@tailwind base;
@tailwind components;
@tailwind utilities;

/* ============================================
   APP MONEY - SISTEMA DE DISEÑO RESPONSIVE
   Mobile First | Accesible | Consistente
   
   ESTRUCTURA:
   @layer base   → Reset, variables, estilos globales
   @layer components → Clases reutilizables (.btn-*, .input-*, etc)
   @layer utilities → Utilidades puntuales
   ============================================ */

@layer base {
  /* === VARIABLES CSS === */
  :root {
    /* Colores principales */
    --bg-primary: #121b33;
    --surface: #1e3359;
    --surface-muted: #1e3359;
    --surface-contrast: #284878;
    --text-main: #ffffff;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-2: #10b981;
    --warn: #ef4444;
    --border-subtle: rgba(148, 163, 184, 0.12);
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.25);
    --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.3);
    
    /* Tipografía fluida */
    --font-size-xs: clamp(0.65rem, 0.6rem + 0.25vw, 0.75rem);
    --font-size-sm: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --font-size-base: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --font-size-lg: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --font-size-xl: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
    --font-size-2xl: clamp(1.25rem, 1rem + 1.25vw, 1.5rem);
    --font-size-3xl: clamp(1.5rem, 1rem + 2.5vw, 1.875rem);
    --font-size-4xl: clamp(1.75rem, 1rem + 3.75vw, 2.25rem);
    
    /* Espaciado fluido */
    --spacing-xs: clamp(0.25rem, 0.2rem + 0.25vw, 0.5rem);
    --spacing-sm: clamp(0.5rem, 0.4rem + 0.5vw, 0.75rem);
    --spacing-md: clamp(0.75rem, 0.6rem + 0.75vw, 1rem);
    --spacing-lg: clamp(1rem, 0.8rem + 1vw, 1.5rem);
    --spacing-xl: clamp(1.5rem, 1rem + 2.5vw, 2.5rem);
    --spacing-2xl: clamp(2rem, 1rem + 5vw, 3rem);
    
    /* Border radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transiciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index scale */
    --z-dropdown: 1000;
    --z-sticky: 500;
    --z-fixed: 1001;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-toast: 1090;
  }

  /* === RESET Y BASE === */
  * {
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }
  
  html {
    height: 100%;
    overflow-y: auto;
  }

  body {
    font-family: 'Plus Jakarta Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    overflow-y: auto;
    min-height: 100%;
  }

  body.auth-page {
    overflow: hidden;
    height: 100%;
  }

  body {
    font-family: 'Plus Jakarta Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-primary);
  }

  /* === TIPOGRAFÍA === */
  h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0;
  }
  
  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); }
  
  p { margin: 0; }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  /* === FOCUS STATES (Accesibilidad) === */
  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
  }
  
  *:focus {
    outline: none;
  }

  /* === SCROLLBAR PERSONALIZADA === */
  ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  
  ::-webkit-scrollbar-track {
    background: transparent;
  }
  
  ::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.2);
    border-radius: var(--radius-full);
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.4);
  }

  /* === IMÁGENES Y MULTIMEDIA === */
  img, video, svg {
    max-width: 100%;
    height: auto;
    display: block;
  }
  
  picture {
    display: block;
  }

  /* === ANIMACIONES === */
  @keyframes slideInUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  
  @keyframes modalSlideIn {
    from {
      opacity: 0;
      transform: scale(0.95) translateY(-10px);
    }
    to {
      opacity: 1;
      transform: scale(1) translateY(0);
    }
  }

  @keyframes drawerSlideIn {
    from {
      transform: translateX(-100%);
      opacity: 0.6;
    }
    to {
      transform: translateX(0);
      opacity: 1;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }
}

@layer components {
  /* === BACKGROUND === */
  .page-background {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: var(--bg-primary);
    pointer-events: none;
  }

  /* === PAGE STRUCTURE === */
  main {
    animation: fadeIn 0.3s ease-out;
    /* Mobile first padding — sin bottom excesivo */
    padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-xl);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }

  @media (min-width: 640px) {
    main {
      padding: var(--spacing-md) var(--spacing-md) var(--spacing-xl);
    }
  }

