/* Design system layer for TFDL launcher and tool shells.
 * Keep this file reusable and token-driven.
 */

:root {
  --ds-space-1: 4px;
  --ds-space-2: 8px;
  --ds-space-3: 12px;
  --ds-space-4: 16px;
  --ds-space-5: 24px;
  --ds-space-6: 32px;
  --ds-space-7: 48px;
  --ds-space-8: 64px;

  --ds-radius-sm: 8px;
  --ds-radius-md: 12px;
  --ds-radius-lg: 16px;

  --ds-font-size-base: 16px;
  --ds-line-height: 1.5;
  --ds-heading-1: 32px;
  --ds-heading-2: 24px;
  --ds-heading-3: 20px;

  --ds-role-primary: var(--accent, #82b6ff);
  --ds-role-neutral: var(--line, #2a2f39);
  --ds-role-success: var(--green, #7dd9af);
  --ds-role-warning: var(--warn, #f6d27b);
  --ds-role-danger: var(--red, #ff8f97);
}

.ds-root {
  font-size: var(--ds-font-size-base);
  line-height: var(--ds-line-height);
}

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

.ds-page-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--ds-space-5);
  align-items: start;
}

.ds-page-header-copy {
  display: grid;
  gap: var(--ds-space-2);
}

.ds-page-header-copy h1 {
  margin: 0;
  font-size: var(--ds-heading-1);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.ds-page-header-copy p {
  margin: 0;
}

.ds-page-header-actions {
  display: grid;
  justify-items: end;
  gap: var(--ds-space-3);
}

.ds-btn,
.ds-input,
.ds-select,
.ds-textarea {
  font: inherit;
}

.ds-btn,
.ui-btn.ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ds-space-2);
  min-height: 40px;
  padding: var(--ds-space-2) var(--ds-space-4);
  border-radius: var(--ds-radius-sm);
  border: 1px solid var(--ds-role-neutral);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text, #eef1f7);
  text-decoration: none;
  cursor: pointer;
  transition: border-color 140ms ease, background-color 140ms ease, transform 140ms ease;
}

.ds-btn:hover,
.ui-btn.ds-btn:hover {
  border-color: color-mix(in srgb, var(--ds-role-primary) 45%, var(--ds-role-neutral));
  background: rgba(255, 255, 255, 0.04);
}

.ds-btn:active,
.ui-btn.ds-btn:active {
  transform: translateY(1px);
}

.ds-btn:focus-visible,
.ui-btn.ds-btn:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--ds-role-primary) 58%, transparent);
  outline-offset: 2px;
}

.ds-btn--primary,
.ui-btn.ds-btn--primary {
  background: color-mix(in srgb, var(--ds-role-primary) 18%, transparent);
  border-color: color-mix(in srgb, var(--ds-role-primary) 45%, var(--ds-role-neutral));
  color: color-mix(in srgb, var(--ds-role-primary) 75%, white);
}

.ds-btn--neutral,
.ui-btn.ds-btn--neutral {
  color: var(--text-soft, #c5ccda);
}

.ds-btn--success,
.ui-btn.ds-btn--success {
  border-color: color-mix(in srgb, var(--ds-role-success) 45%, var(--ds-role-neutral));
  color: color-mix(in srgb, var(--ds-role-success) 78%, white);
  background: color-mix(in srgb, var(--ds-role-success) 16%, transparent);
}

.ds-btn--danger,
.ui-btn.ds-btn--danger {
  border-color: color-mix(in srgb, var(--ds-role-danger) 45%, var(--ds-role-neutral));
  color: color-mix(in srgb, var(--ds-role-danger) 78%, white);
  background: color-mix(in srgb, var(--ds-role-danger) 16%, transparent);
}

.ds-btn--sm,
.ui-btn.ds-btn--sm {
  min-height: 32px;
  padding: var(--ds-space-1) var(--ds-space-3);
  font-size: 13px;
}

.ds-field {
  display: grid;
  gap: var(--ds-space-1);
}

.ds-field-label {
  font-size: 13px;
  color: var(--text-soft, #c5ccda);
}

.ds-field-hint {
  color: var(--text-dim, #96a0b3);
  font-size: 13px;
}

.ds-field-error {
  color: color-mix(in srgb, var(--ds-role-danger) 82%, white);
  font-size: 13px;
}

.ds-input,
.ds-select,
.ds-textarea {
  width: 100%;
  min-height: 40px;
  padding: var(--ds-space-2) var(--ds-space-3);
  border-radius: var(--ds-radius-sm);
  border: 1px solid var(--ds-role-neutral);
  background: rgba(12, 15, 20, 0.95);
  color: var(--text, #eef1f7);
}

