body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
  color: #333;
  line-height: 1.6;
  overflow-x: hidden;
}

html {
  overflow-x: hidden;
}

main {
  max-width: 100%;
  overflow-x: hidden;
}

/* ========== LOGIN PAGE STYLES ========== */
.login-page {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.login-background {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url('../img/pexels-camcasey-2007139.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  position: relative;
  overflow: hidden;
  filter: brightness(1.1) contrast(1.05);
}

.login-background::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.15);
  z-index: 0;
}

.login-card {
  background: transparent;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 48px 40px;
  width: 90%;
  max-width: 420px;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  z-index: 1;
  animation: cardSlideIn 0.6s ease-out;
}

@keyframes cardSlideIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-title {
  color: #ffffff;
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 32px 0;
  text-align: center;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.input-group {
  margin-bottom: 24px;
}

.input-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.95);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.input-group label svg {
  opacity: 0.9;
}

.input-group input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #ffffff;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-sizing: border-box;
  box-shadow: 
    inset 0 1px 3px rgba(0, 0, 0, 0.1),
    0 1px 2px rgba(255, 255, 255, 0.1);
}

.input-group input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.input-group input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 
    0 0 0 3px rgba(255, 255, 255, 0.1),
    inset 0 1px 3px rgba(0, 0, 0, 0.1),
    0 2px 8px rgba(255, 255, 255, 0.15);
}

.password-wrapper {
  position: relative;
}

.password-wrapper input {
  padding-right: 48px;
}

.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s;
}

.toggle-password:hover {
  color: rgba(255, 255, 255, 1);
  background: transparent;
  transform: translateY(-50%);
}

.login-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  font-size: 0.875rem;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  user-select: none;
}

.remember-me input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: rgba(255, 255, 255, 0.8);
}

.forgot-password {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color 0.2s;
  font-weight: 500;
}

.forgot-password:hover {
  color: #ffffff;
  text-decoration: underline;
}

.login-button {
  width: 100%;
  padding: 14px;
  background: rgba(255, 255, 255, 0.9);
  color: #1a5f7a;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.login-button:hover {
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.login-button:active {
  transform: translateY(0);
}

#loginMessage {
  margin-top: 16px;
  text-align: center;
  font-size: 0.9rem;
}
/* ========== END LOGIN PAGE STYLES ========== */

/* ========== HEADER ========== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: #1a1a1a;
  color: #fff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  position: relative;
}

header h1 {
  margin: 0;
  font-size: 1.8rem;
  flex: 0 0 auto;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color 0.3s;
}

.menu-toggle:hover {
  background-color: #444;
}

.menu-toggle .material-icons {
  font-size: 28px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.main-nav a {
  color: #fff;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: background-color 0.3s;
  white-space: nowrap;
}

.main-nav a:hover {
  background-color: #444;
}

.main-nav a.active {
  background-color: #444;
  font-weight: bold;
}

header #logoutBtn {
  background: #dc3545;
  white-space: nowrap;
  margin-left: 1rem;
}

header #logoutBtn:hover {
  background: #c82333;
}

/* Controles - Estilos base */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  background: #f8f9fa;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.controls-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
}

.controls button {
  white-space: nowrap;
  font-size: 0.95rem;
  padding: 10px 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.controls button .material-icons {
  font-size: 20px;
  line-height: 1;
}

button {
  padding: 8px 16px;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  background: #4a90e2;
  color: white;
  font-weight: 500;
  transition: background-color 0.2s, transform 0.1s;
}

button:hover {
  background: #357abd;
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

.table-wrapper {
  width: 100%;
  padding: 0;
  margin: 0 auto;
}

.table-container {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  border-collapse: collapse;
  width: 100%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

