:root {
  /* Variables CSS principales */
  --primary-color: #1FB8CD;
  --secondary-color: #E8F8F9;
  --success-color: #28A745;
  --danger-color: #DB4545;
  --warning-color: #FFC107;
  --info-color: #17A2B8;

  /* Colores base */
  --bg-color: #ffffff;
  --surface-color: #f8f9fa;
  --text-color: #212529;
  --text-secondary: #6c757d;
  --border-color: #dee2e6;
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --card-bg: #ffffff;
  --input-bg: #ffffff;
  --input-border: #ced4da;

  /* Colors */
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-primary-active: rgba(26, 104, 115, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-secondary-hover: rgba(94, 82, 64, 0.2);
  --color-secondary-active: rgba(94, 82, 64, 0.25);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);
  --color-card-border: rgba(94, 82, 64, 0.12);
  --color-card-border-inner: rgba(94, 82, 64, 0.12);
  --color-error: rgba(192, 21, 47, 1);
  --color-success: rgba(33, 128, 141, 1);
  --color-warning: rgba(168, 75, 47, 1);
  --color-info: rgba(98, 108, 113, 1);
  --color-focus-ring: rgba(33, 128, 141, 0.4);
  --color-select-caret: rgba(19, 52, 59, 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Estilos base actualizados */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Header con selector de idioma */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding: 1.5rem 0;
  border-bottom: 2px solid var(--border-color);
}

.app-header h1 {
  color: var(--text-color);
  font-size: 2.4rem;
  /* 20% más grande que 2rem */
  font-weight: 700;
  margin: 0;
  flex-grow: 1;
  text-align: center;
}

.language-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 150px;
}

.language-selector label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.form-control--compact {
  padding: 0.4rem 0.7rem !important;
  font-size: 0.9rem !important;
  min-width: 90px;
}

/* Responsive: en móviles, stack verticalmente */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .app-header h1 {
    text-align: center;
    flex-grow: 0;
  }

  .language-selector {
    justify-content: center;
    min-width: auto;
  }
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-md);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--color-primary-hover);
}

code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
  position: relative;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(31, 184, 205, 0.1);
}

.btn--primary {
  background: var(--primary-color);
  color: white;
}

.btn--primary:hover {
  background: #1B9AAA;
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--surface-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.btn--secondary:hover {
  background: var(--border-color);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--outline:hover {
  background: var(--color-secondary);
}

.btn--sm {
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
  border-radius: 8px;
}

.btn--full-width {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form elements */
.form-control {
  display: block;
  width: 100%;
  padding: 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-color);
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  transition: all 0.3s ease;
}

textarea.form-control {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
}

select.form-control {
  padding: var(--space-8) var(--space-12);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
}

/* Add a dark mode specific caret */
@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

/* Also handle data-color-scheme */
[data-color-scheme="dark"] select.form-control {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
  background-image: var(--select-caret-light);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(31, 184, 205, 0.1);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-color);
}

.form-group {
  margin-bottom: 1rem;
}

/* Card component */
.card {
  background-color: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all 0.3s ease;
  margin-bottom: 1.5rem;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card__header {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--surface-color);
}

.card__header h2 {
  color: var(--text-color);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.card__body {
  padding: 1rem;
}

/* Status indicators - simplified with CSS variables */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.status--success {
  background-color: rgba(var(--color-success-rgb, 33, 128, 141),
      var(--status-bg-opacity));
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(var(--color-error-rgb, 192, 21, 47),
      var(--status-bg-opacity));
  color: var(--color-error);
  border: 1px solid rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(var(--color-warning-rgb, 168, 75, 47),
      var(--status-bg-opacity));
  color: var(--color-warning);
  border: 1px solid rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(var(--color-info-rgb, 98, 108, 113),
      var(--status-bg-opacity));
  color: var(--color-info);
  border: 1px solid rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* Container layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* Utility classes */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-4 {
  gap: var(--space-4);
}

.gap-8 {
  gap: var(--space-8);
}

.gap-16 {
  gap: var(--space-16);
}

.m-0 {
  margin: 0;
}

.mt-8 {
  margin-top: var(--space-8);
}

.mb-8 {
  margin-bottom: var(--space-8);
}

.mx-8 {
  margin-left: var(--space-8);
  margin-right: var(--space-8);
}

.my-8 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.p-0 {
  padding: 0;
}

.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.px-8 {
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}

.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.px-16 {
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

.block {
  display: block;
}

.hidden {
  display: none;
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Dark mode specifics */
[data-color-scheme="dark"] .btn--outline {
  border: 1px solid var(--color-border-secondary);
}

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://www.perplexity.ai/fonts/FKGroteskNeue.woff2') format('woff2');
}