  @media (min-width: 768px) {
    main {
      padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-2xl);
    }
  }

  @media (min-width: 1024px) {
    main {
      padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-2xl);
    }
  }

  @media (min-width: 1280px) {
    main {
      padding: clamp(2rem, 4vw, 3rem) clamp(2rem, 6vw, 4rem) var(--spacing-2xl);
    }
  }

  /* === CARDS === */
  .fluent-card,
  .form-card,
  .panel-surface {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft);
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    padding: var(--spacing-md);
    animation: slideInUp 0.5s ease-out;
  }

  @media (min-width: 768px) {
    .fluent-card,
    .form-card,
    .panel-surface {
      padding: var(--spacing-lg);
    }
  }

  @media (min-width: 1024px) {
    .fluent-card,
    .form-card,
    .panel-surface {
      padding: var(--spacing-xl);
    }
  }

  /* === PAGE TITLE === */
  .page-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--text-main);
  }

  /* === FORM LABELS === */
  .form-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #d4dce9;
    margin-bottom: var(--spacing-xs);
  }

  /* === INPUTS === */
  .input-glass {
    box-sizing: border-box;
    width: 100%;
    min-height: clamp(40px, 10vw, 48px);
    padding: clamp(8px, 1.5vw, 12px) clamp(12px, 2vw, 16px);
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: 1.4;
    color: var(--text-main);
    background: var(--surface-muted);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    appearance: none;
    -webkit-appearance: none;
  }
  
  .input-glass::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
  }
  
  .input-glass:hover:not(:focus) {
    background: var(--surface-contrast);
    border-color: rgba(59, 130, 246, 0.3);
  }
  
  .input-glass:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    background: var(--surface-contrast);
  }
  
  .input-glass:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--surface-muted);
  }

  /* Input validation states */
  .input-glass.error {
    border-color: var(--warn);
    background: rgba(239, 68, 68, 0.05);
  }

  .input-glass.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
    border-color: var(--warn);
  }

  /* Input Number - Ocultar spinbox */
  input[type="number"].input-glass {
    padding-right: clamp(12px, 2vw, 16px);
  }
  
  input[type="number"].input-glass::-webkit-outer-spin-button,
  input[type="number"].input-glass::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
  }
  
  input[type="number"].input-glass[type="number"] {
    appearance: textfield;
    -moz-appearance: textfield;
  }

  /* Date/Month inputs */
  input[type="date"]::-webkit-calendar-picker-indicator,
  input[type="month"]::-webkit-calendar-picker-indicator {
    filter: invert(1) brightness(1) saturate(0);
    cursor: pointer;
  }
  
  input[type="date"]::-webkit-datetime-edit-year-field,
  input[type="date"]::-webkit-datetime-edit-month-field,
  input[type="date"]::-webkit-datetime-edit-day-field,
  input[type="month"]::-webkit-datetime-edit-year-field,
  input[type="month"]::-webkit-datetime-edit-month-field {
    color: #fff;
  }

  /* File input */
  input[type="file"].input-glass {
    cursor: pointer;
    padding: clamp(8px, 1.5vw, 12px) clamp(12px, 2vw, 16px);
  }
  
  input[type="file"].input-glass::file-selector-button {
    background: var(--accent);
    color: white;
    border: none;
    padding: clamp(6px, 1vw, 8px) clamp(12px, 2vw, 16px);
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    margin-right: clamp(8px, 1vw, 12px);
    transition: background var(--transition-fast);
    font-size: inherit;
  }
  
  input[type="file"].input-glass::file-selector-button:hover {
    background: #2563eb;
  }

  /* Color input */
  input[type="color"].input-glass {
    padding: 4px;
    height: clamp(40px, 10vw, 48px);
    min-height: clamp(40px, 10vw, 48px);
    cursor: pointer;
  }

