/* Stable shared component rules and verified Figma Text Style mappings. */

/*
 * Figma Text Style: Title/h1
 * Verified on nodes 198:53298 and 198:53299.
 * Home titles use the self-hosted Source Han Serif SC page subset.
 */
.text-title-h1 {
  margin: 0;
  font-family: var(--font-serif-cjk);
  font-size: 24px;
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.48px;
  line-height: 32px;
}

.text-content-title,
.text-title-h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-serif-cjk);
  font-style: normal;
}

.text-content-title {
  font-size: 64px;
  font-weight: 700;
  letter-spacing: 2px;
  line-height: 64px;
}

.text-title-h2 {
  font-size: 40px;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 44px;
}

.text-title-h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
}

.text-body-xl,
.text-body-lg,
.text-body-default,
.text-body-reading,
.text-body-compact,
.text-control-default {
  margin: 0;
  font-family: var(--font-sans);
  font-style: normal;
  letter-spacing: 0;
}

.text-body-xl { font-size: 18px; font-weight: 400; line-height: 24px; }
.text-body-lg { font-size: 16px; font-weight: 400; line-height: 24px; }
.text-body-default { font-size: 14px; font-weight: 400; line-height: 1.6; }
.text-body-reading { font-size: 14px; font-weight: 400; line-height: 1.7; }
.text-body-compact { font-size: 13px; font-weight: 400; line-height: 1.65; }
.text-control-default { font-size: 13px; font-weight: 500; line-height: 16px; }

.effect-overlay { box-shadow: 0 8px 24px rgb(0 0 0 / 8%); }
.effect-modal { box-shadow: 0 20px 60px rgb(0 0 0 / 12%); }

/*
 * Component library migration source:
 * interndiscovery/platform-static-prototype/design-system/atoms.html and
 * shared/css/design-system-overrides.css.
 *
 * Component-level aliases bind the migrated rules to this project's tokens;
 * no reference-project token names are retained below.
 */
:root {
  --component-button-bg: var(--paper);
  --component-button-bg-hover: var(--bg-soft);
  --component-button-border: var(--line);
  --component-button-fg: var(--ink-soft);
  --component-button-primary-bg: var(--ink);
  --component-button-primary-bg-hover: var(--ink-soft);
  --component-button-primary-fg: var(--paper);
  --component-text-button-bg: var(--bg);
  --component-text-button-bg-hover: var(--bg-soft);
  --component-text-button-fg: var(--ink-soft);
  --component-control-height-sm: 32px;
  --component-control-height-md: 36px;
  --component-focus-ring: color-mix(in srgb, var(--ink) 28%, transparent);
  --component-overlay-bg: color-mix(in srgb, var(--ink) 32%, transparent);
  --component-dialog-shadow: 0 20px 60px -4px color-mix(in srgb, var(--ink) 12%, transparent);
  --component-toast-shadow: 0 12px 32px color-mix(in srgb, var(--ink) 30%, transparent);
  --component-motion-fast: 150ms ease;
  --component-motion-dialog: 200ms ease;
  --component-motion-toast: 220ms ease;
}

/* Buttons: sizes, hierarchy levels, text actions, danger and disabled states. */
.btn,
.btn-primary,
.btn-icon,
.btn-text,
.btn-link,
.tm-btn {
  box-sizing: border-box;
  appearance: none;
  margin: 0;
  font-family: var(--font-sans);
  text-decoration: none;
}

.btn,
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: var(--component-control-height-md);
  padding: 7px 14px;
  border-radius: var(--radius);
  box-shadow: none;
  font-size: 13px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 0;
  cursor: pointer;
  transition: background-color var(--component-motion-fast), border-color var(--component-motion-fast), opacity var(--component-motion-fast);
}

.btn {
  border: 1px solid var(--component-button-border);
  background: var(--component-button-bg);
  color: var(--component-button-fg);
}