/* Application-specific styles */

.loan-config-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
}

@media (min-width: 768px) {
  .loan-config-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .loan-config-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.contribution-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  margin-bottom: var(--space-16);
}

@media (min-width: 768px) {
  .contribution-form-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .contribution-form-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.rate-change-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 768px) {
  .rate-change-form-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .rate-change-form-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.radio-label input[type="radio"] {
  accent-color: var(--color-primary);
}

.contributions-list,
.rate-changes-list {
  margin-top: var(--space-16);
}

.contribution-item,
.rate-change-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-12);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-8);
}

.contribution-item.single {
  border-left: 4px solid #1FB8CD;
}

.contribution-item.recurring {
  border-left: 4px solid #FFC185;
}

.item-content {
  flex: 1;
  font-size: var(--font-size-sm);
}

.remove-btn {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-xs);
  background-color: var(--color-error);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.remove-btn:hover {
  background-color: rgba(192, 21, 47, 0.8);
}

/* Header Controls Container */
.header-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Manual Dropdown specific */
.manual-dropdown {
  position: relative;
  z-index: 1001;
}

.manual-section-header {
  position: relative;
  overflow: visible;
  /* Ensure details doesn't clip absolute children */
}

.manual-title-header {
  cursor: pointer;
  font-weight: 500;
  color: var(--text-color);
  list-style: none;
  /* Remove default triangle */
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  white-space: nowrap;
}

.manual-title-header::-webkit-details-marker {
  display: none;
}

.manual-title-header:hover {
  background-color: var(--border-color);
}

.manual-title-header::after {
  content: "📖";
  /* Icono de libro */
}

/* Dropdown Content */
/* Dropdown Content - FIXED POSITION STRATEGY */
.manual-content-header {
  position: fixed;
  /* Fix to viewport to avoid clipping */
  top: 100px;
  /* Position below header usually */
  right: 20px;
  width: 400px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
  overscroll-behavior: contain;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  padding: 1.5rem;
  text-align: left;
  z-index: 10000;
  /* Super high z-index */
  scrollbar-width: thin;
  scrollbar-color: var(--text-secondary) var(--border-color);
}

/* Backdrop for desktop too to ensure it closes */
.manual-section-header[open]::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.1);
  /* Subtle backdrop */
  z-index: 9999;
  cursor: default;
}

@media (max-width: 768px) {
  .manual-content-header {
    top: 50%;
    left: 50%;
    right: auto;
    transform: translate(-50%, -50%);
    width: 90vw;
  }

  .manual-section-header[open]::before {
    background: rgba(0, 0, 0, 0.5);
    /* Darker on mobile */
  }
}

/* Scrollbar styling for Webkit */
.manual-content-header::-webkit-scrollbar {
  width: 8px;
}

.manual-content-header::-webkit-scrollbar-track {
  background: var(--surface-color);
  border-radius: 4px;
}

.manual-content-header::-webkit-scrollbar-thumb {
  background-color: var(--text-secondary);
  border-radius: 4px;
}

@media (max-width: 640px) {
  .manual-content-header {
    position: fixed;
    /* Pantalla completa en móviles */
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90vw;
    right: auto;
    max-height: 80vh;
    /* Max height safe area */
  }

  /* Backdrop for mobile to focus attention */
  .manual-section-header[open]::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
  }
}

.manual-content-header h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.manual-content-header h4 {
  font-size: 1rem;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.manual-content-header p,
.manual-content-header ul {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.manual-content-header ul {
  padding-left: 1.2rem;
}

.manual-content-header li {
  margin-bottom: 0.3rem;
}

.manual-content ul ul {
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.calc-button-container {
  text-align: center;
  margin: var(--space-32) 0;
}

.results-section {
  margin-top: var(--space-32);
}

.summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
}

@media (min-width: 768px) {
  .summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .summary-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.summary-item {
  text-align: center;
  padding: var(--space-16);
  background-color: var(--color-secondary);
  border-radius: var(--radius-base);
}

.summary-value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  display: block;
}

.summary-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
}

.chart-container {
  position: relative;
  height: 400px;
}

.table-container {
  overflow-x: auto;
}

.amortization-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.amortization-table th,
.amortization-table td {
  padding: var(--space-8) var(--space-12);
  text-align: right;
  border-bottom: 1px solid var(--color-border);
}

.amortization-table th {
  background-color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
  position: sticky;
  top: 0;
}

.amortization-table th:first-child,
.amortization-table td:first-child,
.amortization-table th:nth-child(2),
.amortization-table td:nth-child(2) {
  text-align: left;
}

/* Enhanced styles for new features */

/* Error and success states */
.form-control.error-input {
  border-color: var(--color-error);
  box-shadow: 0 0 0 2px rgba(var(--color-error-rgb), 0.1);
}