  /* === SELECT === */
   select.input-glass {
     height: clamp(40px, 10vw, 48px);
     min-height: clamp(40px, 10vw, 48px);
     padding: clamp(8px, 1.5vw, 12px) clamp(36px, 5vw, 44px) clamp(8px, 1.5vw, 12px) clamp(12px, 2vw, 16px);
     line-height: 1.3;
     cursor: pointer;
     background-color: var(--surface-muted);
     background-image: url("data:image/svg+xml;charset=utf-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e8eef7' 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");
     background-repeat: no-repeat;
     background-position: right clamp(8px, 1.5vw, 12px) center;
     background-size: 18px;
     font-size: var(--font-size-base);
     appearance: none;
     -webkit-appearance: none;
   }

   select.input-glass[size] {
     height: auto;
     max-height: 200px;
     overflow-y: auto;
     appearance: none;
   }

   .select-wrapper {
     position: relative;
     width: 100%;
   }

   .select-wrapper select {
     width: 100%;
     appearance: none;
     -webkit-appearance: none;
     background-image: url("data:image/svg+xml;charset=utf-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e8eef7' 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");
     background-repeat: no-repeat;
     background-position: right clamp(8px, 1.5vw, 12px) center;
     background-size: 18px;
     padding-right: clamp(36px, 5vw, 44px);
   }

   .select-dropdown {
     position: absolute;
     top: 100%;
     left: 0;
     right: 0;
     z-index: var(--z-dropdown);
     background: var(--surface);
     border: 1px solid var(--border-subtle);
     border-radius: var(--radius-md);
     box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
     max-height: 200px;
     overflow-y: auto;
     display: none;
   }

   .select-dropdown.open {
     display: block;
   }

   .select-dropdown-option {
     padding: clamp(8px, 1.5vw, 12px) clamp(12px, 2vw, 16px);
     font-size: var(--font-size-base);
     color: var(--text-main);
     cursor: pointer;
     transition: background var(--transition-fast);
     min-height: 44px;
     display: flex;
     align-items: center;
   }

   .select-dropdown-option:hover,
   .select-dropdown-option:focus {
     background: rgba(59, 130, 246, 0.1);
     color: var(--accent);
   }

   .select-dropdown-option.selected {
     background: rgba(59, 130, 246, 0.15);
     color: var(--accent);
   }
  
  select.input-glass option {
    background-color: var(--surface);
    color: var(--text-main);
    padding: clamp(6px, 1vw, 8px);
  }
  
  select.input-glass:hover:not(:focus) {
    background-color: var(--surface-contrast);
  }

  select.input-glass:focus {
    outline: none;
    border-color: var(--accent);
    background-color: var(--surface-contrast);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
  }

   /* === BUTTONS === */
   .btn-fluent,
   .btn-action {
     display: inline-flex;
     align-items: center;
     justify-content: center;
     gap: clamp(4px, 0.5vw, 6px);
     padding: clamp(8px, 1vw, 10px) clamp(12px, 1.5vw, 16px);
     font-size: var(--font-size-sm);
     font-weight: 700;
     font-family: inherit;
     text-transform: uppercase;
     letter-spacing: 0.05em;
     white-space: nowrap;
     border-radius: var(--radius-md);
     border: 1px solid transparent;
     cursor: pointer;
     transition: all var(--transition-normal);
     text-decoration: none;
     min-height: 40px;
     width: fit-content;
     flex-shrink: 0;
   }
  
  .btn-fluent {
    background: var(--accent);
    color: #ffffff;
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: var(--shadow-card);
  }
  
  .btn-fluent:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.35);
  }
  
  .btn-fluent:active {
    transform: translateY(0);
  }
  
  .btn-fluent:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  
  .btn-fluent:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
  }
  
  .btn-action {
    background: var(--surface-muted);
    border-color: var(--border-subtle);
    color: var(--text-main);
  }
  
  .btn-action:hover {
    background: var(--surface-contrast);
    border-color: var(--accent);
    color: var(--accent);
  }

  .btn-action:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  
  /* Button variants */
  .btn-fluent.btn-red {
    background: var(--warn);
    border-color: rgba(239, 68, 68, 0.3);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
  }
  
  .btn-fluent.btn-red:hover {
    background: #dc2626;
    box-shadow: 0 6px 16px rgba(239, 68, 68, 0.35);
  }
  
  .btn-fluent.btn-green {
    background: var(--accent-2);
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
  }
  
