/* ============================================================
 * File: css/tools/_shared.css
 * Module: Tool CSS — Shared patterns
 * Purpose: Panel system + shared tool patterns used across tools.
 * Depends on: variables.css, themes.css, components.css
 * ============================================================ */

/* ------------------------------------------------------------
 * WORKSPACE — top-level tool body wrapper
 * ------------------------------------------------------------ */

.dt-workspace {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-4);
}

/* ------------------------------------------------------------
 * TOOLBAR — top action row
 * ------------------------------------------------------------ */

.dt-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.dt-toolbar__group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.dt-toolbar__label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  white-space: nowrap;
}

/* ------------------------------------------------------------
 * PANEL — main container for input/output
 * ------------------------------------------------------------ */

.dt-panel {
  display: flex;
  flex-direction: column;

  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-surface);
  overflow: hidden;

  transition: border-color var(--duration-fast) var(--ease-standard),
              box-shadow   var(--duration-fast) var(--ease-standard);
}

.dt-panel:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

/* Header */

.dt-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);

  padding: 10px var(--space-4);
  min-height: 42px;

  background-color: var(--color-bg-subtle);
  border-bottom: var(--border-thin) solid var(--color-border);
}

.dt-panel__title {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);

  font-size: 11px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.dt-panel__actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

/* Body */

.dt-panel__body {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* Footer */

.dt-panel__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);

  padding: 8px var(--space-4);
  min-height: 32px;

  background-color: var(--color-bg-subtle);
  border-top: var(--border-thin) solid var(--color-border);

  font-size: 11px;
  color: var(--color-text-subtle);
}

/* ------------------------------------------------------------
 * EDITOR PANEL — borderless textarea/input/code inside panel
 * ------------------------------------------------------------ */

.dt-panel--editor .dt-textarea,
.dt-panel--editor .dt-input,
.dt-panel--editor .dt-code {
  border: none;
  border-radius: 0;
  box-shadow: none;
  background-color: transparent;
  min-height: 160px;
  padding: var(--space-4);
  width: 100%;
}

.dt-panel--editor .dt-textarea,
.dt-panel--editor .dt-input {
  resize: vertical;
}

.dt-panel--editor .dt-textarea:focus,
.dt-panel--editor .dt-input:focus,
.dt-panel--editor .dt-code:focus {
  outline: none;
  box-shadow: none;
  border: none;
}

/* ------------------------------------------------------------
 * CODE BLOCK — used by JWT, Hash
 * ------------------------------------------------------------ */

.dt-code {
  display: block;
  width: 100%;

  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-border);
  background-color: var(--color-input-bg);

  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  line-height: var(--lh-snug);
  color: var(--color-text);

  white-space: pre;
  overflow: auto;
  max-height: 240px;
  tab-size: 2;
}

/* ------------------------------------------------------------
 * SECTION (title + actions above a block)
 * ------------------------------------------------------------ */

.dt-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.dt-section__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

/* ------------------------------------------------------------
 * RESULT CARD — used by Timestamp, Color
 * ------------------------------------------------------------ */

.dt-result {
  display: flex;
  flex-direction: column;
  gap: 2px;

  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

.dt-result__row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-border);
}
.dt-result__row:last-child { border-bottom: none; }

.dt-result__label {
  flex: 0 0 auto;
  min-width: 84px;

  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

.dt-result__value {
  flex: 1 1 auto;
  min-width: 0;

  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text);

  word-break: break-all;
}

/* ------------------------------------------------------------
 * SEGMENTED CONTROL — used by Timestamp
 * ------------------------------------------------------------ */

.dt-segmented {
  display: inline-flex;
  align-items: center;
  padding: 2px;
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-border);
  background-color: var(--color-surface-2);
  gap: 2px;
}

.dt-segmented > button {
  appearance: none;
  background: transparent;
  border: none;
  cursor: pointer;

  height: 24px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);

  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  white-space: nowrap;

  transition: background-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard);
}

.dt-segmented > button:hover {
  color: var(--color-text);
}

.dt-segmented > button[aria-pressed='true'] {
  background-color: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-xs);
}
/* ------------------------------------------------------------
 * PHASE 2A: shared panel kit pieces (js/ui/panel.js)
 * ------------------------------------------------------------ */

/* Stats: one format everywhere ("N chars · M lines") */
.dt-panel__stats {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-subtle);
  white-space: nowrap;
}

/* Keyboard hint on the right side of a panel foot */
.dt-panel__hint {
  font-size: 11px;
  color: var(--color-text-subtle);
  white-space: nowrap;
}

/* Inline error slot (the alert inside carries the styling) */
.dt-panel__error {
  display: flex;
  flex-direction: column;
}

/* A panel in its error state gets a danger frame */
.dt-panel--error {
  border-color: var(--color-danger);
}

.dt-panel--error:focus-within {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px var(--color-danger-soft);
}

/* Wrap toggle: outputs are soft-wrapped until data-wrap="off" */
.dt-panel--editor .dt-textarea[data-wrap='off'] {
  white-space: pre;
  overflow-x: auto;
}

.dt-panel__wrap-btn--off {
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

/* ------------------------------------------------------------
 * PHASE 2A: file drop (js/ui/filedrop.js)
 * ------------------------------------------------------------ */

.dt-filedrop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;

  padding: var(--space-5) var(--space-4);

  border: var(--border-thick) dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-subtle);

  cursor: pointer;
  text-align: center;

  transition: border-color var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard);
}

.dt-filedrop:hover {
  border-color: var(--color-accent);
}

.dt-filedrop--over {
  border-color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

.dt-filedrop--has-file {
  border-style: solid;
  border-color: var(--color-border);
}

.dt-filedrop__label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
}

.dt-filedrop__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text);
}