/* ========== TABLA: ESTRUCTURA Y STICKY ========== */

/* THEAD STICKY - Se pega al top al hacer scroll */


thead th {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 100;
  background: #2c3e50 !important;
  color: white !important;
  font-weight: 600;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Primera columna del thead - sticky horizontal + vertical */
thead th:first-child {
  position: sticky;
  left: 0;
  top: 0;
  z-index: 101;
  background: #2c3e50 !important;
  box-shadow: 2px 2px 4px rgba(0,0,0,0.15);
}

/* ========== CELDAS GENERALES ========== */

th, td {
  border: 1px solid #e0e0e0;
  padding: 12px;
  text-align: center;
  vertical-align: middle;
  position: relative;
}

/* ========== TBODY: PRIMERA COLUMNA STICKY HORIZONTAL ========== */

tbody td:first-child {
  position: sticky;
  left: 0;
  z-index: 10;
  background: #fff;
  font-weight: 500;
  text-align: left;
  box-shadow: 2px 0 4px rgba(0,0,0,0.1);
}

tbody th {
  position: sticky;
  left: 0;
  z-index: 10;
  background: #2c3e50;
  color: white;
  font-weight: 600;
  box-shadow: 2px 0 4px rgba(0,0,0,0.1);
}

tbody th.section-title {
  z-index: 101;
}

/* Row para títulos de sección */
.section-title-row {
  position: relative;
}

/* Títulos de sección en tbody - mismo comportamiento que thead th:first-child */
tbody th.section-title-header {
  position: -webkit-sticky !important;
  position: sticky !important;
  left: 0 !important;
  z-index: 101 !important;
  background: #2c3e50 !important;
  color: white !important;
  font-weight: 600 !important;
  box-shadow: 2px 0 4px rgba(0,0,0,0.15) !important;
  text-align: left !important;
  font-size: 1.1em !important;
  padding: 12px 16px !important;
  min-width: 200px !important;
  max-width: 250px !important;
  white-space: normal !important;
  word-wrap: break-word !important;
}

textarea {
  width: 100%;
  resize: vertical;
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  min-height: 60px;
  transition: border-color 0.2s;
}

textarea:focus {
  outline: none;
  border-color: #4a90e2;
  box-shadow: 0 0 0 2px rgba(74,144,226,0.2);
}

.section-title {
  background: #2c3e50 !important;
  color: white !important;
  text-align: left;
  font-size: 1.1em;
  padding: 12px 16px;
  position: sticky !important;
  left: 0 !important;
  z-index: 101 !important;
  box-shadow: 2px 0 4px rgba(0,0,0,0.1);
  min-width: 200px;
  max-width: 250px;
  white-space: normal;
  word-wrap: break-word;
}

.section-title-row {
  position: relative;
}

.section-title-row .section-title {
  position: sticky !important;
  left: 0 !important;
}

.section-title .encabezado-caracteristicas {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.section-title .encabezado-caracteristicas span {
  font-weight: bold;
  color: white !important;
}

.section-title-header {
  background: #2c3e50 !important;
  color: white !important;
  text-align: left;
  font-size: 1.1em;
  padding: 12px 16px;
  font-weight: bold;
  position: sticky;
  left: 0;
  z-index: 101;
  box-shadow: 2px 0 4px rgba(0,0,0,0.1);
  min-width: 200px;
  max-width: 250px;
  white-space: normal;
  word-wrap: break-word;
}

.section-title-header .header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.section-title-header span {
  flex: 1;
  min-width: 120px;
}

/* Estilos unificados para todos los botones */
.btn-agregar-caracteristica,
.edit-product,
.delete-product,
.edit-name,
.delete-row,
.delete-col,
.reset-field {
  border: none;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 4px;
  transition: all 0.2s ease;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  min-width: 36px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Estilos para Material Icons dentro de botones */
.edit-product .material-icons,
.delete-product .material-icons,
.edit-name .material-icons,
.delete-row .material-icons,
.delete-col .material-icons,
.reset-field .material-icons {
  font-size: 18px;
  line-height: 1;
  pointer-events: none;
}

.btn-agregar-caracteristica {
  background: #28a745;
  color: white;
  padding: 6px 16px;
}