  .btn-fluent.btn-green:hover {
    background: #059669;
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.35);
  }

  /* === NAVBAR === */
  .navbar-custom {
    position: sticky;
    top: 0;
    z-index: var(--z-fixed);
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    /* NOTA: NO usar backdrop-filter aquí — crea un containing block
       para position:fixed que rompe el drawer del menú móvil */
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-card);
    min-height: 60px;
  }

  @media (min-width: 640px) {
    .navbar-custom {
      padding: var(--spacing-sm) var(--spacing-lg);
    }
  }

  @media (min-width: 1024px) {
    .navbar-custom {
      padding: var(--spacing-md) var(--spacing-lg);
      gap: var(--spacing-md);
    }
  }

  @media (min-width: 1280px) {
    .navbar-custom {
      padding: var(--spacing-md) var(--spacing-xl);
    }
  }

  /* === MOBILE NAV DRAWER === */
  /* El menú en móvil es un drawer lateral fijo desde la izquierda */
  .nav-links {
    /* Oculto por defecto en móvil — drawer lateral */
    display: none;
    position: fixed;
    top: 60px;           /* justo bajo la navbar */
    left: 0;
    bottom: 0;
    width: min(280px, 85vw);
    z-index: var(--z-fixed);
    background: var(--bg-primary);
    border-right: 1px solid var(--border-subtle);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--spacing-md) var(--spacing-sm);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-100%);
  }

  .nav-links.show {
    display: flex;
    transform: translateX(0);
    animation: drawerSlideIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  }

  /* En escritorio: inline dentro del navbar */
  @media (min-width: 1024px) {
    .nav-links {
      display: flex !important;
      position: static;
      top: auto;
      left: auto;
      bottom: auto;
      width: auto;
      max-width: none;
      height: auto;
      background: transparent;
      border-right: none;
      box-shadow: none;
      flex-direction: row;
      align-items: center;
      gap: clamp(4px, 1vw, 8px);
      padding: 0;
      overflow: visible;
      transform: none;
      z-index: auto;
      animation: none;
    }
  }


  .nav-links::-webkit-scrollbar {
    width: 4px;
  }

  .nav-links::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.2);
    border-radius: 2px;
  }
  
  .nav-item {
    display: flex;
    align-items: center;
    gap: clamp(4px, 1vw, 8px);
    padding: clamp(10px, 1.5vw, 12px) clamp(12px, 2vw, 16px);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
    flex-shrink: 0;
    min-height: 44px;    /* touch target mínimo recomendado */
    width: 100%;         /* en drawer ocupa todo el ancho */
  }

  /* En escritorio los items son compactos y no full-width */
  @media (min-width: 1024px) {
    .nav-item {
      width: auto;
      padding: clamp(6px, 1vw, 8px) clamp(10px, 2vw, 14px);
    }
  }
  
  .nav-item:hover {
    color: var(--accent);
    background: rgba(59, 130, 246, 0.1);
  }
  
  .nav-item:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
  }

  .nav-item[aria-current="page"] {
    color: var(--accent);
    background: rgba(59, 130, 246, 0.15);
  }

  /* === DROPDOWN === */
  .dropdown {
    position: relative;
    display: inline-block;
  }
  
  .dropdown-content {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: var(--z-dropdown);
    display: none;
    min-width: clamp(180px, 80vw, 280px);
    padding: var(--spacing-xs) 0;
    background: var(--surface);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  }
  
  .dropdown-content.show {
    display: block !important;
  }
  
  .dropdown-item {
    display: flex;
    align-items: center;
    gap: clamp(8px, 2vw, 12px);
    padding: clamp(10px, 2vw, 12px) clamp(16px, 3vw, 20px);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    text-decoration: none;
    min-height: 44px;
    cursor: pointer;
  }
  
  .dropdown-item:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent);
  }

  .dropdown-item:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
  }
  
  .dropdown-item.text-red-500:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
  }
  
  .dropdown-item i {
    width: 16px;
    opacity: 0.7;
  }

  /* === BADGES === */
  .cat-badge {
    display: inline-block;
    padding: clamp(4px, 1vw, 6px) clamp(8px, 1.5vw, 12px);
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--text-main);
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    white-space: nowrap;
  }
  
