/* ============================================================
   UltraTool360 — Components
   ============================================================ */

/* ============================================================
   1. 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-lg);
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: var(--text-base);
  transition: all var(--duration-normal) var(--ease-default);
  text-decoration: none;
  white-space: nowrap;
}

/* Base button disabled & loading */
.btn:disabled,
.btn.is-disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn.is-loading {
  pointer-events: none;
  color: transparent !important;
  position: relative;
}
.btn.is-loading::after {
  content: "";
  position: absolute;
  width: 1.25em;
  height: 1.25em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: var(--radius-full);
  animation: spinner 0.75s linear infinite;
  color: var(--color-text-inverse);
}
.btn-outline.is-loading::after,
.btn-secondary.is-loading::after,
.btn-ghost.is-loading::after {
  color: var(--color-text);
}
@keyframes spinner {
  to { transform: rotate(360deg); }
}

/* Variants */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-primary-text);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  filter: brightness(1.05);
}

.btn-accent {
  background: var(--gradient-accent);
  color: var(--neutral-0);
  box-shadow: var(--shadow-sm);
}
.btn-accent:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), var(--shadow-accent-glow);
  filter: brightness(1.05);
}

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

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

.btn-ghost {
  background: transparent;
  color: var(--color-text);
}
.btn-ghost:hover {
  background: var(--color-surface);
}

.btn-cta {
  background: var(--gradient-primary);
  color: var(--color-primary-text);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  position: relative;
  z-index: 1;
}
.btn-cta::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: var(--gradient-aurora);
  z-index: -1;
  border-radius: calc(var(--radius-lg) + 2px);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-default);
}
.btn-cta:hover {
  transform: translateY(-2px);
}
.btn-cta:hover::before {
  opacity: 1;
}

/* Sizes */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}
.btn-md {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
}
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* Modifiers */
.btn-icon {
  padding: var(--space-3);
  aspect-ratio: 1;
}
.btn-full {
  width: 100%;
}


/* ============================================================
   2. Cards
   ============================================================ */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--card-shadow);
  transition: all var(--duration-normal) var(--ease-default);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.card-gradient-border {
  position: relative;
  background-clip: padding-box;
  border: 2px solid transparent;
}
.card-gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  margin: -2px;
  background: var(--gradient-primary);
  z-index: -1;
}

.card-compact {
  padding: var(--space-4);
}

.card-header {
  margin-bottom: var(--space-4);
}
.card-body {
}
.card-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.card-image {
  margin: calc(var(--space-6) * -1) calc(var(--space-6) * -1) var(--space-6);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  overflow: hidden;
}
.card-compact .card-image {
  margin: calc(var(--space-4) * -1) calc(var(--space-4) * -1) var(--space-4);
}
.card-image img {
  width: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-default);
}
.card:hover .card-image img {
  transform: scale(1.05);
}


/* ============================================================
   3. Tool Card
   ============================================================ */
.tool-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--card-shadow);
  transition: all var(--duration-normal) var(--ease-default);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  border-color: var(--color-primary);
}

.tool-card__header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.tool-card__icon {
  width: 52px;
  height: 52px;
  background: var(--color-primary-light);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: all var(--duration-normal) var(--ease-default);
}

.tool-card:hover .tool-card__icon {
  background: var(--gradient-primary);
  color: var(--neutral-0);
  transform: scale(1.08);
}

.popular-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  border: 1px solid hsla(9, 91%, 56%, 0.3);
}

.tool-card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.tool-card__description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-5);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
  line-height: var(--leading-normal);
}

.tool-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-light);
}

.tool-card__category {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

.tool-card__action {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: transform var(--duration-fast) var(--ease-default);
}

.tool-card:hover .tool-card__action {
  transform: translateX(4px);
  color: var(--color-accent);
}


/* ============================================================
   4. Category Pill
   ============================================================ */
.category-pill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  transition: all var(--duration-fast) var(--ease-default);
  white-space: nowrap;
}
.category-pill:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}
.category-pill.is-active {
  background: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-primary);
}


/* ============================================================
   5. Badge
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125em 0.5em;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  background: var(--color-surface);
  color: var(--color-text-secondary);
}

.badge-primary {
  background: var(--color-primary-light);
  color: var(--color-primary);
}
.badge-accent {
  background: var(--color-accent-light);
  color: var(--color-accent);
}
.badge-secondary {
  background: var(--color-secondary-light);
  color: var(--color-secondary);
}
.badge-outline {
  background: transparent;
  border: 1px solid var(--color-border);
}
.badge-sm {
  font-size: 0.65rem;
  padding: 0.1em 0.4em;
}
.badge-lg {
  font-size: var(--text-sm);
  padding: 0.25em 0.75em;
}


/* ============================================================
   6. Input & Form Elements
   ============================================================ */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px hsla(194, 89%, 27%, 0.1);
}
.input::placeholder {
  color: var(--color-text-tertiary);
}

.input-group {
  position: relative;
  display: flex;
  align-items: center;
}
.input-group .input {
  flex: 1;
}
.input-search {
  padding-left: var(--space-10);
}
.input-search-icon {
  position: absolute;
  left: var(--space-3);
  color: var(--color-text-tertiary);
  pointer-events: none;
}

.textarea {
  min-height: 100px;
  resize: vertical;
}

.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 1rem;
  padding-right: var(--space-10);
}

/* Custom Checkbox/Radio */
.checkbox, .radio {
  width: 1.25rem;
  height: 1.25rem;
  border: 1px solid var(--color-border);
  appearance: none;
  background: var(--color-bg);
  cursor: pointer;
  transition: all var(--duration-fast);
  display: inline-grid;
  place-content: center;
}
.checkbox { border-radius: var(--radius-sm); }
.radio { border-radius: var(--radius-full); }

