/* Buttons and links */
.button {
  --button-bg: transparent;
  --button-fg: var(--color-ink);
  --button-border: var(--color-line-strong);

  min-height: var(--control-height);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  border: 1px solid var(--button-border);
  border-radius: var(--radius-xs);
  background: var(--button-bg);
  color: var(--button-fg);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.015em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--motion-fast) var(--ease-ui),
    color var(--motion-fast) var(--ease-ui),
    border-color var(--motion-fast) var(--ease-ui),
    opacity var(--motion-fast) var(--ease-ui);
}

.button__arrow {
  display: inline-block;
  transition: transform var(--motion-fast) var(--ease-ui);
}

.button:hover:not(:disabled) .button__arrow,
.button:focus-visible:not(:disabled) .button__arrow {
  transform: translateX(0.18rem);
}

.button--primary {
  --button-bg: var(--color-ink);
  --button-fg: var(--color-paper);
  --button-border: var(--color-ink);
}

.button--primary:hover:not(:disabled) {
  --button-bg: var(--project-accent);
  --button-border: var(--project-accent);
}

.button--outline:hover:not(:disabled) {
  --button-bg: var(--color-ink);
  --button-fg: var(--color-paper);
  --button-border: var(--color-ink);
}

.button--on-dark {
  --button-bg: var(--color-paper);
  --button-fg: var(--color-ink);
  --button-border: var(--color-paper);
}

.button:disabled,
.button[aria-disabled="true"] {
  opacity: 0.42;
  cursor: not-allowed;
}

.text-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--touch-min);
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}

.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.42rem;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--motion-fast) var(--ease-ui);
}

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

.text-link__arrow {
  transition: transform var(--motion-fast) var(--ease-ui);
}

.text-link:hover .text-link__arrow,
.text-link:focus-visible .text-link__arrow {
  transform: translateX(0.16rem);
}

/* Forms */
.form-stack {
  display: grid;
  gap: var(--space-6);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6) var(--grid-gap);
}

.field {
  min-width: 0;
}

.field--full {
  grid-column: 1 / -1;
}

.field__label,
.field__legend {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--color-ink);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.field__required {
  color: var(--color-text-secondary);
}

.field__hint,
.field__message {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  line-height: 1.45;
  color: var(--color-text-secondary);
}

.field__message--error {
  color: var(--color-danger);
}

.field__message--success {
  color: var(--color-success);
}

.field__control,
.field__select,
.field__textarea {
  width: 100%;
  min-height: var(--control-height);
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--color-line-strong);
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: var(--color-ink);
  font-size: 1rem;
  line-height: 1.4;
  transition: border-color var(--motion-fast) var(--ease-ui);
}

.field__control::placeholder,
.field__textarea::placeholder {
  color: #85847E;
  opacity: 1;
}

.field__control:hover,
.field__select:hover,
.field__textarea:hover {
  border-color: var(--color-ink);
}

.field__control:focus,
.field__select:focus,
.field__textarea:focus {
  border-bottom-color: var(--color-ink);
  border-bottom-width: 2px;
}

.field__textarea {
  min-height: 7.5rem;
  padding-block: var(--space-3);
  resize: vertical;
}

.field__select {
  appearance: none;
  padding-right: 2rem;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--color-ink) 50%),
    linear-gradient(135deg, var(--color-ink) 50%, transparent 50%);
  background-position:
    calc(100% - 0.8rem) 52%,
    calc(100% - 0.5rem) 52%;
  background-size: 0.3rem 0.3rem, 0.3rem 0.3rem;
  background-repeat: no-repeat;
}

.field[data-state="error"] .field__control,
.field[data-state="error"] .field__select,
.field[data-state="error"] .field__textarea {
  border-bottom-color: var(--color-danger);
}

.field[data-state="success"] .field__control,
.field[data-state="success"] .field__select,
.field[data-state="success"] .field__textarea {
  border-bottom-color: var(--color-success);
}

.field__control:disabled,
.field__select:disabled,
.field__textarea:disabled {
  opacity: 0.48;
  cursor: not-allowed;
}

.choice-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
}

.choice {
  position: relative;
  display: inline-flex;
  align-items: flex-start;
  gap: var(--space-3);
  min-height: var(--touch-min);
  padding-block: var(--space-2);
  color: var(--color-ink);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  cursor: pointer;
}

.choice__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.choice__mark {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  margin-top: 0.08rem;
  border: 1px solid var(--color-line-strong);
  background: transparent;
  transition:
    background-color var(--motion-fast) var(--ease-ui),
    border-color var(--motion-fast) var(--ease-ui),
    box-shadow var(--motion-fast) var(--ease-ui);
}

.choice--radio .choice__mark {
  border-radius: 50%;
}

.choice__input:checked + .choice__mark {
  border-color: var(--color-ink);
  background: var(--color-ink);
  box-shadow: inset 0 0 0 3px var(--color-paper);
}