.ds-textarea {
  min-height: 120px;
  resize: vertical;
}

.ds-input:focus-visible,
.ds-select:focus-visible,
.ds-textarea:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--ds-role-primary) 58%, transparent);
  outline-offset: 1px;
  border-color: color-mix(in srgb, var(--ds-role-primary) 45%, var(--ds-role-neutral));
}

.ds-card {
  border: 1px solid var(--ds-role-neutral);
  border-radius: var(--ds-radius-md);
  background: rgba(255, 255, 255, 0.02);
  padding: var(--ds-space-4);
}

.ds-alert {
  border-radius: var(--ds-radius-sm);
  border: 1px solid var(--ds-role-neutral);
  padding: var(--ds-space-3) var(--ds-space-4);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-soft, #c5ccda);
}

.ds-alert--success {
  border-color: color-mix(in srgb, var(--ds-role-success) 44%, var(--ds-role-neutral));
  background: color-mix(in srgb, var(--ds-role-success) 12%, transparent);
}

.ds-alert--warning {
  border-color: color-mix(in srgb, var(--ds-role-warning) 44%, var(--ds-role-neutral));
  background: color-mix(in srgb, var(--ds-role-warning) 12%, transparent);
}

.ds-alert--danger {
  border-color: color-mix(in srgb, var(--ds-role-danger) 44%, var(--ds-role-neutral));
  background: color-mix(in srgb, var(--ds-role-danger) 12%, transparent);
}

.ds-toast-stack {
  position: fixed;
  right: var(--ds-space-5);
  bottom: var(--ds-space-5);
  z-index: 120;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--ds-space-3);
  width: min(440px, calc(100vw - 48px));
  max-height: calc(100vh - 48px);
  pointer-events: none;
}

.ds-toast {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--ds-space-3);
  align-items: start;
  border: 1px solid color-mix(in srgb, var(--ds-role-neutral) 82%, white 18%);
  border-radius: var(--ds-radius-md);
  background: linear-gradient(180deg, rgba(17, 22, 30, 0.98), rgba(11, 15, 20, 0.98));
  padding: var(--ds-space-3);
  color: var(--text, #eef1f7);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(10px);
  pointer-events: auto;
  opacity: 0;
  transform: translateY(12px) scale(0.98);
  transition: opacity 180ms ease, transform 180ms ease;
}

.ds-toast.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.ds-toast.is-leaving {
  opacity: 0;
  transform: translateY(10px) scale(0.98);
}

.ds-toast[data-tone="success"] {
  border-color: color-mix(in srgb, var(--ds-role-success) 52%, var(--ds-role-neutral));
}

.ds-toast[data-tone="warning"] {
  border-color: color-mix(in srgb, var(--ds-role-warning) 58%, var(--ds-role-neutral));
}

.ds-toast[data-tone="error"] {
  border-color: color-mix(in srgb, var(--ds-role-danger) 58%, var(--ds-role-neutral));
}

.ds-toast__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(227, 234, 244, 0.95);
  flex: 0 0 auto;
}

.ds-toast[data-tone="success"] .ds-toast__icon {
  color: color-mix(in srgb, var(--ds-role-success) 74%, white);
  background: color-mix(in srgb, var(--ds-role-success) 14%, transparent);
}

.ds-toast[data-tone="warning"] .ds-toast__icon {
  color: color-mix(in srgb, var(--ds-role-warning) 82%, white);
  background: color-mix(in srgb, var(--ds-role-warning) 16%, transparent);
}

.ds-toast[data-tone="error"] .ds-toast__icon {
  color: color-mix(in srgb, var(--ds-role-danger) 76%, white);
  background: color-mix(in srgb, var(--ds-role-danger) 16%, transparent);
}

.ds-toast__icon svg,
.ds-toast__close svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ds-toast__body {
  min-width: 0;
  display: grid;
  gap: 4px;
  padding-top: 2px;
}

.ds-toast__title {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
}

.ds-toast__message {
  color: color-mix(in srgb, var(--text, #eef1f7) 88%, white);
  font-size: 13px;
  line-height: 1.4;
}

.ds-toast__close {
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(235, 240, 247, 0.72);
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin: -2px -2px 0 0;
  transition: background-color 140ms ease, color 140ms ease;
}

.ds-toast__close:hover,
.ds-toast__close:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.96);
}

.ds-modal,
.ds-drawer {
  position: fixed;
  z-index: 110;
  border: 1px solid var(--ds-role-neutral);
  border-radius: var(--ds-radius-md);
  background: rgba(12, 15, 20, 0.96);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.38);
}