.btn:hover:not(:disabled) {
  border-color: var(--component-button-border);
  background: var(--component-button-bg-hover);
  color: var(--component-button-fg);
}

.btn:active:not(:disabled) {
  border-color: var(--component-button-border);
  background: var(--component-button-bg);
  color: var(--component-button-fg);
}

.btn-primary {
  border: 1px solid var(--component-button-primary-bg);
  background: var(--component-button-primary-bg);
  color: var(--component-button-primary-fg);
}

.btn-primary:hover:not(:disabled) {
  border-color: var(--component-button-primary-bg-hover);
  background: var(--component-button-primary-bg-hover);
  color: var(--component-button-primary-fg);
}

.btn-primary:active:not(:disabled) {
  border-color: var(--component-button-primary-bg);
  background: var(--component-button-primary-bg);
  color: var(--component-button-primary-fg);
}

/*
 * Figma text button: nodes 242:63219 (default) and 242:63221 (hover).
 * Natural width is text width + 24px horizontal padding; the reference copy
 * therefore renders at 84px without hard-coding a content-specific width.
 */
.btn-text {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--component-control-height-md);
  min-height: var(--component-control-height-md);
  padding: 6px 12px;
  border: 0;
  border-radius: var(--radius-card);
  background: var(--component-text-button-bg);
  color: var(--component-text-button-fg);
  box-shadow: none;
  font-size: 15px;
  font-weight: 400;
  line-height: 24px;
  letter-spacing: 0;
  cursor: pointer;
  transition: background-color var(--component-motion-fast);
}

.btn-text:hover:not(:disabled) {
  background: var(--component-text-button-bg-hover);
  color: var(--component-text-button-fg);
  cursor: pointer;
}

.btn-text:active:not(:disabled) {
  background: var(--component-text-button-bg-hover);
}

/*
 * Text link button. The supplied Figma node ids 242:63225 and 242:63226 are
 * currently absent from the file, so typography and color inherit the verified
 * text-button baseline while the underline behavior follows the user rule.
 */
.btn-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--component-text-button-fg);
  box-shadow: none;
  font-size: 15px;
  font-weight: 400;
  line-height: 24px;
  letter-spacing: 0;
  cursor: pointer;
  text-decoration: none;
}

.btn-link::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--component-motion-fast);
}

.btn-link:hover {
  color: var(--component-text-button-fg);
  cursor: pointer;
}

.btn-link:hover::after,
.btn-link:focus-visible::after {
  transform: scaleX(1);
}

.btn:disabled,
.btn-primary:disabled,
.btn-text:disabled,
.btn-link:disabled,
.btn-icon:disabled,
.btn-icon[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn:focus-visible,
.btn-primary:focus-visible,
.btn-text:focus-visible,
.btn-link:focus-visible,
.btn-icon:focus-visible,
.tm-btn:focus-visible,
.tm-chip:focus-visible,
.tm-input:focus-visible,
.tm-textarea:focus-visible {
  outline: 2px solid var(--component-focus-ring);
  outline-offset: 2px;
}

.btn-size-sm {
  min-height: var(--component-control-height-sm);
  height: var(--component-control-height-sm);
  padding-inline: 12px;
}

.btn-size-md {
  min-height: var(--component-control-height-md);
  height: var(--component-control-height-md);
  padding-inline: 14px;
}

.btn > svg,
.btn-primary > svg,
.btn-icon > svg {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
}

.btn-icon {
  display: inline-grid;
  place-items: center;
  width: var(--component-control-height-md);
  min-width: var(--component-control-height-md);
  height: var(--component-control-height-md);
  min-height: var(--component-control-height-md);
  padding: 0;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--component-button-fg);
  box-shadow: none;
  cursor: pointer;
  transition: background-color var(--component-motion-fast), color var(--component-motion-fast), opacity var(--component-motion-fast);
}

.btn-icon:hover:not(:disabled):not([aria-disabled="true"]) {
  background: var(--component-button-bg-hover);
  color: var(--ink);
}