  .cat-badge--colored {
    color: var(--text-main) !important;
    border-color: var(--cat-border);
    background: transparent;
  }
  
  .cat-badge--default {
    color: var(--text-main);
    background: transparent;
    border-color: var(--border-subtle);
  }

  /* === MODALS === */
  .modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal-backdrop);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
  }
  
  .modal-overlay.show {
    display: flex !important;
  }
  
  .modal-content {
    position: relative;
    z-index: var(--z-modal);
    width: 100%;
    max-width: min(95vw, 500px);
    max-height: 90vh;
    overflow-y: auto;
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    animation: modalSlideIn 0.3s ease-out;
    padding: var(--spacing-lg);
  }

  @media (max-width: 480px) {
    .modal-content {
      max-height: 95vh;
      padding: var(--spacing-md);
    }
  }

  /* === TABLES === */
  .table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
  }
  
  .table-base {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
  }
  
  .table-header {
    background: var(--surface-contrast);
    border-bottom: 1px solid var(--border-subtle);
  }
  
  .table-header th {
    padding: clamp(12px, 2vw, 16px);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #d4dce9;
    text-align: left;
    min-height: 44px;
  }
  
  .table-row {
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition-fast);
  }
  
  .table-row:last-child {
    border-bottom: none;
  }
  
  .table-row:hover {
    background: var(--surface-contrast);
  }
  
  .table-row td {
    padding: clamp(12px, 2vw, 16px);
    vertical-align: middle;
  }

  /* Mobile stack table */
  @media (max-width: 767px) {
    .mobile-stack-table thead {
      display: none;
    }
    
    .mobile-stack-table,
    .mobile-stack-table tbody,
    .mobile-stack-table tr,
    .mobile-stack-table td {
      display: block;
      width: 100%;
    }
    
    .mobile-stack-table tr {
      padding: var(--spacing-md) 0;
      border-bottom: 1px solid var(--border-subtle);
      margin-bottom: var(--spacing-xs);
    }
    
    .mobile-stack-table tr:last-child {
      border-bottom: none;
    }
    
    .mobile-stack-table td {
      padding: var(--spacing-sm) var(--spacing-md);
      text-align: left !important;
      border: none;
    }
    
    .mobile-stack-table td::before {
      content: attr(data-label);
      display: block;
      margin-bottom: var(--spacing-xs);
      font-size: var(--font-size-xs);
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: #b8c5e0;
    }
    
    .mobile-stack-table td.actions-cell {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: var(--spacing-sm);
      padding-top: var(--spacing-md);
    }
    
    .mobile-stack-table td.actions-cell::before {
      display: none;
    }
  }

  /* === PROGRESS BAR === */
  .progress-bar {
    height: 8px;
    background: rgba(148, 163, 184, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
  }
  
  .progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    min-width: 4px;
  }

  /* === ACTION BUTTONS === */
  .action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: clamp(6px, 1vw, 10px);
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    min-height: 44px;
    min-width: 44px;
  }
  
  .action-btn:hover {
    background: var(--surface-contrast);
  }

  .action-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  
  .action-btn.edit-btn {
    color: #60a5fa;
  }
  
  .action-btn.delete-btn {
    color: #ff6b6b;
  }

  /* === TOAST CONTAINER === */
  #toastContainer {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-end;
    pointer-events: none;
  }
  
  #toastContainer > * {
    pointer-events: auto;
  }

  /* === FORM GROUPS === */
  .form-group {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
  }

   .form-actions {
     display: flex;
     flex-direction: row;
     flex-wrap: wrap;
     gap: var(--spacing-sm);
     width: 100%;
     margin-top: var(--spacing-lg);
     justify-content: center;
     align-items: center;
   }

  /* Botones dentro de form-actions: adaptativos por defecto */
  .form-actions .btn-fluent,
  .form-actions .btn-action {
    width: auto;
    /* Permitir que los botones crezcan juntos pero no solos */
    flex-shrink: 0;
  }

