/* ============================================================
   base.css - reset, typography, layout primitives, form fields
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--foam);
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
  outline: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 650;
  line-height: 1.2;
  margin-block: 0 var(--sp-3);
  text-wrap: balance;
}

p {
  margin-block: 0 var(--sp-4);
}

a {
  color: var(--cobalt-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: inline-block;
}

svg {
  vertical-align: middle;
}

ul, ol {
  margin-block: 0 var(--sp-4);
  padding-inline-start: 1.25rem;
}

dl {
  margin: 0;
}

dt {
  color: var(--mist);
  font-size: var(--fs-sm);
}

dd {
  margin-inline-start: 0;
}

button {
  font: inherit;
  color: inherit;
}

/* Numeric and address rendering */
.num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum';
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* Crypto addresses always render LTR, even in RTL-adjacent contexts */
.deposit-address,
.review-address,
[data-address],
[data-refund-address] {
  direction: ltr;
  unicode-bidi: isolate;
  overflow-wrap: anywhere;
}

/* Focus */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* Accessibility helpers */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  inset-block-start: -3rem;
  inset-inline-start: var(--sp-4);
  z-index: 100;
  background: var(--cobalt);
  color: #fff;
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius-sm);
  transition: inset-block-start 120ms ease;
}

.skip-link:focus-visible {
  inset-block-start: var(--sp-3);
}

/* Layout shells */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

.shell--narrow {
  max-width: var(--shell-narrow);
}

.shell--widget {
  max-width: var(--shell-widget);
  margin-inline: auto;
}

.section {
  padding-block: var(--sp-7);
}

.section__title {
  font-size: var(--fs-2xl);
}

.section__lead {
  color: var(--mist);
  max-width: 42rem;
  margin-block-end: var(--sp-5);
}

.section__note {
  color: var(--mist);
  font-size: var(--fs-sm);
  margin-block-start: var(--sp-4);
}

.section__cta {
  margin-block-start: var(--sp-5);
}

.page-head {
  padding-block: var(--sp-7) 0;
}

.page-head__title {
  font-size: var(--fs-3xl);
}

.page-head__lead {
  color: var(--mist);
  font-size: var(--fs-lg);
  max-width: 44rem;
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.65rem 1.25rem;
  font-weight: 600;
  font-size: var(--fs-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.button:hover {
  text-decoration: none;
}

.button--primary {
  background: var(--cobalt);
  color: #fff;
}

.button--primary:hover {
  background: var(--cobalt-strong);
}

.button--primary:disabled {
  background: var(--hairline);
  color: var(--faint);
  cursor: not-allowed;
}

.button--secondary {
  background: var(--cobalt-soft);
  border-color: var(--hairline-2);
  color: var(--foam);
}

.button--secondary:hover {
  border-color: var(--cobalt);
}

.button--ghost {
  background: transparent;
  border-color: var(--hairline);
  color: var(--foam);
}

.button--ghost:hover {
  border-color: var(--hairline-2);
}

.button--large {
  padding: 0.85rem 1.75rem;
  font-size: var(--fs-md);
}

.button--small {
  padding: 0.4rem 0.85rem;
  font-size: var(--fs-xs);
}

.button--tiny {
  padding: 0.2rem 0.55rem;
  font-size: var(--fs-xs);
}

/* Fields */
.field {
  margin-block-end: var(--sp-4);
}

.field__label {
  display: block;
  font-size: var(--fs-sm);
  color: var(--mist);
  margin-block-end: var(--sp-2);
}

.field__input {
  width: 100%;
  background: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  color: var(--foam);
  padding: 0.7rem 0.9rem;
  font-size: var(--fs-md);
  transition: border-color 140ms ease;
}

.field__input::placeholder {
  color: var(--faint);
}

.field__input:hover {
  border-color: var(--hairline-2);
}

.field__input:focus-visible {
  border-color: var(--cobalt);
  box-shadow: none;
}

.field__error {
  color: var(--down);
  font-size: var(--fs-sm);
  margin-block: var(--sp-2) 0;
}

.field__note,
.field__meta {
  color: var(--mist);
  font-size: var(--fs-sm);
  margin-block: var(--sp-2) 0;
}

.field__meta strong {
  color: var(--foam);
}

.field--search {
  max-width: 24rem;
  margin-block-end: var(--sp-5);
}

.check {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
  margin-block: var(--sp-4);
  cursor: pointer;
  font-size: var(--fs-sm);
}

.check input {
  accent-color: var(--cobalt);
  width: 1.1rem;
  height: 1.1rem;
  margin-block-start: 0.15rem;
  flex: none;
}

/* Notices */
.notice {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--slate);
  padding: var(--sp-5);
  margin-block: var(--sp-4);
}

.notice__title {
  font-size: var(--fs-lg);
}

.notice--warning {
  border-color: rgba(227, 162, 74, 0.5);
  background: var(--warn-soft);
}

.notice--muted p:last-child,
.notice--warning p:last-child {
  margin-block-end: 0;
}

.empty-note {
  color: var(--mist);
  padding-block: var(--sp-5);
  text-align: center;
}

/* Signals */
.is-up { color: var(--up); }
.is-down { color: var(--down); }

/* Tables */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--slate);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

th, td {
  text-align: start;
  padding: 0.8rem 1rem;
  border-block-end: 1px solid var(--hairline);
  white-space: nowrap;
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-block-end: 0;
}

th {
  color: var(--mist);
  font-weight: 500;
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.num-col {
  text-align: end;
}

tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* Prose blocks (legal, informational) */
.prose-block {
  margin-block-end: var(--sp-6);
}

.prose-block h2 {
  font-size: var(--fs-xl);
}

.legal .prose-block {
  margin-block-end: var(--sp-5);
}

/* Disclosure */
.disclosure {
  color: var(--mist);
  font-size: var(--fs-sm);
  border-inline-start: 3px solid var(--sand);
  padding-inline-start: var(--sp-4);
  margin-block: var(--sp-5) var(--sp-4);
}

[hidden] {
  display: none !important;
}