/* ==========================================================================
   COMPONENTS — Gestor de Calificaciones
   
   Clases reutilizables con namespace `ds-` para evitar conflictos
   con Bootstrap y CSS legacy. Usa tokens de design-system.css.
   ========================================================================== */

/* =========================================================================
   BOTONES
   
   Jerarquía: primary > secondary > ghost > danger > icon-only
   Padding con escala de spacing. Transiciones con easing físico (Emil Kowalski).
   ========================================================================= */

.ds-btn,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ds-space-2);
  padding: 8px 16px;
  font-family: var(--ds-font-family);
  font-size: var(--ds-text-sm);
  font-weight: var(--ds-font-semibold);
  line-height: var(--ds-leading-tight);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--ds-radius-md);
  cursor: pointer;
  transition:
    transform 140ms cubic-bezier(0.16, 1, 0.3, 1),
    background-color 160ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 160ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 160ms cubic-bezier(0.16, 1, 0.3, 1),
    color 160ms cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-user-select: none;
  user-select: none;
  letter-spacing: 0.01em;
}

.ds-btn:focus-visible,
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--ds-white, #fff), 0 0 0 4px var(--ds-primary-500, #3562a3);
}

.ds-btn:disabled,
.ds-btn[disabled],
.btn:disabled,
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  transform: none !important;
  box-shadow: none !important;
}

.ds-btn i,
.ds-btn .bi,
.btn i,
.btn .bi {
  font-size: 1.05em;
  line-height: 1;
}

/* — Primary — */
.ds-btn--primary,
.btn-primary {
  background-color: var(--ds-primary-800);
  border-color: var(--ds-primary-800);
  color: var(--ds-white);
  box-shadow: 0 1px 3px rgba(25, 46, 78, 0.12);
}

.ds-btn--primary:hover,
.btn-primary:hover {
  background-color: var(--ds-primary-700);
  border-color: var(--ds-primary-700);
  color: var(--ds-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(25, 46, 78, 0.22);
}

.ds-btn--primary:active,
.btn-primary:active {
  background-color: var(--ds-primary-900);
  border-color: var(--ds-primary-900);
  transform: scale(0.98) translateY(0);
  box-shadow: 0 1px 2px rgba(25, 46, 78, 0.15);
}

/* — Secondary — */
.ds-btn--secondary,
.btn-secondary,
.btn-outline-secondary {
  background-color: var(--ds-white);
  border-color: var(--ds-gray-300);
  color: var(--ds-gray-700);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.ds-btn--secondary:hover,
.btn-secondary:hover,
.btn-outline-secondary:hover {
  background-color: var(--ds-gray-50);
  border-color: var(--ds-gray-400);
  color: var(--ds-gray-900);
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
}

.ds-btn--secondary:active,
.btn-secondary:active,
.btn-outline-secondary:active {
  background-color: var(--ds-gray-100);
  transform: scale(0.98) translateY(0);
  box-shadow: none;
}

/* — Ghost — */
.ds-btn--ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--ds-primary-700);
}

.ds-btn--ghost:hover {
  background-color: var(--ds-primary-50);
  color: var(--ds-primary-800);
  transform: translateY(-1px);
}

.ds-btn--ghost:active {
  background-color: var(--ds-primary-100);
  transform: scale(0.98) translateY(0);
}

/* — Danger — */
.ds-btn--danger,
.btn-danger {
  background-color: var(--ds-error);
  border-color: var(--ds-error);
  color: var(--ds-white);
  box-shadow: 0 1px 3px rgba(185, 28, 28, 0.15);
}

.ds-btn--danger:hover,
.btn-danger:hover {
  background-color: #991b1b;
  border-color: #991b1b;
  color: var(--ds-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(185, 28, 28, 0.22);
}

.ds-btn--danger:active,
.btn-danger:active {
  background-color: #7f1d1d;
  border-color: #7f1d1d;
  transform: scale(0.98) translateY(0);
  box-shadow: 0 1px 2px rgba(185, 28, 28, 0.15);
}

.ds-btn--danger:focus-visible,
.btn-danger:focus-visible {
  box-shadow: 0 0 0 2px var(--ds-white), 0 0 0 4px var(--ds-error);
}