.btn-icon:active:not(:disabled):not([aria-disabled="true"]) {
  background: var(--line);
  color: var(--ink);
}

.btn-icon.btn-size-sm {
  width: var(--component-control-height-sm);
  min-width: var(--component-control-height-sm);
  height: var(--component-control-height-sm);
  min-height: var(--component-control-height-sm);
}

.btn-icon.btn-size-md {
  width: var(--component-control-height-md);
  min-width: var(--component-control-height-md);
  height: var(--component-control-height-md);
  min-height: var(--component-control-height-md);
}

/* Modal / Dialog: only the migrated Create Topic form variant. */
.tm-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--component-overlay-bg);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  animation: tm-fade 180ms ease;
}

.tm-overlay.is-open {
  display: flex;
}

.tm-panel {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 520px;
  max-height: calc(100vh - 48px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--paper);
  box-shadow: var(--component-dialog-shadow);
  animation: tm-panel-in var(--component-motion-dialog);
}

.tm-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--line);
}

.tm-title {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.tm-close {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: background-color var(--component-motion-fast), color var(--component-motion-fast);
}

.tm-close:hover,
.tm-close:focus-visible {
  background: var(--bg-soft);
  color: var(--ink);
}

.tm-close:focus-visible {
  outline: 0;
  box-shadow: none;
}

.tm-close svg {
  width: 18px;
  height: 18px;
}

.tm-body {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 0;
  padding: 20px 22px 8px;
  overflow-y: auto;
}

.tm-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

fieldset.tm-field {
  min-inline-size: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.tm-label-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.tm-label {
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.tm-req {
  margin-left: 2px;
  color: var(--state-danger);
}

.tm-opt {
  margin-left: 4px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.cf-input-wrap,
.cf-textarea-wrap,
.tm-count-input,
.tm-count-textarea {
  position: relative;
}

.tm-count-input .tm-input {
  padding-right: 72px;
}

.tm-count-textarea .tm-textarea {
  padding-right: 68px;
  padding-bottom: 28px;
}

.tm-input,
.tm-textarea {
  box-sizing: border-box;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  transition: border-color var(--component-motion-fast), box-shadow var(--component-motion-fast);
}

.tm-textarea {
  min-height: 96px;
  resize: vertical;
}

.tm-input::placeholder,
.tm-textarea::placeholder {
  color: var(--muted);
}

.tm-input:focus,
.tm-textarea:focus {
  border-color: var(--ink-soft);
  outline: 0;
}

.tm-input:focus-visible,
.tm-textarea:focus-visible {
  border-color: var(--ink-soft);
  outline: 0;
}

.tm-input.is-error,
.tm-input.is-error:focus,
.tm-textarea.is-error,
.tm-textarea.is-error:focus {
  border-color: var(--state-danger);
}

.cf-input-count,
.cf-textarea-count {
  position: absolute;
  color: var(--muted-2);
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

.cf-input-count {
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
}

.cf-textarea-count {
  right: 10px;
  bottom: 10px;
}

.cf-input-count.is-near,
.cf-textarea-count.is-near {
  color: var(--state-warning);
}

.cf-input-count.is-max,
.cf-textarea-count.is-max {
  color: var(--state-danger);
}

.tm-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}

.tm-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2px;
}

.tm-check {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--paper);
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 14px;
  cursor: pointer;
  transition: background-color var(--component-motion-fast), border-color var(--component-motion-fast), color var(--component-motion-fast);
}

.tm-check:hover {
  border-color: var(--muted-2);
  background: var(--bg-soft);
  color: var(--ink);
}

.tm-check input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.tm-check-box {
  display: grid;
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  place-items: center;
  border: 1px solid var(--muted-2);
  border-radius: 3px;
  background: var(--paper);
}

.tm-check-box::after {
  width: 8px;
  height: 4px;
  border-bottom: 1.5px solid var(--paper);
  border-left: 1.5px solid var(--paper);
  content: "";
  opacity: 0;
  transform: translateY(-1px) rotate(-45deg);
}

