/* ── Chmod Calculator page styles ── */

.chm-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
.chm-card + .chm-card {
  margin-top: var(--space-5);
}
.chm-error[hidden] {
  display: none;
}

.chm-io {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.chm-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.chm-field label {
  font-size: 14px;
  color: var(--text-2);
}
#chm-tool .chm-big-input {
  font-family: var(--mono);
  font-size: 28px;
  letter-spacing: 0.08em;
  padding: 10px 14px;
  width: 100%;
  box-sizing: border-box;
}
#chm-tool .chm-big-input[aria-invalid="true"] {
  border-color: rgba(239, 68, 68, 0.6);
}

.chm-hint {
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-3);
}

.chm-error {
  margin: var(--space-4) 0 0;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #dc2626;
  font-size: 13px;
}

.chm-h2 {
  margin: var(--space-5) 0 var(--space-3);
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
}
.chm-h2-first {
  margin-top: 0;
}

.chm-table-wrap {
  overflow-x: auto;
}
.chm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.chm-table thead th {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-3);
  text-align: center;
  padding: 0 6px 8px;
}
.chm-table tbody th {
  text-align: left;
  font-weight: 500;
  color: var(--text);
  padding: 10px 8px 10px 0;
  white-space: nowrap;
}
.chm-table td {
  text-align: center;
  padding: 6px;
  border-top: 1px solid var(--border);
}
.chm-table tbody th {
  border-top: 1px solid var(--border);
}
.chm-digit {
  font-family: var(--mono);
  font-size: 22px;
  color: var(--accent);
  min-width: 2ch;
}

/* Checkboxes: native input kept for keyboard and screen readers, drawn box on top */
.chm-check,
.chm-special {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  min-height: 44px;
}
.chm-check input,
.chm-special input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
}
.chm-box {
  display: inline-block;
  width: 26px;
  height: 26px;
  flex: none;
  border: 1.5px solid var(--border-strong, var(--text-3));
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: background 0.12s, border-color 0.12s;
  position: relative;
}
.chm-check input:checked + .chm-box,
.chm-special input:checked + .chm-box {
  background: var(--accent);
  border-color: var(--accent);
}
.chm-check input:checked + .chm-box::after,
.chm-special input:checked + .chm-box::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 3px;
  width: 6px;
  height: 12px;
  border: solid #fff;
  border-width: 0 2.5px 2.5px 0;
  transform: rotate(45deg);
}
.chm-check input:focus-visible + .chm-box,
.chm-special input:focus-visible + .chm-box {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.chm-specials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  margin-bottom: var(--space-2);
}

.chm-cmd-opts {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: var(--space-3) var(--space-5);
  margin-bottom: var(--space-5);
}
.chm-field-file {
  flex: 1 1 220px;
}
.chm-field-file input {
  font-family: var(--mono);
  font-size: 16px;
}

.chm-cmd + .chm-cmd {
  margin-top: var(--space-4);
}
.chm-kicker {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-3);
  margin-bottom: 6px;
}
.chm-cmd-row {
  display: flex;
  align-items: stretch;
  gap: var(--space-2);
}
.chm-code {
  flex: 1 1 auto;
  min-width: 0;
  display: block;
  font-family: var(--mono);
  font-size: 15px;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow-wrap: anywhere;
  word-break: break-all;
}
.chm-copy {
  flex: none;
  min-width: 88px;
}
.chm-copy.is-copied {
  border-color: var(--accent);
  color: var(--accent);
}

.chm-summary {
  margin: 0;
  padding-left: 1.2em;
  line-height: 1.6;
}

.chm-presets {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-2);
}
.chm-preset {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-align: left;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
  min-height: 44px;
}
.chm-preset:hover {
  border-color: var(--accent);
}
.chm-preset:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.chm-preset.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.chm-preset-code {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--accent);
  flex: none;
}
.chm-preset-desc {
  font-size: 13px;
  line-height: 1.35;
  color: var(--text-2);
}

@media (max-width: 480px) {
  .chm-card {
    padding: var(--space-4);
  }
  #chm-tool .chm-big-input {
    font-size: 24px;
  }
  .chm-table thead th {
    font-size: 10px;
    padding: 0 2px 8px;
  }
  .chm-table td {
    padding: 4px 2px;
  }
  .chm-cmd-row {
    flex-direction: column;
  }
  .chm-copy {
    align-self: flex-start;
  }
}