/* — Success — */
.btn-success {
  background-color: var(--ds-success);
  border-color: var(--ds-success);
  color: var(--ds-white);
  box-shadow: 0 1px 3px rgba(26, 127, 75, 0.15);
}

.btn-success:hover {
  background-color: #15663c;
  border-color: #15663c;
  color: var(--ds-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 127, 75, 0.22);
}

.btn-success:active {
  background-color: #0f4c2c;
  transform: scale(0.98) translateY(0);
}

/* — Outline Primary — */
.btn-outline-primary {
  background-color: transparent;
  border-color: var(--ds-primary-800);
  color: var(--ds-primary-800);
}

.btn-outline-primary:hover {
  background-color: var(--ds-primary-800);
  border-color: var(--ds-primary-800);
  color: var(--ds-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(25, 46, 78, 0.18);
}

.btn-outline-primary:active {
  transform: scale(0.98) translateY(0);
  background-color: var(--ds-primary-900);
}

/* — Icon Only — */
.ds-btn--icon {
  background-color: transparent;
  border-color: transparent;
  color: var(--ds-gray-500);
  padding: var(--ds-space-2);
  border-radius: var(--ds-radius-sm);
  transition: background-color 140ms var(--ds-ease-out), color 140ms var(--ds-ease-out), transform 120ms var(--ds-ease-out);
}

.ds-btn--icon:hover {
  background-color: var(--ds-gray-100);
  color: var(--ds-primary-700);
  transform: scale(1.06);
}

.ds-btn--icon:active {
  background-color: var(--ds-gray-200);
  transform: scale(0.92);
}

/* — Sizes — */
.ds-btn--sm,
.btn-sm {
  padding: 5px 12px;
  font-size: var(--ds-text-xs);
  gap: var(--ds-space-1);
  border-radius: var(--ds-radius-sm);
}

.ds-btn--lg,
.btn-lg {
  padding: 12px 24px;
  font-size: var(--ds-text-base);
  border-radius: var(--ds-radius-md);
}

/* =========================================================================
   FORMULARIOS
   
   Inputs y selects con focus rings accesibles estilo Login.
   Labels con peso y tamaño consistentes.
   ========================================================================= */

.ds-label,
.form-label {
  display: block;
  font-family: var(--ds-font-family);
  font-size: var(--ds-text-sm);
  font-weight: var(--ds-font-semibold);
  color: var(--ds-gray-700);
  margin-bottom: 6px;
  line-height: var(--ds-leading-normal);
}

.ds-input,
.ds-select,
.form-control,
.form-select {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--ds-font-family);
  font-size: var(--ds-text-sm);
  font-weight: var(--ds-font-regular);
  line-height: var(--ds-leading-normal);
  color: var(--ds-gray-900);
  background-color: var(--ds-white);
  border: 1px solid var(--ds-gray-300);
  border-radius: var(--ds-radius-md);
  transition:
    border-color 150ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 150ms cubic-bezier(0.16, 1, 0.3, 1),
    background-color 150ms cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-appearance: none;
  appearance: none;
}

.ds-input::placeholder,
.form-control::placeholder {
  color: var(--ds-gray-400);
  font-weight: var(--ds-font-regular);
}

.ds-input:hover,
.ds-select:hover,
.form-control:hover,
.form-select:hover {
  border-color: #94a3b8;
}

.ds-input:focus,
.ds-select:focus,
.form-control:focus,
.form-select:focus {
  outline: none;
  border-color: var(--ds-primary-800);
  box-shadow: 0 0 0 3px rgba(25, 46, 78, 0.12);
  background-color: var(--ds-white);
}

.ds-input--error,
.ds-select--error,
.form-control.is-invalid {
  border-color: var(--ds-error);
}

.ds-input--error:focus,
.ds-select--error:focus,
.form-control.is-invalid:focus {
  border-color: var(--ds-error);
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.15);
}

.ds-input:disabled,
.ds-select:disabled,
.form-control:disabled,
.form-select:disabled {
  background-color: var(--ds-gray-50);
  color: var(--ds-gray-400);
  cursor: not-allowed;
  border-color: var(--ds-gray-200);
}

