/* ===========================================================
   Shared tool components — used by every tool, not just one.
   Card (.ar-panel), fields, buttons, and the two-column layout
   below started life in the Aspect Ratio Calculator but apply
   to any tool; keep new shared pieces here rather than
   duplicating them per tool.
   =========================================================== */

.tool-header {
  margin-bottom: var(--space-6);
}

.tool-header__title {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 2rem;
  color: var(--text-primary);
  margin: 0 0 var(--space-2);
}

.tool-header__subtitle {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.98rem;
}

.ar-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

@media (max-width: 900px) {
  .ar-layout {
    grid-template-columns: 1fr;
  }
}

.ar-panel {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-5);
}

.ar-panel--preview {
  display: flex;
  flex-direction: column;
}

.field-group__title {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin: 0 0 var(--space-3);
}

.field-group__title--accent {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
}

.proportion {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.field-row {
  display: flex;
  gap: var(--space-3);
}

.field-row .field {
  flex: 1;
  min-width: 0;
}

.field-row--with-swap .field--shrink {
  flex: 0.85;
}

.field-row--with-swap .field--swap {
  flex: 0 0 auto;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--space-4);
}

.field:last-child {
  margin-bottom: 0;
}

.field label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.field input,
.field select {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 9px 11px;
  border: 1px solid var(--border-subtle-strong);
  border-radius: var(--radius-sm);
  background: var(--input-bg);
  color: var(--text-primary);
  width: 100%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.field select {
  font-family: var(--font-ui);
}

.field input[inputmode="decimal"],
.field input[inputmode="numeric"],
.field input.align-right {
  text-align: right;
}

.field input::placeholder {
  color: var(--text-tertiary);
  font-family: var(--font-ui);
}

.field input:hover,
.field select:hover {
  border-color: rgba(255, 255, 255, 0.16);
}

.field input:focus-visible,
.field select:focus-visible {
  outline: none;
  border-color: var(--accent);
  background: rgba(46, 230, 197, 0.04);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background: var(--input-bg);
  border: 1px solid var(--border-subtle-strong);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.icon-btn:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.24);
}

.icon-btn:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.percent-input {
  display: flex;
  align-items: stretch;
}

.percent-input input {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  flex: 1;
}

.percent-input__suffix {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle-strong);
  border-left: none;
  border-top-right-radius: var(--radius-sm);
  border-bottom-right-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
}

.ratio-readout {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: var(--space-5);
}

.ratio-readout__label {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.ratio-readout__value {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 500;
  color: var(--accent);
  line-height: 1;
  text-shadow: 0 0 24px var(--accent-glow);
}

.preview-stage {
  position: relative;
  flex: 1;
  min-height: 280px;
  background: repeating-linear-gradient(0deg, transparent, transparent 19px, rgba(255, 255, 255, 0.025) 19px, rgba(255, 255, 255, 0.025) 20px),
    repeating-linear-gradient(90deg, transparent, transparent 19px, rgba(255, 255, 255, 0.025) 19px, rgba(255, 255, 255, 0.025) 20px),
    var(--card-bg-raised);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

.preview-box,
.preview-box--original {
  position: absolute;
  border-radius: 2px;
  transition: width var(--transition-base), height var(--transition-base), left var(--transition-base), top var(--transition-base);
}

.preview-box {
  background: rgba(46, 230, 197, 0.07);
  border: 2px solid var(--accent);
  box-shadow: 0 0 30px -4px var(--accent-glow), 0 0 0 1px rgba(46, 230, 197, 0.15);
}

.preview-box--original {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.dim-line {
  position: absolute;
  color: var(--text-tertiary);
}

.dim-line--h {
  border-top: 1px solid var(--border-subtle-strong);
}

.dim-line--h::before,
.dim-line--h::after {
  content: "";
  position: absolute;
  top: -4px;
  width: 1px;
  height: 8px;
  background: var(--border-subtle-strong);
}

.dim-line--h::before {
  left: 0;
}

.dim-line--h::after {
  right: 0;
}

.dim-line--h span {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  white-space: nowrap;
  color: var(--text-secondary);
}

.dim-line--v {
  border-left: 1px solid var(--border-subtle-strong);
}

.dim-line--v::before,
.dim-line--v::after {
  content: "";
  position: absolute;
  left: -4px;
  width: 8px;
  height: 1px;
  background: var(--border-subtle-strong);
}