.choice:not(.choice--radio) .choice__input:checked + .choice__mark {
  box-shadow: inset 0 0 0 2px var(--color-paper);
}

.choice__input:focus-visible + .choice__mark {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* Rows */
.editorial-list {
  border-top: 1px solid var(--color-line);
}

.editorial-row {
  display: grid;
  grid-template-columns: minmax(2.75rem, 0.7fr) minmax(0, 5fr) minmax(7rem, 1.4fr) auto;
  gap: var(--grid-gap);
  align-items: center;
  min-height: 5.25rem;
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
}

.editorial-row__index,
.editorial-row__meta {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  line-height: 1.3;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.editorial-row__title {
  font-size: clamp(1.625rem, 3vw, 3.25rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.035em;
}

.editorial-row__action {
  font-size: 1.125rem;
  transition: transform var(--motion-fast) var(--ease-ui);
}

.editorial-row:hover .editorial-row__action,
.editorial-row:focus-visible .editorial-row__action {
  transform: translateX(0.2rem);
}

/* Dialogs */
.ui-dialog {
  width: min(32.5rem, calc(100vw - 2rem));
  max-height: calc(100dvh - 2rem);
  margin: auto;
  padding: 0;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: var(--color-paper);
  color: var(--color-ink);
  box-shadow: none;
  overflow: auto;
}

.ui-dialog::backdrop {
  background: rgba(8, 8, 8, 0.34);
}

.ui-dialog[open] {
  animation: modal-in var(--motion-medium) var(--ease-standard) both;
}

.ui-dialog--drawer {
  width: min(35rem, 90vw);
  height: 100dvh;
  max-height: 100dvh;
  margin: 0 0 0 auto;
  border-width: 0 0 0 1px;
  border-radius: 0;
}

.ui-dialog--drawer[open] {
  animation-name: drawer-in;
}

.ui-dialog__inner {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: clamp(1.75rem, 3vw, 2.5rem);
}

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

.ui-dialog__close {
  min-width: var(--touch-min);
  min-height: var(--touch-min);
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0;
  background: transparent;
  color: var(--color-ink);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
}

.ui-dialog__body {
  padding-block: var(--space-7);
}

.ui-dialog__footer {
  margin-top: auto;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-line);
}

@keyframes modal-in {
  from { opacity: 0; transform: translateY(0.75rem); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes drawer-in {
  from { opacity: 0; transform: translateX(2rem); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Details / FAQ */
.faq {
  border-top: 1px solid var(--color-line);
}

.faq__item {
  border-bottom: 1px solid var(--color-line);
}

.faq__summary {
  min-height: 4.75rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-5);
  align-items: center;
  padding-block: var(--space-4);
  list-style: none;
  cursor: pointer;
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.faq__summary::-webkit-details-marker {
  display: none;
}

.faq__icon::before {
  content: "+";
}

.faq__item[open] .faq__icon::before {
  content: "-";
}

.faq__answer {
  width: min(100%, 43.75rem);
  padding: 0 0 var(--space-6);
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
  line-height: 1.55;
}

/* Generic reveal primitive */
[data-reveal] {
  opacity: 0;
  transform: translateY(0.75rem);
  transition:
    opacity var(--motion-reveal) var(--ease-standard),
    transform var(--motion-reveal) var(--ease-standard);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* Status / feedback */
.notice {
  padding: var(--space-4) var(--space-5);
  border-left: 2px solid var(--color-ink);
  background: var(--color-mist);
  color: var(--color-ink);
  font-size: var(--font-size-sm);
}

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

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

@media (max-width: 56.1875rem) {
  .editorial-row {
    grid-template-columns: 2.5rem minmax(0, 1fr) auto;
  }

  .editorial-row__meta {
    display: none;
  }
}

@media (max-width: 37.4375rem) {
  .button {
    min-height: 3rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .field--full {
    grid-column: auto;
  }

  .editorial-row {
    grid-template-columns: 2rem minmax(0, 1fr) auto;
    gap: var(--space-3);
    min-height: 4.5rem;
  }

  .editorial-row__title {
    font-size: clamp(1.375rem, 7vw, 1.75rem);
  }

  .ui-dialog,
  .ui-dialog--drawer {
    width: 100vw;
    max-width: none;
    height: 100dvh;
    max-height: 100dvh;
    border: 0;
    border-radius: 0;
  }

  .ui-dialog__inner {
    padding: 1.125rem;
  }
}

/* Phase 4K: landscape phones / coarse pointers keep dialogs as true mobile surfaces. */
@media (pointer: coarse) and (max-height: 31.25rem) {
  .ui-dialog,
  .ui-dialog--drawer {
    width: 100vw;
    max-width: none;
    height: 100dvh;
    max-height: 100dvh;
    margin: 0;
    border: 0;
    border-radius: 0;
  }
}