.btn-agregar-caracteristica:hover {
  background: #218838;
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.edit-product,
.edit-name {
  background: #17a2b8;
  color: white;
}

.edit-product:hover,
.edit-name:hover {
  background: #138496;
  transform: translateY(-1px);
}

.delete-product,
.delete-row,
.delete-col {
  background: #dc3545;
  color: white;
}

.delete-product:hover,
.delete-row:hover,
.delete-col:hover {
  background: #c82333;
  transform: translateY(-1px);
}

.reset-field {
  background: #dc3545;
  color: white;
  flex-shrink: 0;
  align-self: center;
}

.reset-field:hover {
  background: #c82333;
}

.field-container {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 200px;
  padding: 4px;
}

.field-container textarea {
  flex: 1;
  align-self: center;
}

/* Estilos específicos para contextos */
.section-title .delete-row {
  float: right;
  background: #ff9999;
}

.section-title .delete-row:hover {
  background: #ff6666;
}

/* ========== ESTILOS PARA CARACTERÍSTICAS Y ESPECIFICACIONES ========== */
.caracteristica-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px;
}

.caracteristica-titulo {
  font-weight: 600;
  color: #333;
  line-height: 1.4;
}

.caracteristica-botones {
  display: flex;
  gap: 6px;
  justify-content: flex-start;
  align-items: center;
}

.caracteristica-botones .edit-name,
.caracteristica-botones .delete-row {
  margin: 0;
}

/* Estilos para mensajes (toasts) */
.mensaje {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 24px;
  border-radius: 8px;
  color: #fff;
  z-index: 1000;
  max-width: 80%;
  word-wrap: break-word;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  animation: slideIn 0.3s ease-out;
  font-weight: 500;
}

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

.mensaje.success {
  background-color: #28a745;
  border-left: 4px solid #1e7e34;
}

.mensaje.error {
  background-color: #dc3545;
  border-left: 4px solid #bd2130;
}

.mensaje.info {
  background-color: #17a2b8;
  border-left: 4px solid #117a8b;
}

.mensaje.warning {
  background-color: #ffc107;
  color: #212529;
  border-left: 4px solid #d39e00;
}

/* Estilos para encabezados de productos */
.product-header,
.product-header-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: nowrap;
  padding: 4px;
}

.product-name,
.product-name-span {
  flex: 0 1 auto;
  min-width: 60px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: white;
  font-weight: 600;
  cursor: pointer;
}

.edit-product,
.delete-product {
  font-size: 0.9em;
}

/* Clase para mensajes de error en login */
.message.error {
  color: #dc3545;
  font-weight: 500;
}

/* ========== RESPONSIVE DESIGN ========== */

/* TABLET (≤ 768px) */
@media (max-width: 768px) {
  /* Login responsive */
  .login-background {
    background-attachment: scroll;
    padding: 20px;
  }

  .login-card {
    padding: 32px 24px;
    width: 100%;
    max-width: 100%;
    border-radius: 20px;
  }

  .login-title {
    font-size: 1.75rem;
    margin-bottom: 24px;
  }

  .input-group {
    margin-bottom: 20px;
  }

  .input-group label {
    font-size: 0.85rem;
  }

  .input-group input {
    padding: 12px 14px;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-user-select: text;
    user-select: text;
    touch-action: manipulation;
  }
  
  .input-group input:focus {
    font-size: 16px;
  }

  .password-wrapper input {
    padding-right: 44px;
  }

  .login-options {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 24px;
  }

  .login-button {
    padding: 12px;
    font-size: 1rem;
  }

  /* Header responsive - Menú móvil lateral */
  header {
    padding: 0.75rem;
    flex-wrap: nowrap;
  }

  header h1 {
    font-size: 1.4rem;
    order: 1;
  }

  .menu-toggle {
    display: flex;
    order: 2;
    z-index: 1001;
  }

  .main-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    background: #1a1a1a;
    flex-direction: column;
    padding: 2rem 0;
    margin: 0;
    border: none;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    transition: left 0.3s ease-in-out;
    z-index: 1000;
    overflow-y: auto;
  }