.dim-line--v::before {
  top: 0;
}

.dim-line--v::after {
  bottom: 0;
}

.dim-line--v span {
  position: absolute;
  left: -10px;
  top: 50%;
  transform: translate(-100%, -50%);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  white-space: nowrap;
  color: var(--text-secondary);
}

.results {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.results__primary {
  min-width: 0;
}

.results__final {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--accent);
  line-height: 1.2;
  text-shadow: 0 0 20px var(--accent-glow);
}

.results__meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

.results__actions {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.results__copy-group {
  display: flex;
  gap: var(--space-2);
}

.btn-copy {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--input-bg);
  border: 1px solid var(--border-subtle-strong);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.btn-copy svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  fill: currentColor;
}

.btn-copy:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.24);
}

.btn-copy:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.btn-copy--all {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.btn-copy--all:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.results__unit {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.field--inline {
  flex-direction: row;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: 0;
}

.field--inline label {
  white-space: nowrap;
}

.field--inline select {
  width: auto;
}

@media (max-width: 700px) {
  .results {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===========================================================
   PDF Splitter  (.tool-pdf-splitter)
   =========================================================== */

.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 11px 18px;
  cursor: pointer;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast), background var(--transition-fast), opacity var(--transition-fast);
}

.btn-primary svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  fill: currentColor;
}

.btn-primary:hover {
  background: var(--accent-strong);
  box-shadow: 0 0 24px -6px var(--accent-glow);
}

.btn-primary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.btn-primary:disabled {
  cursor: not-allowed;
  opacity: 0.4;
  box-shadow: none;
}

.btn-primary--small {
  padding: 8px 14px;
  font-size: 0.82rem;
}

#ps-download-all {
  min-width: 152px;
}

.ar-panel--upload {
  display: flex;
  flex-direction: column;
}

.dropzone {
  flex: 1;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px dashed var(--border-subtle-strong);
  border-radius: var(--radius-md);
  background: var(--input-bg);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: rgba(255, 255, 255, 0.28);
  outline: none;
}

.dropzone.is-dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.dropzone__icon {
  width: 36px;
  height: 36px;
  color: var(--text-tertiary);
}

.dropzone__icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.dropzone__text {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin: 0;
}

.dropzone__hint {
  color: var(--text-tertiary);
  font-size: 0.76rem;
  margin: 0;
}

.file-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--input-bg);
  border: 1px solid var(--border-subtle-strong);
  border-radius: var(--radius-sm);
}

.file-info__body {
  min-width: 0;
  flex: 1;
}

.file-info__name {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-info__meta {
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-size: 0.78rem;
  margin-top: 2px;
}

.field-error {
  color: #ff8a8a;
  font-size: 0.8rem;
  margin: var(--space-3) 0 0;
}

.mode-toggle {
  display: flex;
  gap: 6px;
  margin-bottom: var(--space-4);
}

.field .mode-toggle {
  margin-bottom: 0;
}

.mode-toggle__option {
  flex: 1;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--input-bg);
  border: 1px solid var(--border-subtle-strong);
  border-radius: var(--radius-sm);
  padding: 9px 10px;
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.mode-toggle__option:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.24);
}

.mode-toggle__option.is-active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.mode-toggle__option:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.split-hint {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin: -6px 0 var(--space-4);
  min-height: 1.1em;
}

.split-hint--error {
  color: #ff8a8a;
}

.progress-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 260px;
}

.progress-ring {
  position: relative;
  width: 120px;
  height: 120px;
}

.progress-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.progress-ring__track {
  fill: none;
  stroke: var(--border-subtle-strong);
  stroke-width: 8;
}

.progress-ring__fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 8;
  stroke-linecap: round;
  filter: drop-shadow(0 0 8px var(--accent-glow));
  transition: stroke-dashoffset 160ms ease;
}

.progress-ring__percent {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--text-primary);
}

.progress-view__status {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.file-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--input-bg);
  border: 1px solid var(--border-subtle-strong);
  border-radius: var(--radius-sm);
}

.file-row__name {
  font-family: var(--font-mono);
  color: var(--text-primary);
  font-size: 0.88rem;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-row__size {
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-size: 0.82rem;
  flex-shrink: 0;
}

.info-note {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--input-bg);
  border: 1px solid var(--border-subtle-strong);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  margin: 0 0 var(--space-4);
  line-height: 1.5;
}