/* Select arrow */
.ds-select,
.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%235a6070' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  background-size: 14px 10px;
  padding-right: 2.5rem;
}

/* Form group */
.ds-form-group,
.mb-3 {
  margin-bottom: var(--ds-space-4);
}

.ds-form-hint {
  font-size: var(--ds-text-xs);
  color: var(--ds-gray-500);
  margin-top: var(--ds-space-1);
}

.ds-form-error {
  font-size: var(--ds-text-xs);
  color: var(--ds-error);
  margin-top: var(--ds-space-1);
}

/* =========================================================================
   TABLAS
   
   Legibilidad para datos tabulares. Row hover sutil, sin transform.
   Headers en uppercase con peso visual claro.
   ========================================================================= */

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

.ds-table thead th {
  padding: var(--ds-space-3) var(--ds-space-4);
  font-size: var(--ds-text-xs);
  font-weight: var(--ds-font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ds-gray-500);
  background-color: var(--ds-gray-50);
  border-bottom: 2px solid var(--ds-gray-200);
  text-align: left;
  white-space: nowrap;
}

.ds-table tbody td {
  padding: var(--ds-space-3) var(--ds-space-4);
  color: var(--ds-gray-800);
  border-bottom: 1px solid var(--ds-gray-100);
  vertical-align: middle;
  font-weight: var(--ds-font-regular);
}

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

.ds-table tbody tr:hover {
  background-color: var(--ds-gray-50);
}

/* Row recientemente actualizado — flash verde que se desvanece */
.ds-table tbody tr.ds-table--updated {
  animation: ds-row-highlight 2s var(--ds-ease-out);
}

@keyframes ds-row-highlight {
  from { background-color: var(--ds-success-bg); }
  to   { background-color: transparent; }
}

/* Celda centrada (para acciones, badges) */
.ds-table .ds-cell-center {
  text-align: center;
}

/* =========================================================================
   ALERTAS
   
   Comunicación de estado del sistema. Sin gradientes.
   ========================================================================= */

.ds-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--ds-space-3);
  padding: var(--ds-space-3) var(--ds-space-4);
  font-family: var(--ds-font-family);
  font-size: var(--ds-text-sm);
  line-height: var(--ds-leading-normal);
  border: 1px solid;
  border-radius: var(--ds-radius-md);
}

.ds-alert i,
.ds-alert .bi {
  flex-shrink: 0;
  font-size: var(--ds-text-lg);
  line-height: 1;
  margin-top: 1px;
}

.ds-alert--success {
  background-color: var(--ds-success-bg);
  border-color: var(--ds-success-border);
  color: var(--ds-success);
}

.ds-alert--warning {
  background-color: var(--ds-warning-bg);
  border-color: var(--ds-warning-border);
  color: var(--ds-warning);
}

.ds-alert--error {
  background-color: var(--ds-error-bg);
  border-color: var(--ds-error-border);
  color: var(--ds-error);
}

.ds-alert--info {
  background-color: var(--ds-info-bg);
  border-color: var(--ds-info-border);
  color: var(--ds-info);
}

/* =========================================================================
   BADGES
   
   Indicadores de estado compactos. Color-coded semánticamente.
   ========================================================================= */

.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-1);
  padding: 2px var(--ds-space-2);
  font-family: var(--ds-font-family);
  font-size: var(--ds-text-xs);
  font-weight: var(--ds-font-semibold);
  line-height: var(--ds-leading-normal);
  border-radius: var(--ds-radius-sm);
  white-space: nowrap;
}

.ds-badge--success {
  background-color: var(--ds-success-bg);
  color: var(--ds-success);
}

.ds-badge--warning {
  background-color: var(--ds-warning-bg);
  color: var(--ds-warning);
}

.ds-badge--error {
  background-color: var(--ds-error-bg);
  color: var(--ds-error);
}

.ds-badge--info {
  background-color: var(--ds-info-bg);
  color: var(--ds-info);
}

.ds-badge--neutral {
  background-color: var(--ds-gray-100);
  color: var(--ds-gray-600);
}

.ds-badge--primary {
  background-color: var(--ds-primary-50);
  color: var(--ds-primary-700);
}