.checkbox::before,
.radio::before {
  content: "";
  width: 0.65em;
  height: 0.65em;
  transform: scale(0);
  transition: 120ms transform ease-in-out;
  box-shadow: inset 1em 1em var(--color-primary-text);
  transform-origin: center;
}
.checkbox::before {
  clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}
.radio::before {
  border-radius: var(--radius-full);
}
.checkbox:checked,
.radio:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.checkbox:checked::before,
.radio:checked::before {
  transform: scale(1);
}

/* Custom Toggle */
.toggle {
  appearance: none;
  width: 2.5rem;
  height: 1.25rem;
  background: var(--color-border);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  outline: none;
  transition: background var(--duration-fast);
}
.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: calc(1.25rem - 4px);
  height: calc(1.25rem - 4px);
  background: var(--neutral-0);
  border-radius: var(--radius-full);
  transition: transform var(--duration-fast);
}
.toggle:checked {
  background: var(--color-primary);
}
.toggle:checked::after {
  transform: translateX(1.25rem);
}

.form-group {
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-label {
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  color: var(--color-text);
}
.form-help {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}


/* ============================================================
   7. Upload Area
   ============================================================ */
.upload-area {
  border: 2px dashed var(--upload-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-12) var(--space-6);
  background: var(--upload-bg);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-default);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}
.upload-area:hover {
  border-color: var(--upload-border-active);
  background: var(--color-bg-alt);
}
.upload-area.is-dragging {
  border-style: solid;
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.upload-area.has-files {
  border-style: solid;
  border-color: var(--color-success);
}


/* ============================================================
   8. Progress Bar
   ============================================================ */
.progress {
  width: 100%;
  height: 6px;
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}
.progress__bar {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-out);
  width: 0%;
}
.progress__label {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
}
.progress-lg {
  height: 12px;
}


/* ============================================================
   9. Accordion
   ============================================================ */
.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--card-bg);
}
.accordion__item {
  border-bottom: 1px solid var(--color-border);
}
.accordion__item:last-child {
  border-bottom: none;
}
.accordion__trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  background: transparent;
  text-align: left;
}
.accordion__trigger:hover {
  background: var(--color-surface);
}
.accordion__icon {
  transition: transform var(--duration-normal) var(--ease-default);
  color: var(--color-text-tertiary);
}
.accordion__item.is-open .accordion__icon {
  transform: rotate(180deg);
}
.accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-in-out);
  background: var(--card-bg);
}
.accordion__item.is-open .accordion__content {
  max-height: 1000px; 
}
.accordion__content-inner {
  padding: 0 var(--space-6) var(--space-4);
  color: var(--color-text-secondary);
}


/* ============================================================
   10. Toast
   ============================================================ */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}
.toast {
  background: var(--glass-bg-heavy);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-xl);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 300px;
  transform: translateX(100%);
  opacity: 0;
  animation: toast-enter var(--duration-normal) var(--ease-out) forwards;
}
@keyframes toast-enter {
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
.toast.is-closing {
  animation: toast-exit var(--duration-normal) var(--ease-in) forwards;
}
@keyframes toast-exit {
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}
.toast-success { border-left: 4px solid var(--color-success); }
.toast-error { border-left: 4px solid var(--color-error); }
.toast-warning { border-left: 4px solid var(--color-warning); }
.toast-info { border-left: 4px solid var(--color-info); }


/* ============================================================
   11. Modal
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: hsla(0, 0%, 0%, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-default);
}
.modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}
.modal {
  background: var(--card-bg);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--duration-normal) var(--ease-out);
}
.modal-overlay.is-open .modal {
  transform: scale(1) translateY(0);
}
.modal__header {
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
}
.modal__close {
  color: var(--color-text-tertiary);
  padding: var(--space-2);
  border-radius: var(--radius-full);
}
.modal__close:hover {
  background: var(--color-surface);
  color: var(--color-text);
}
.modal__body {
  padding: var(--space-6);
}
.modal__footer {
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}


/* ============================================================
   12. Breadcrumb
   ============================================================ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}
.breadcrumb__item {
  display: inline-flex;
  align-items: center;
}
.breadcrumb__item a {
  transition: color var(--duration-fast);
}
.breadcrumb__item a:hover {
  color: var(--color-primary);
}
.breadcrumb__item.is-current {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}
.breadcrumb__separator {
  color: var(--color-text-tertiary);
  margin-inline: var(--space-1);
}


/* ============================================================
   13. Tooltip
   ============================================================ */
.tooltip {
  position: relative;
  display: inline-block;
}
.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: var(--space-2) var(--space-3);
  background: var(--neutral-800);
  color: var(--neutral-0);
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: all var(--duration-fast) var(--ease-out);
  z-index: var(--z-tooltip);
}
.tooltip::after {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: var(--neutral-800) transparent transparent transparent;
  pointer-events: none;
  opacity: 0;
  transition: all var(--duration-fast) var(--ease-out);
}
.tooltip:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}
.tooltip:hover::after {
  opacity: 1;
}
[data-theme="dark"] .tooltip::before {
  background: var(--neutral-200);
  color: var(--neutral-900);
}
[data-theme="dark"] .tooltip::after {
  border-color: var(--neutral-200) transparent transparent transparent;
}


/* ============================================================
   14. Divider
   ============================================================ */
.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
  margin-block: var(--space-8);
}
.divider-vertical {
  width: 1px;
  height: auto;
  background: var(--color-border);
  margin-inline: var(--space-4);
  align-self: stretch;
}


/* ============================================================
   15. Avatar / Icon Container
   ============================================================ */
.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-xl);
}
.icon-box-sm {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}
.icon-box-md {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  font-size: var(--text-lg);
}
.icon-box-lg {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  font-size: var(--text-2xl);
}