/* ------------------------------------------------------------------ */
/* Buttons                                                              */
/* ------------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard);
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow-lg);
  transform: translateY(-2px);
  color: var(--color-white);
}

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

.btn-secondary:hover {
  border-color: var(--color-metal);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding-inline: var(--space-4);
}

.btn-ghost:hover {
  color: var(--color-white);
  background: var(--color-bg-elevated-2);
}

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

.btn-danger:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--fs-md);
}

.btn-block {
  width: 100%;
}

.btn-icon {
  padding: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-round);
  background: var(--color-bg-elevated-2);
  color: var(--color-text);
}

.btn-icon:hover {
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ------------------------------------------------------------------ */
/* Badges                                                               */
/* ------------------------------------------------------------------ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-live {
  background: rgba(var(--color-primary-rgb), 0.14);
  color: var(--color-primary);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
}

.badge-live::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: var(--radius-round);
  background: var(--color-primary);
  box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0.6);
  animation: badge-pulse 1.8s ease-out infinite;
}

.badge-offline {
  background: var(--color-bg-elevated-2);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.badge-offline::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: var(--radius-round);
  background: var(--color-text-muted);
}

.badge-metal {
  background: rgba(var(--color-metal-rgb), 0.12);
  color: var(--color-metal);
  border: 1px solid rgba(var(--color-metal-rgb), 0.25);
}

@keyframes badge-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0.55);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(var(--color-primary-rgb), 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0);
  }
}

/* ------------------------------------------------------------------ */
/* Cards                                                                */
/* ------------------------------------------------------------------ */

.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard),
    box-shadow var(--duration-base) var(--ease-standard);
}

.card--interactive:hover,
a.card:hover {
  transform: translateY(-4px);
  border-color: rgba(var(--color-primary-rgb), 0.4);
  box-shadow: var(--shadow-md);
}

.card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-bg-elevated-2);
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-standard);
}

.card--interactive:hover .card__media img,
a.card:hover .card__media img {
  transform: scale(1.06);
}

.card__body {
  padding: var(--space-5);
}

.card__title {
  font-size: var(--fs-md);
  margin-bottom: var(--space-2);
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.card__excerpt {
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

.card__footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
}

/* ------------------------------------------------------------------ */
/* Forms                                                                */
/* ------------------------------------------------------------------ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-label--optional::after {
  content: " (opcional)";
  font-weight: 400;
  color: var(--color-text-muted);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

.form-control:hover {
  border-color: var(--color-metal-dark);
}

.form-control:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-glow);
}

.form-control.is-invalid {
  border-color: var(--color-danger);
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23A7A7AC' stroke-width='1.5' fill='none' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-8);
}

.form-help {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.form-error {
  font-size: var(--fs-xs);
  color: var(--color-danger);
  font-weight: 600;
}

.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  appearance: none;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard);
}

.form-check input[type="checkbox"] {
  border-radius: 6px;
}

.form-check input[type="radio"] {
  border-radius: var(--radius-round);
}

.form-check input[type="checkbox"]:checked,
.form-check input[type="radio"]:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.form-check input[type="checkbox"]:checked::after {
  content: "";
  width: 5px;
  height: 9px;
  border: solid var(--color-white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px);
}

.form-check input[type="radio"]:checked::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: var(--radius-round);
  background: var(--color-white);
}

.form-check input:focus-visible {
  box-shadow: 0 0 0 4px var(--color-primary-glow);
}

input[type="range"] {
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-elevated-2);
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: var(--radius-round);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.2);
  transition: transform var(--duration-fast) var(--ease-standard);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

input[type="range"]::-moz-range-track {
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-elevated-2);
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: none;
  border-radius: var(--radius-round);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.2);
}

/* ------------------------------------------------------------------ */
/* Pagination                                                           */
/* ------------------------------------------------------------------ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.pagination__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding-inline: var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  font-weight: 600;
  border: 1px solid transparent;
}

.pagination__item:hover {
  color: var(--color-white);
  border-color: var(--color-border);
}