/* =========================================================================
   CARDS
   
   Contenedor refinado con elevación sutil y borde estructurado.
   ========================================================================= */

.ds-card,
.card {
  background-color: var(--ds-white);
  border: 1px solid rgba(25, 46, 78, 0.08);
  border-radius: var(--ds-radius-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02), 0 4px 14px rgba(25, 46, 78, 0.04);
  overflow: hidden;
  transition: transform 160ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 160ms cubic-bezier(0.16, 1, 0.3, 1), border-color 160ms ease;
}

.ds-card__header,
.card-header {
  padding: var(--ds-space-4) var(--ds-space-5);
  border-bottom: 1px solid var(--ds-gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--ds-white);
}

.ds-card__title,
.card-title {
  font-size: var(--ds-text-lg);
  font-weight: var(--ds-font-semibold);
  color: var(--ds-gray-900);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--ds-space-2);
}

.ds-card__body,
.card-body {
  padding: var(--ds-space-5);
}

.ds-card__body--flush {
  padding: 0;
}

.ds-card__footer,
.card-footer {
  padding: var(--ds-space-3) var(--ds-space-5);
  border-top: 1px solid var(--ds-gray-100);
  background-color: var(--ds-gray-50);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--ds-space-3);
}

/* =========================================================================
   PRELOADER
   
   Animación de entrada limpia. Logo con fade + scale sutil.
   ========================================================================= */

.ds-preloader {
  position: fixed;
  inset: 0;
  z-index: var(--ds-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--ds-white);
  transition: opacity var(--ds-duration-slow) var(--ds-ease-in);
}

.ds-preloader.ds-preloader--hidden {
  opacity: 0;
  pointer-events: none;
}

.ds-preloader__logo {
  width: 64px;
  height: 64px;
  animation: ds-preloader-pulse 1.5s var(--ds-ease-in-out) infinite;
}

@keyframes ds-preloader-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.05); }
}

/* =========================================================================
   MODAL OVERRIDES
   
   Modales institucionales con cabecera en gradiente marino y micro-trama.
   ========================================================================= */

.ds-modal .modal-content,
.modal-content {
  border: 1px solid rgba(25, 46, 78, 0.1);
  border-radius: var(--ds-radius-xl, 14px);
  box-shadow: 0 16px 40px rgba(12, 22, 36, 0.18), 0 4px 12px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.ds-modal .modal-header,
.modal-header {
  background: linear-gradient(135deg, #0c1624 0%, #112038 45%, #192E4E 100%);
  color: var(--ds-white);
  border-bottom: none;
  padding: var(--ds-space-4) var(--ds-space-5);
  position: relative;
}

.ds-modal .modal-header::before,
.modal-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}

.ds-modal .modal-title,
.modal-title,
.modal-header .modal-title,
.modal-header h1,
.modal-header h2,
.modal-header h3,
.modal-header h4,
.modal-header h5,
.modal-header h6,
.modal-header #tituloModal {
  font-family: var(--ds-font-family) !important;
  font-size: var(--ds-text-lg) !important;
  font-weight: var(--ds-font-semibold) !important;
  color: #ffffff !important;
  position: relative;
  z-index: 1;
}

.ds-modal .modal-header i,
.ds-modal .modal-header .bi,
.modal-header i,
.modal-header .bi,
.modal-header .modal-title i,
.modal-header .modal-title .bi {
  color: #ffffff !important;
  position: relative;
  z-index: 1;
}

.ds-modal .modal-header .btn-close,
.modal-header .btn-close {
  filter: brightness(0) invert(1) !important;
  opacity: 0.8 !important;
  transition: opacity 120ms var(--ds-ease-out), transform 120ms var(--ds-ease-out);
  position: relative;
  z-index: 1;
}

.ds-modal .modal-header .btn-close:hover,
.modal-header .btn-close:hover {
  opacity: 1 !important;
  transform: scale(1.08);
}

.ds-modal .modal-header .btn-close:active,
.modal-header .btn-close:active {
  transform: scale(0.92);
}

.ds-modal .modal-body,
.modal-body {
  padding: var(--ds-space-5);
  background-color: var(--ds-white);
}