.ds-modal {
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: min(720px, calc(100vw - 48px));
  max-height: min(80vh, 720px);
  overflow: auto;
}

.ds-drawer {
  top: 0;
  right: 0;
  bottom: 0;
  width: min(420px, 100vw);
  border-radius: 0;
}

.ds-tabs {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-1);
  border: 1px solid var(--ds-role-neutral);
  border-radius: 999px;
  padding: var(--ds-space-1);
  background: rgba(255, 255, 255, 0.02);
}

.ds-tab {
  border: 0;
  background: transparent;
  color: var(--text-soft, #c5ccda);
  border-radius: 999px;
  padding: var(--ds-space-1) var(--ds-space-3);
  cursor: pointer;
}

.ds-tab[aria-selected="true"] {
  background: color-mix(in srgb, var(--ds-role-primary) 16%, transparent);
  color: color-mix(in srgb, var(--ds-role-primary) 78%, white);
}

.ds-badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border: 1px solid var(--ds-role-neutral);
  border-radius: 999px;
  padding: 0 var(--ds-space-2);
  font-size: 12px;
  color: var(--text-soft, #c5ccda);
  background: rgba(255, 255, 255, 0.02);
}

.ds-badge[data-tone="success"] {
  border-color: color-mix(in srgb, var(--ds-role-success) 44%, var(--ds-role-neutral));
  color: color-mix(in srgb, var(--ds-role-success) 76%, white);
}

.ds-badge[data-tone="warning"] {
  border-color: color-mix(in srgb, var(--ds-role-warning) 44%, var(--ds-role-neutral));
  color: color-mix(in srgb, var(--ds-role-warning) 76%, white);
}

.ds-badge[data-tone="danger"] {
  border-color: color-mix(in srgb, var(--ds-role-danger) 44%, var(--ds-role-neutral));
  color: color-mix(in srgb, var(--ds-role-danger) 76%, white);
}

.ds-table-wrap {
  overflow: auto;
  border: 1px solid var(--ds-role-neutral);
  border-radius: var(--ds-radius-md);
  background: rgba(255, 255, 255, 0.01);
}

.ds-table {
  width: 100%;
  border-collapse: collapse;
}

.ds-table th,
.ds-table td {
  padding: var(--ds-space-2) var(--ds-space-3);
  border-bottom: 1px solid color-mix(in srgb, var(--ds-role-neutral) 86%, transparent);
  text-align: left;
}

.ds-table th {
  font-weight: 600;
  color: var(--text-dim, #96a0b3);
  background: rgba(8, 10, 14, 0.9);
}

.ds-row-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--ds-space-2);
}

.ds-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ds-space-3);
  padding-top: var(--ds-space-3);
}

.ds-pagination-list {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.ds-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-2);
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--text-dim, #96a0b3);
}

.ds-breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-2);
}

.ds-breadcrumb li + li::before {
  content: "/";
  color: var(--text-dim, #96a0b3);
}

.ds-dropdown {
  position: relative;
  display: inline-flex;
}

.ds-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 30;
  min-width: 180px;
  border: 1px solid var(--ds-role-neutral);
  border-radius: var(--ds-radius-sm);
  background: rgba(12, 15, 20, 0.98);
  padding: var(--ds-space-1);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.32);
}

.ds-dropdown-item {
  display: block;
  width: 100%;
  border: 0;
  border-radius: var(--ds-radius-sm);
  background: transparent;
  color: var(--text-soft, #c5ccda);
  text-align: left;
  padding: var(--ds-space-2);
  cursor: pointer;
}

.ds-dropdown-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text, #eef1f7);
}

.ds-skeleton {
  position: relative;
  overflow: hidden;
  border-radius: var(--ds-radius-sm);
  background: rgba(255, 255, 255, 0.08);
}

.ds-skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.16), transparent);
  animation: ds-skeleton-shimmer 1.4s linear infinite;
}

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

@media (max-width: 980px) {
  .ds-page-header {
    grid-template-columns: 1fr;
  }

  .ds-page-header-actions {
    justify-items: start;
  }
}

@media (max-width: 760px) {
  .ds-layout {
    padding: var(--ds-space-4);
  }

  .ds-toast-stack {
    left: var(--ds-space-4);
    right: var(--ds-space-4);
    bottom: var(--ds-space-4);
    width: auto;
    max-height: calc(100vh - 32px);
  }

  .ds-toast {
    max-width: none;
  }

  .ds-modal {
    width: calc(100vw - 32px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ds-toast-stack,
  .ds-toast,
  .ds-toast__close,
  .ds-btn,
  .ui-btn.ds-btn {
    transition: none;
  }

  .ds-skeleton::after {
    animation: none;
  }
}