.form-control.success-highlight {
  border-color: var(--color-success);
  box-shadow: 0 0 0 2px rgba(var(--color-success-rgb), 0.1);
  animation: successPulse 0.6s ease-in-out;
}

@keyframes successPulse {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.02);
  }

  100% {
    transform: scale(1);
  }
}

.error-message {
  color: var(--color-error);
  font-size: var(--font-size-xs);
  margin-top: var(--space-4);
  padding: var(--space-4) var(--space-8);
  background-color: rgba(var(--color-error-rgb), 0.1);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(var(--color-error-rgb), 0.2);
}

/* Notifications */
.notification {
  position: fixed;
  top: var(--space-20);
  right: var(--space-20);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  z-index: 1000;
  min-width: 300px;
  max-width: 500px;
  transform: translateY(-20px);
  opacity: 0;
  transition: all 0.3s var(--ease-standard);
  box-shadow: var(--shadow-lg);
}

.success-notification {
  background-color: rgba(var(--color-success-rgb), 0.1);
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb), 0.3);
}

.error-notification {
  background-color: rgba(var(--color-error-rgb), 0.1);
  color: var(--color-error);
  border: 1px solid rgba(var(--color-error-rgb), 0.3);
}

.info-notification {
  background-color: rgba(var(--color-info-rgb), 0.1);
  color: var(--color-info);
  border: 1px solid rgba(var(--color-info-rgb), 0.3);
}

/* Empty list messages */
.empty-list-message {
  color: var(--color-text-secondary);
  font-style: italic;
  font-size: var(--font-size-sm);
  padding: var(--space-16);
  text-align: center;
  background-color: var(--color-secondary);
  border-radius: var(--radius-base);
  margin: var(--space-8) 0;
}

/* Info text */
.info-text {
  font-size: var(--font-size-sm);
  color: var(--color-info);
  background-color: rgba(var(--color-info-rgb), 0.1);
  padding: var(--space-12);
  border-radius: var(--radius-base);
  border: 1px solid rgba(var(--color-info-rgb), 0.2);
  margin-top: var(--space-16);
}

/* Loading indicator */
.loading-indicator {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-secondary);
  border-top: 4px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--space-16);
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.loading-indicator p {
  color: white;
  font-weight: var(--font-weight-medium);
  margin: 0;
}

/* Strategy labels */
.strategy-label {
  font-style: italic;
  color: var(--color-warning);
}

/* Rate change row highlighting */
.rate-change-row {
  background-color: rgba(var(--color-warning-rgb), 0.05);
}

.rate-change-row:hover {
  background-color: rgba(var(--color-warning-rgb), 0.1);
}

/* Term reduction badge */
.term-reduction-badge {
  display: inline-block;
  width: 16px;
  height: 16px;
  background-color: var(--color-success);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-align: center;
  line-height: 16px;
  border-radius: 50%;
  margin-left: var(--space-4);
  cursor: help;
}

/* Colored Tabs & Multiline Support */
.tab-btn {
  white-space: normal;
  /* Permitir doble renglón */
  text-align: center;
  line-height: 1.2;
  padding: 0.8rem 0.5rem;
  height: 100%;
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  border-bottom: 3px solid transparent;
  opacity: 0.7;
}

.tab-btn.active {
  opacity: 1;
  font-weight: 600;
  background-color: var(--surface-color);
}

/* Specific Tab Colors */
.tab-btn[data-tab="config"].active {
  border-bottom-color: #1FB8CD;
  /* Cyan */
  color: #1FB8CD;
}

.tab-btn[data-tab="contributions"].active {
  border-bottom-color: #28A745;
  /* Green */
  color: #28A745;
}

.tab-btn[data-tab="rates"].active {
  border-bottom-color: #DB4545;
  /* Red/Orange */
  color: #DB4545;
}

.tab-btn[data-tab="manual"].active {
  border-bottom-color: #FF9800;
  /* Orange/Gold */
  color: #FF9800;
}

/* Dark Mode Adjustments for Tabs */
@media (prefers-color-scheme: dark) {
  .tab-btn[data-tab="config"].active {
    color: #4DD0E1;
    border-bottom-color: #4DD0E1;
  }

  .tab-btn[data-tab="contributions"].active {
    color: #66BB6A;
    border-bottom-color: #66BB6A;
  }

  .tab-btn[data-tab="rates"].active {
    color: #EF5350;
    border-bottom-color: #EF5350;
  }

  .tab-btn[data-tab="manual"].active {
    color: #FFB74D;
    border-bottom-color: #FFB74D;
  }
}