  /* En pantallas muy pequeñas: apilar en columna y botones centrados con ancho ajustado */
  @media (max-width: 479px) {
    .form-actions {
      flex-direction: column;
      align-items: center;
    }
    .form-actions .btn-fluent,
    .form-actions .btn-action {
      width: auto;
      max-width: 100%;
    }
    .form-actions.flex-nowrap {
      flex-direction: row;
      flex-wrap: nowrap;
      justify-content: center;
    }
  }

  /* === MODALES - Mejorar botones en modales === */
  .modal-content .form-actions,
  .modal-content .flex.flex-col.sm\\:flex-row {
    flex-wrap: wrap;
    justify-content: center;
  }

  /* En modales en móvil: botones apilados */
  @media (max-width: 639px) {
    .modal-content .form-actions,
    .modal-content .flex.flex-col.sm\\:flex-row {
      flex-direction: column;
    }
    .modal-content .btn-fluent,
    .modal-content .btn-action {
      width: 100%;
    }
  }

  /* Clase helper para divs de botones en modales */
  .modal-buttons {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    gap: var(--spacing-sm) !important;
    width: 100% !important;
    justify-content: center !important;
    align-items: center !important;
  }

  .modal-buttons .btn-fluent,
  .modal-buttons .btn-action {
    width: auto !important;
    flex-shrink: 0 !important;
  }

  @media (max-width: 639px) {
    .modal-buttons {
      flex-direction: column !important;
    }
    .modal-buttons .btn-fluent,
    .modal-buttons .btn-action {
      width: 100% !important;
    }
  }

  /* === ACCESSIBILITY === */
  .skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 100;
    font-weight: 600;
    transition: top 0.2s ease;
  }
  .skip-link:focus {
    top: 0;
  }

  /* === MOBILE MENU TOGGLE === */
  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    min-width: 40px;     /* evita que se comprima en flex */
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
    flex-shrink: 0;
    /* Asegura que el botón siempre esté encima del overlay */
    position: relative;
    z-index: var(--z-fixed);
  }
  .mobile-menu-toggle:hover {
    background: var(--surface-contrast);
    border-color: var(--accent);
    color: var(--accent);
  }
  .mobile-menu-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  /* Ocultar en escritorio */
  @media (min-width: 1024px) {
    .mobile-menu-toggle {
      display: none;
    }
  }

  /* === MOBILE MENU OVERLAY === */
  /* El overlay va DETRÁS del drawer y del navbar (z-index 900 < 1001) */
  /* NO usar backdrop-filter aquí: crea un stacking context que esconde el drawer */
  .mobile-menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 900;  /* debajo del navbar (1001) y del drawer (1001) */
    transition: opacity var(--transition-normal);
  }
  .mobile-menu-overlay.show {
    display: block;
    animation: fadeIn 0.2s ease-out;
  }

  /* === RESPONSIVE AVATARS === */
  .avatar-responsive {
    width: clamp(32px, 8vw, 128px);
    height: clamp(32px, 8vw, 128px);
    border-radius: 50%;
    object-fit: cover;
    display: block;
  }
  .avatar-sm {
    width: clamp(24px, 6vw, 64px);
    height: clamp(24px, 6vw, 64px);
  }
  .avatar-lg {
    width: clamp(48px, 12vw, 160px);
    height: clamp(48px, 12vw, 160px);
  }

  /* === SUMMARY CARD & GRIDS === */
  .summary-card {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    min-height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-soft);
    transition: border-color var(--transition-normal);
  }
  .summary-card.income { border-color: rgba(16, 185, 129, 0.2); }
  .summary-card.expense { border-color: rgba(239, 68, 68, 0.2); }
  .summary-card.investment { border-color: rgba(168, 85, 247, 0.2); }
  .summary-card.balance { border-color: rgba(249, 115, 22, 0.2); }
  .summary-card.count { border-color: var(--border-subtle); }
  
  .summary-label {
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
  }
  .summary-value {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--text-main);
  }

  .summary-cards-grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: 1fr;
  }
  @media (min-width: 480px) {
    .summary-cards-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  @media (min-width: 768px) {
    .summary-cards-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }
  @media (min-width: 1024px) {
    .summary-cards-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }
  @media (min-width: 1280px) {
    .summary-cards-grid {
      grid-template-columns: repeat(5, 1fr);
    }
  }