.ds-modal .modal-footer,
.modal-footer {
  padding: var(--ds-space-3) var(--ds-space-5);
  border-top: 1px solid var(--ds-gray-100);
  background-color: var(--ds-gray-50);
}

/* =========================================================================
   TOAST NOTIFICATIONS
   
   Feedback no-intrusivo post-acción. Auto-dismiss con animación.
   ========================================================================= */

.ds-toast-container {
  position: fixed;
  top: var(--ds-space-4);
  right: var(--ds-space-4);
  z-index: var(--ds-z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-2);
  pointer-events: none;
}

.ds-toast {
  display: flex;
  align-items: center;
  gap: var(--ds-space-3);
  padding: var(--ds-space-3) var(--ds-space-4);
  background-color: var(--ds-white);
  border: 1px solid var(--ds-gray-200);
  border-radius: var(--ds-radius-md);
  box-shadow: var(--ds-shadow-lg);
  font-family: var(--ds-font-family);
  font-size: var(--ds-text-sm);
  color: var(--ds-gray-800);
  pointer-events: all;
  animation: ds-toast-in var(--ds-duration-slow) var(--ds-ease-out);
  max-width: 400px;
}

.ds-toast--leaving {
  animation: ds-toast-out var(--ds-duration-normal) var(--ds-ease-in) forwards;
}

.ds-toast--success { border-left: 3px solid var(--ds-success); }
.ds-toast--error   { border-left: 3px solid var(--ds-error); }
.ds-toast--warning { border-left: 3px solid var(--ds-warning); }
.ds-toast--info    { border-left: 3px solid var(--ds-info); }

@keyframes ds-toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes ds-toast-out {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(20px); }
}

/* =========================================================================
   LOADING STATE — Botón con spinner
   ========================================================================= */

.ds-btn--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.ds-btn--loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: var(--ds-radius-full);
  animation: ds-spinner 0.6s linear infinite;
}

.ds-btn--primary.ds-btn--loading::after {
  border-color: rgba(255, 255, 255, 0.3);
  border-right-color: transparent;
  border-top-color: var(--ds-white);
}

@keyframes ds-spinner {
  to { transform: rotate(360deg); }
}

/* =========================================================================
   EMPTY STATE
   ========================================================================= */

.ds-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--ds-space-12) var(--ds-space-6);
  text-align: center;
}

.ds-empty-state__icon {
  font-size: 2.5rem;
  color: var(--ds-gray-300);
  margin-bottom: var(--ds-space-4);
}

.ds-empty-state__title {
  font-size: var(--ds-text-lg);
  font-weight: var(--ds-font-medium);
  color: var(--ds-gray-600);
  margin-bottom: var(--ds-space-2);
}

.ds-empty-state__description {
  font-size: var(--ds-text-sm);
  color: var(--ds-gray-400);
  max-width: 320px;
  margin-bottom: var(--ds-space-6);
}

/* =========================================================================
   SECTION HEADER (dentro de página)
   ========================================================================= */

.ds-page-header {
  margin-bottom: var(--ds-space-6);
  padding-bottom: var(--ds-space-4);
  border-bottom: 1px solid var(--ds-gray-200);
}

.ds-page-header__title {
  font-family: var(--ds-font-family);
  font-size: var(--ds-text-2xl);
  font-weight: var(--ds-font-bold);
  color: var(--ds-gray-900);
  margin: 0 0 var(--ds-space-1) 0;
  display: flex;
  align-items: center;
  gap: var(--ds-space-3);
}

.ds-page-header__subtitle {
  font-size: var(--ds-text-sm);
  color: var(--ds-gray-500);
  margin: 0;
  font-weight: var(--ds-font-regular);
}

/* =========================================================================
   UTILITY — Focus visible global
   
   Aplica un focus ring visible a cualquier elemento interactivo
   que no tenga un focus explícito definido.
   ========================================================================= */

*:focus-visible {
  outline: 2px solid var(--ds-primary-500);
  outline-offset: 2px;
}

/* =========================================================================
   UTILITY — Screen reader only
   ========================================================================= */

.ds-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;
}