.pagination__item[aria-current="page"] {
  background: var(--gradient-primary);
  color: var(--color-white);
}

.pagination__item--disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ------------------------------------------------------------------ */
/* Breadcrumbs                                                          */
/* ------------------------------------------------------------------ */

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

.breadcrumbs a:hover {
  color: var(--color-white);
}

.breadcrumbs__sep {
  color: var(--color-metal-dark);
}

.breadcrumbs__current {
  color: var(--color-text);
}

/* ------------------------------------------------------------------ */
/* Modal / Dialog                                                       */
/* ------------------------------------------------------------------ */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal-backdrop);
  background: rgba(11, 11, 13, 0.8);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-base) var(--ease-standard),
    visibility 0s linear var(--duration-base);
}

.modal-backdrop--open {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  pointer-events: none;
}

.modal__dialog {
  width: 100%;
  max-width: 520px;
  max-height: calc(100vh - var(--space-8));
  overflow-y: auto;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transform: scale(0.96) translateY(8px);
  opacity: 0;
  transition: transform var(--duration-base) var(--ease-standard),
    opacity var(--duration-base) var(--ease-standard);
}

.modal--open .modal__dialog {
  pointer-events: auto;
  transform: scale(1) translateY(0);
  opacity: 1;
}

.modal--open {
  pointer-events: auto;
}

.modal__dialog--lg {
  max-width: 860px;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal__title {
  font-size: var(--fs-lg);
  margin: 0;
}

.modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-round);
  color: var(--color-text-muted);
}

.modal__close:hover {
  color: var(--color-white);
  background: var(--color-bg-elevated-2);
}

.modal__body {
  padding: var(--space-6);
}

.modal__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-border);
}

/* ------------------------------------------------------------------ */
/* Toast / flash notifications                                          */
/* ------------------------------------------------------------------ */

.toast-container {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  width: min(360px, calc(100vw - var(--space-8)));
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-metal);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  animation: toast-in var(--duration-base) var(--ease-out);
}

.toast--success {
  border-left-color: var(--color-success);
}

.toast--error {
  border-left-color: var(--color-danger);
}

.toast--info {
  border-left-color: var(--color-metal);
}

.toast__title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text);
}

.toast__message {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.toast__close {
  margin-left: auto;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.toast__close:hover {
  color: var(--color-white);
}

.toast--closing {
  animation: toast-out var(--duration-fast) var(--ease-in) forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateX(24px);
  }
}

/* ------------------------------------------------------------------ */
/* Skeleton loading                                                      */
/* ------------------------------------------------------------------ */

.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-elevated-2);
  border-radius: var(--radius-sm);
}

.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(
    90deg,
    transparent,
    rgba(var(--color-metal-rgb), 0.12),
    transparent
  );
  animation: skeleton-shimmer 1.6s ease-in-out infinite;
}

.skeleton--text {
  height: 0.9em;
  border-radius: 4px;
}

.skeleton--title {
  height: 1.6em;
  width: 60%;
}

.skeleton--card {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-md);
}

.skeleton--avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-round);
}

@keyframes skeleton-shimmer {
  100% {
    transform: translateX(100%);
  }
}

/* ------------------------------------------------------------------ */
/* Empty state                                                          */
/* ------------------------------------------------------------------ */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  padding: var(--space-10) var(--space-5);
  color: var(--color-text-muted);
}

.empty-state__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-round);
  background: var(--color-bg-elevated-2);
  color: var(--color-metal);
  margin-bottom: var(--space-2);
}

.empty-state__title {
  color: var(--color-text);
  font-size: var(--fs-lg);
  margin: 0;
}

.empty-state__desc {
  max-width: 40ch;
  font-size: var(--fs-sm);
}

/* ------------------------------------------------------------------ */
/* Tabs                                                                  */
/* ------------------------------------------------------------------ */

.tabs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
}

.tabs__item {
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}

.tabs__item:hover {
  color: var(--color-text);
}

.tabs__item[aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tabs__panel {
  padding-top: var(--space-6);
}

.tabs__panel[hidden] {
  display: none;
}