  .main-nav.active {
    left: 0;
  }

  .main-nav::before {
    content: 'MENÚ';
    display: block;
    padding: 0 1.5rem 1rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: #fff;
    border-bottom: 2px solid #444;
    margin-bottom: 1rem;
  }

  .main-nav ul {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }

  .main-nav li {
    width: 100%;
    border-bottom: 1px solid #333;
  }

  .main-nav a {
    display: block;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    width: 100%;
    text-align: left;
    border-radius: 0;
    transition: all 0.3s;
  }

  .main-nav a:hover {
    background-color: #333;
    padding-left: 2rem;
  }

  .main-nav a.active {
    background-color: #2a2a2a;
    border-left: 4px solid #4a90e2;
  }

  header #logoutBtn {
    width: calc(100% - 3rem);
    margin: 1.5rem 1.5rem 0;
    padding: 0.75rem;
    font-size: 1rem;
  }

  /* Overlay para cerrar menú al hacer clic fuera */
  .main-nav.active::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
  }

  /* Controles responsive - Agrupados sin desbordamiento */
  .controls {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 0.5rem;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .controls-group {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
  }
  
  .controls button {
    font-size: 0.85rem;
    padding: 8px 12px;
    flex: 0 1 auto;
    min-width: fit-content;
    max-width: 100%;
  }

  /* Tabla responsive */
  .field-container {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
  }

  .field-container textarea {
    width: 100%;
    max-width: 300px;
    margin-bottom: 4px;
    align-self: center;
  }

  .btn-agregar-caracteristica,
  .edit-product,
  .delete-product,
  .edit-name,
  .delete-row,
  .delete-col,
  .reset-field {
    padding: 8px 12px;
    font-size: 0.85rem;
    min-width: 32px;
    height: 36px;
  }
  
  .btn-agregar-caracteristica {
    padding: 8px 14px;
  }
  
  .section-title-header > div {
    flex-direction: row;
    gap: 8px;
  }
  
  .section-title-header span {
    font-size: 1rem;
  }
  
  th > div {
    flex-direction: row;
    gap: 4px;
    flex-wrap: nowrap;
  }
  
  th .product-name {
    font-size: 0.9rem;
    min-width: 50px;
  }

  textarea {
    min-height: 80px;
    font-size: 16px;
  }

  th, td {
    padding: 8px;
    font-size: 0.9em;
  }

  td {
    display: table-cell;
    vertical-align: middle;
  }

  td .field-container {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  th:first-child, td:first-child {
    min-width: 120px;
    max-width: 180px;
  }

  .mensaje {
    left: 20px;
    right: 20px;
    max-width: calc(100% - 40px);
  }
  
  /* Notificaciones responsive */
  .notification-container {
    top: 10px;
    right: 10px;
    left: 10px;
  }
  
  .notification {
    min-width: auto;
    max-width: none;
  }
}

/* MÓVIL (≤ 480px) */
@media (max-width: 480px) {
  /* Login móvil */
  .login-card {
    padding: 24px 20px;
  }

  .login-title {
    font-size: 1.5rem;
    margin-bottom: 20px;
  }

  .input-group input {
    padding: 10px 12px;
  }

  .login-button {
    padding: 11px;
    font-size: 0.95rem;
  }

  /* Header móvil */
  header h1 {
    font-size: 1.3rem;
  }

  .header-left {
    gap: 0.5rem;
  }

  .main-nav a {
    padding: 0.4rem 0.75rem;
    font-size: 0.9rem;
  }

  header #logoutBtn {
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
  }

  /* Controles móvil */
  .controls {
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.5rem 0.3rem;
  }
  