.tm-check:has(input:checked) {
  border-color: var(--accent-soft);
  background: var(--ai-tint);
  color: var(--ink);
}

.tm-check input:checked + .tm-check-box {
  border-color: var(--accent);
  background: var(--accent);
}

.tm-check input:checked + .tm-check-box::after { opacity: 1; }
.tm-check:has(input:focus-visible) { outline: 2px solid var(--component-focus-ring); outline-offset: 2px; }
.tm-field.is-error .tm-checks { outline: 1px solid var(--state-danger); outline-offset: 4px; border-radius: var(--radius); }

@media (max-width: 767px) {
  .text-content-title { font-size: clamp(38px, 10vw, 52px); line-height: 1.08; }
  .text-title-h2 { font-size: clamp(30px, 8vw, 36px); line-height: 1.15; }
}

.tm-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 14px;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--component-motion-fast), color var(--component-motion-fast), border-color var(--component-motion-fast);
}

.tm-chip .field-tag-ico {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
}

.tm-chip:hover {
  border-color: var(--muted-2);
  background: var(--bg-soft);
  color: var(--ink);
}

.tm-chip:focus-visible {
  border-color: var(--ink-soft);
  outline: 0;
}

.tm-chip.is-active,
.tm-chip.is-active:hover {
  border-color: var(--muted-2);
  background: var(--bg-soft);
  color: var(--ink);
  font-weight: 500;
}

.tm-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 22px 18px;
}

.tm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--component-control-height-md);
  padding: 0 14px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color var(--component-motion-fast), color var(--component-motion-fast), border-color var(--component-motion-fast), opacity var(--component-motion-fast);
}

.tm-btn-ghost {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
}

.tm-btn-ghost:hover:not(:disabled) {
  background: var(--bg-soft);
  color: var(--ink);
}

.tm-btn-primary {
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.tm-btn-primary:hover:not(:disabled) {
  border-color: var(--ink-soft);
  background: var(--ink-soft);
}

.tm-btn-danger {
  border: 1px solid var(--state-danger);
  background: var(--paper);
  color: var(--state-danger);
}

.tm-btn-danger:hover:not(:disabled) {
  border-color: var(--state-danger-strong);
  background: var(--state-danger);
  color: var(--paper);
}

.tm-btn-danger:focus-visible {
  outline-color: color-mix(in srgb, var(--state-danger) 28%, transparent);
}

.tm-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Toast: the source library's success, warning and error variants. */
.app-toast {
  position: fixed;
  top: 26px;
  left: 50%;
  z-index: 10000;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  max-width: min(560px, 90vw);
  padding: 10px 18px 10px 14px;
  border-radius: var(--12px);
  background: var(--ink);
  box-shadow: var(--component-toast-shadow);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -14px);
  transition: opacity var(--component-motion-toast), transform var(--component-motion-toast);
}

.app-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.app-toast-ico {
  display: inline-flex;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

.app-toast-ico svg {
  width: 100%;
  height: 100%;
}

.app-toast-msg {
  min-width: 0;
}

.app-toast.success .app-toast-ico {
  color: var(--state-success);
}

.app-toast.warning .app-toast-ico {
  color: var(--state-warning);
}

.app-toast.error .app-toast-ico {
  color: var(--state-error);
}

body.has-open-dialog {
  overflow: hidden;
}

@keyframes tm-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes tm-panel-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 599px) {
  .tm-overlay {
    padding: 12px;
  }

  .tm-panel {
    max-height: calc(100vh - 24px);
  }

  .tm-header {
    padding-inline: 16px;
  }

  .tm-body {
    padding-inline: 16px;
  }

  .tm-footer {
    padding-inline: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn-link::after,
  .tm-overlay,
  .tm-panel,
  .app-toast {
    animation: none;
    transition-duration: 0.01ms;
  }
}