/* Layout Optimization to prevent scroll */
.input-group-compact {
  display: flex;
  gap: 0.5rem;
  flex-wrap: nowrap;
  /* Tratar de mantener en una línea */
}

@media (max-width: 600px) {
  .input-group-compact {
    flex-wrap: wrap;
    /* Solo envolver en pantallas muy pequeñas */
  }

  .input-group-compact>* {
    flex: 1;
    min-width: 80px;
    /* Ancho mínimo para inputs */
  }

  .tabs {
    display: flex;
    /* Ensure flex behavior */
    flex-wrap: nowrap;
    overflow-x: hidden;
    /* Prevent scrolling */
    justify-content: space-between;
    /* Distribute evenly */
    width: 100%;
  }

  .tab-btn {
    flex: 1 1 0;
    /* Grow, shrink, equal basis */
    width: 0;
    /* Allow shrinking below content size */
    padding: 0.6rem 0.2rem;
    /* Reduced padding */
    font-size: 0.75rem;
    /* Smaller font */
    white-space: normal;
    /* Allow wrap */
    line-height: 1.1;
    text-align: center;
    border-radius: 6px;
    /* Slightly smaller radius */
  }
}

/* Manual Content Styling */
.manual-content-body {
  padding: 1.5rem;
  line-height: 1.6;
}


/* Tema automático basado en preferencias del sistema */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --text-color: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #333333;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    --card-bg: #1e1e1e;
    --input-bg: #2d2d2d;
    --input-border: #404040;

    --color-background: rgba(31, 33, 33, 1);
    --color-surface: rgba(38, 40, 40, 1);
    --color-text: rgba(245, 245, 245, 1);
    --color-text-secondary: rgba(167, 169, 169, 0.7);
    --color-border: rgba(119, 124, 124, 0.3);
    --color-card-border: rgba(119, 124, 124, 0.2);
    --color-card-border-inner: rgba(119, 124, 124, 0.15);
    --color-secondary: rgba(119, 124, 124, 0.15);
    --color-secondary-hover: rgba(119, 124, 124, 0.25);
    --color-secondary-active: rgba(119, 124, 124, 0.3);
    --color-select-caret: rgba(245, 245, 245, 0.8);
  }

  /* Select dropdown para dark mode */
  select.form-control {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  }
}

/* Pie de página */
.app-footer {
  margin-top: 4rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border-color);
  background: linear-gradient(135deg, var(--card-bg) 0%, rgba(31, 184, 205, 0.02) 100%);
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.footer-content p {
  margin: 0 0 1rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.github-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
}

.github-link:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.github-repo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  transition: all 0.3s ease;
}

.github-repo:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
  background: rgba(31, 184, 205, 0.05);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(31, 184, 205, 0.1);
}

/* Tabs System */
.tabs-container {
  width: 100%;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 2rem;
  overflow-x: auto;
  /* Scroll horizontal móvil */
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

.tabs {
  display: flex;
  gap: 1.5rem;
}

.tab-btn {
  padding: 1rem 0.5rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: all 0.3s ease;
  font-size: 1rem;
}

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

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

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
}

.tab-content {
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

.tab-content.active {
  display: block;
  opacity: 1;
}

.transition-fade {
  animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }

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

/* Compact Input Group */
.input-group-compact {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.input-group-compact input {
  flex: 1;
  min-width: 80px;
}

.input-group-compact select {
  flex: 1;
  min-width: 100px;
}

@media (max-width: 640px) {
  .input-group-compact {
    flex-direction: column;
    gap: 0.5rem;
  }

  .input-group-compact input,
  .input-group-compact select {
    width: 100%;
  }
}

.hidden {
  display: none !important;
}

/* Responsive para el footer */
@media (max-width: 768px) {
  .app-footer {
    margin-top: 2rem;
    padding: 1.5rem 0;
  }

  .footer-content p {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
  }

  .github-repo {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
  }
}

/* --- UI Redesign Refactor (v1.1.0) --- */

/* Main 3-column Layout for Desktop */
.main-config-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 1024px) {
  .main-config-grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
  }
}

/* Charts 2-column Layout */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .charts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Simplified Footer */
.app-footer-simple {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border-color);
  margin-top: 4rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  background: linear-gradient(135deg, var(--card-bg) 0%, rgba(31, 184, 205, 0.02) 100%);
}

.app-footer-simple a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

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

/* Pagination Controls */
.pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.page-info {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Mobile Adjustments */
@media (max-width: 640px) {
  .wrap-mobile {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .wrap-mobile h2 {
    display: block;
    width: 100%;
    margin-bottom: 0.5rem;
  }

  .wrap-mobile .btn {
    width: 100%;
    display: flex;
    justify-content: center;
  }
}