  .controls-group {
    width: 100%;
    justify-content: center;
  }
  
  .controls-group:first-child {
    flex-wrap: nowrap;
    gap: 0.25rem;
  }
  
  .controls-group:first-child button {
    flex: 1 1 0;
    font-size: 0.65rem;
    padding: 0.45rem 0.1rem;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
  }
  
  .controls-group:first-child button .material-icons {
    font-size: 16px;
  }
  
  .controls-group:last-child {
    flex-wrap: wrap;
    gap: 0.4rem;
  }
  
  .controls-group:last-child button {
    flex: 1;
    min-width: 90px;
    font-size: 0.65rem;
    padding: 0.5rem 0.3rem;
  }
  
  .controls button .material-icons {
    font-size: 14px;
  }

  /* Tabla móvil */
  th:first-child, td:first-child {
    min-width: 100px;
    max-width: 140px;
    font-size: 0.85em;
    padding: 6px;
  }
  
  .btn-agregar-caracteristica,
  .edit-product,
  .delete-product,
  .edit-name,
  .delete-row,
  .delete-col,
  .reset-field {
    padding: 6px 10px;
    font-size: 0.8rem;
    min-width: 30px;
    height: 32px;
  }
  
  .btn-agregar-caracteristica {
    padding: 6px 12px;
    font-size: 0.85rem;
  }
  
  .section-title-header span {
    font-size: 0.9rem;
  }
  
  th > div {
    gap: 3px;
  }
  
  th .product-name {
    font-size: 0.8rem;
    min-width: 40px;
  }
}

/* PANTALLAS MUY PEQUEÑAS (≤ 360px) */
@media (max-width: 360px) {
  .controls-group:first-child button {
    font-size: 0.6rem;
    padding: 0.4rem 0.05rem;
  }
  
  .controls-group:first-child button .material-icons {
    font-size: 14px;
  }
  
  .controls-group:last-child button {
    min-width: 80px;
    font-size: 0.6rem;
  }
}

/* ========== NOTIFICATION SYSTEM ========== */
.notification-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.notification {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  max-width: 450px;
  padding: 16px 20px;
  background: white;
  border-radius: 12px;
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.15),
    0 0 0 1px rgba(0, 0, 0, 0.05);
  pointer-events: auto;
  opacity: 0;
  transform: translateX(400px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.notification-show {
  opacity: 1;
  transform: translateX(0);
}

.notification-hide {
  opacity: 0;
  transform: translateX(400px) scale(0.9);
}

.notification-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: bold;
  border-radius: 50%;
}

.notification-text {
  flex: 1;
  font-size: 14px;
  line-height: 1.4;
  color: #333;
}

.notification-close {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 4px;
  color: #666;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.2s;
  padding: 0;
}

.notification-close:hover {
  background: rgba(0, 0, 0, 0.05);
  color: #333;
}

.notification-close:active {
  transform: scale(0.95);
}

/* Tipos de notificación */
.notification-success {
  border-left: 4px solid #10b981;
}

.notification-success .notification-icon {
  background: #d1fae5;
  color: #059669;
}

.notification-error {
  border-left: 4px solid #ef4444;
}

.notification-error .notification-icon {
  background: #fee2e2;
  color: #dc2626;
}

.notification-warning {
  border-left: 4px solid #f59e0b;
}

.notification-warning .notification-icon {
  background: #fef3c7;
  color: #d97706;
}

.notification-info {
  border-left: 4px solid #3b82f6;
}

.notification-info .notification-icon {
  background: #dbeafe;
  color: #2563eb;
}

.notification-loading {
  border-left: 4px solid #8b5cf6;
}

.notification-spinner {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border: 3px solid #e9d5ff;
  border-top-color: #8b5cf6;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ========== LOADING STATES ========== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  backdrop-filter: blur(2px);
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  color: white;
  margin-top: 16px;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
}

/* Botones en estado loading */
button.loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

button.loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* Disabled state con mejor feedback visual */
button:disabled:not(.loading) {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(30%);
}