
    gap: 15px;
  }
  nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.9rem;
  }
  nav a.active::after {
    bottom: -5px;
  }
  .form-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .card {
    padding: 20px;
  }
  .form-group input,
  .form-group select {
    min-width: 0;
    width: 100%;
  }
  select[size="5"] {
    max-width: 100%;
    box-sizing: border-box;
  }
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.2rem;
  }
  .factura-desglose {
    padding: 20px;
  }
  .factura-total {
    font-size: 1.5rem;
    padding: 20px 0;
  }
  .factura-total span:first-child {
    font-size: 1rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .caracteristicas-grid {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }
  .card {
    padding: 16px;
  }
  h1 {
    font-size: 1.75rem;
  }
  nav {
    flex-direction: column;
    align-items: stretch;
  }
  nav a {
    text-align: center;
    padding: 10px;
  }
}

/* =========================================
   TOOLTIPS Y AYUDA CONTEXTUAL
   ========================================= */
.tooltip-trigger {
  position: relative;
  display: inline-block;
}

.tooltip-trigger:hover::after {
  content: attr(title);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 8px;
  padding: 8px 12px;
  background-color: var(--secondary);
  color: white;
  font-size: 0.85rem;
  font-weight: 400;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  pointer-events: none;
  max-width: 250px;
  white-space: normal;
  text-align: left;
  line-height: 1.4;
}

.tooltip-trigger:hover::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 2px;
  border: 6px solid transparent;
  border-top-color: var(--secondary);
  z-index: 1001;
  pointer-events: none;
}

/* Validación en tiempo real */
.form-group input:invalid:not(:placeholder-shown),
.form-group select:invalid:not(:placeholder-shown) {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group input:valid:not(:placeholder-shown),
.form-group select:valid:not(:placeholder-shown) {
  border-color: #10b981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Feedback visual para campos completados */
.form-group input:focus:valid,
.form-group select:focus:valid {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31, 111, 91, 0.12);
}

/* =========================================
   SPINNER DE CARGA
   ========================================= */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.6s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* =========================================
   AUTENTICACIÓN Y FORMULARIOS DE LOGIN
   ========================================= */
.auth-section {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 200px);
  padding: 40px 20px;
}

.auth-container {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 450px;
  border: 1px solid var(--border-color);
}

.auth-header {
  text-align: center;
  margin-bottom: 30px;
}

.auth-header h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.auth-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.auth-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 25px;
  border-bottom: 2px solid var(--border-color);
}

.auth-tab {
  flex: 1;
  padding: 12px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: -2px;
}

.auth-tab:hover {
  color: var(--primary);
}

.auth-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.auth-tab-content {
  display: none !important;
}

.auth-tab-content.active {
  display: block !important;
}

.auth-hint {
  margin-top: 1rem;
  padding: 12px 14px;
  background: var(--primary-light);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-muted);
  text-align: left;
}

.estimator-hero {
  text-align: center;
  margin-bottom: 2rem;
}

.estimator-hero .eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.estimator-panel {
  background: var(--bg-panel);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.estimator-panel--accent {
  background: var(--primary-light);
  border-color: #9ec4b6;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.checkbox-row input {
  width: auto;
  margin: 0;
}

.hero-home {
  text-align: center;
  padding: 4rem 1.25rem 3rem;
  position: relative;
}

.hero-home::before {
  content: "";
  position: absolute;
  inset: 0 -10% auto;
  height: 70%;
  background: linear-gradient(120deg, rgba(31, 111, 91, 0.08), transparent 60%);
  pointer-events: none;
  animation: heroWash 8s ease-in-out infinite alternate;
}

@keyframes heroWash {
  from {
    opacity: 0.55;
    transform: translateX(-2%);
  }
  to {
    opacity: 1;
    transform: translateX(2%);
  }
}

.auth-form {
  margin-bottom: 20px;
}

.auth-divider {
  text-align: center;
  margin: 25px 0;
  position: relative;
}

.auth-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-color);
}

.auth-divider span {
  background: var(--bg-card);
  padding: 0 15px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

.btn-google {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px;
  background: white;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 20px;
}

.btn-google:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

.btn-link {
  background: transparent;
  border: none;
  color: var(--primary);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 10px 0;
  text-align: center;
  width: 100%;
  margin-top: 10px;
}

.btn-link:hover {
  text-decoration: underline;
}

.auth-footer {
  text-align: center;
  margin-top: 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.auth-footer a {
  color: var(--primary);
  font-weight: 600;
}

.auth-footer a:hover {
  text-decoration: underline;
}

.mensaje {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.mensaje-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.mensaje-success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.auth-step {
  margin-top: 20px;
}

/* Contenedor para botones en línea (login) */
.auth-buttons-container {
  display: flex;
  gap: 15px;
  align-items: center;
  margin-bottom: 20px;
}

.auth-buttons-container .btn-primary {
  flex: 1;
}

.auth-buttons-container .btn-google {
  flex: 1;
  margin-bottom: 0;
}

/* Responsive para autenticación */
@media (max-width: 768px) {
  .auth-section {
    padding: 20px 16px;
    min-height: auto;
  }

  .auth-container {
    padding: 30px 20px;
    max-width: 100%;
    margin: 0 auto;
  }

  .auth-buttons-container {
    flex-direction: column;
    gap: 10px;
  }

  .auth-buttons-container .btn-primary,
  .auth-buttons-container .btn-google {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .auth-container {
    padding: 25px 16px;
  }

  .auth-header h1 {
    font-size: 1.75rem;
  }
}