  /* === PERIOD CHIPS === */
  .period-chip {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    background: var(--surface-contrast);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
  }
  .period-chip:hover, .period-chip.active {
    background: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.4);
    color: var(--text-main);
  }

  /* === TIPO BADGES === */
  .tipo-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
  }
  .tipo-badge.ingreso { background: rgba(16, 185, 129, 0.15); color: #34d399; }
  .tipo-badge.gasto { background: rgba(239, 68, 68, 0.15); color: #f87171; }
  .tipo-badge.inversion { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }

  /* === CHART COMPONENTS === */
  .chart-card {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
  }
  @media (min-width: 768px) {
    .chart-card {
      padding: var(--spacing-lg);
    }
  }
  .chart-container {
    position: relative;
    width: 100%;
    height: clamp(180px, 20vw + 100px, 280px);
  }
  .chart-container canvas {
    max-width: 100%;
    height: 100% !important;
  }

  /* === TRANSACTION ROWS === */
  .transaction-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-subtle);
    transition: all var(--transition-fast);
  }
  .transaction-row:last-child {
    border-bottom: none;
  }
  .transaction-row:hover {
    background: rgba(59, 130, 246, 0.05);
    padding-left: var(--spacing-xs);
  }
  .transaction-date {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    min-width: 70px;
    flex-shrink: 0;
  }
  .transaction-desc {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-main);
    margin: 0 var(--spacing-sm);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .transaction-amount {
    font-size: var(--font-size-sm);
    font-weight: 700;
    min-width: 100px;
    text-align: right;
    flex-shrink: 0;
  }
  .transaction-amount.positive {
    color: #10b981;
  }
  .transaction-amount.negative {
    color: #ef4444;
  }

  /* === TITLE SECTIONS === */
  .title-section {
    margin-bottom: var(--spacing-lg);
    text-align: center;
  }
  .title-section h1 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0;
    color: var(--text-main);
  }
  .title-section p {
    opacity: 0.6;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
  }
}

@layer utilities {
  /* === UTILIDADES RESPONSIVE === */
  
  /* Contenedor fluido */
  .container-fluid {
    width: 100%;
    max-width: 1440px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  
  /* Texto truncado */
  .text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  /* Scroll horizontal seguro */
  .scroll-x-safe {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  
  /* Ocultar visualmente pero mantener accesible */
  .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;
  }
  
  .sr-only-focusable:focus,
  .sr-only-focusable:focus-within {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
     white-space: normal;
   }
}

/* LG breakpoint responsive utilities */
@media (min-width: 1024px) {
  .lg\:flex {
    display: flex;
  }
  .lg\:flex-row {
    flex-direction: row;
  }
  .lg\:flex-col {
    flex-direction: column;
  }
  .lg\:hidden {
    display: none;
  }
  .lg\:justify-center {
    justify-content: center;
  }
  .lg\:items-end {
    align-items: flex-end;
  }
  .lg\:items-center {
    align-items: center;
  }
  .lg\:gap-3 {
    gap: 0.75rem;
  }
  .lg\:gap-4 {
    gap: 1rem;
  }
  .lg\:mb-0 {
    margin-bottom: 0;
  }
}

/* === MEDIA QUERIES - MOBILE FIRST === */

/* Tablets (640px+) */
@media (min-width: 640px) {
  .grid-responsive {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
  
  .form-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

/* Tablets (768px+) */
@media (min-width: 768px) {
  .grid-2-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Laptops (1024px+) */
@media (min-width: 1024px) {
  .grid-2-col {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-3-col {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid-4-col {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Desktop (1280px+) */
@media (min-width: 1280px) {
  .grid-3-col {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid-4-col {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .grid-5-col {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* === PRINT STYLES === */
@media print {
  .navbar-custom,
  #toastContainer,
  .modal-overlay,
  .mobile-menu-toggle,
  .mobile-menu-overlay {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .fluent-card,
  .form-card,
  .panel-surface {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  a {
    color: black;
  }
}