/* =====================================================================
   Base64 Image Converter Pro — app.css
   Extends the shared design system (base.css). Colors derive ONLY from
   base.css CSS variables so dark + light themes both work.
   ===================================================================== */

/* ---- Theme toggle icon swap (sun in dark, moon in light) ---- */
[data-theme="light"] .icon-sun { display: none; }
.icon-moon { display: none; }
[data-theme="light"] .icon-moon { display: inline-block; }

/* ===================== Toolbar ===================== */
.toolbar-panel { padding: var(--space-4) var(--space-5); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-4);
}
.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}
.toolbar .spacer { flex: 1; }

/* ===================== Status badge ===================== */
#statusBadge .status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-muted); flex: none;
  transition: background var(--dur-2), box-shadow var(--dur-2);
}
#statusBadge.is-ready .status-dot { background: var(--success); box-shadow: 0 0 10px var(--success); }
#statusBadge.is-error {
  background: var(--danger-soft); color: var(--danger); border-color: transparent;
}
#statusBadge.is-error .status-dot { background: var(--danger); box-shadow: 0 0 10px var(--danger); }

/* ===================== Sections spacing ===================== */
#encodePane > section + section,
#decodePane > section + section {
  margin-top: var(--space-5);
}

/* ===================== Dropzone ===================== */
.dropzone-panel { padding: var(--space-6); }
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-align: center;
  padding: var(--space-10) var(--space-6);
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
  cursor: pointer;
  transition: border-color var(--dur-2), background var(--dur-2), transform var(--dur-1);
}
.dropzone:hover { border-color: var(--brand-500); background: var(--surface-2); }
.dropzone:focus-visible { outline: none; border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(99,102,241,.3); }
.dropzone.is-dragover {
  border-color: var(--brand-500);
  background: var(--gradient-brand-soft);
  transform: scale(1.005);
}
.dropzone svg { width: 40px; height: 40px; color: var(--text-muted); }
.dropzone p { margin: 0; }
.dropzone button { margin-top: var(--space-2); }

/* ===================== Result head (preview + meta) ===================== */
.result-head {
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1fr;
  gap: var(--space-6);
  align-items: start;
  margin-bottom: var(--space-5);
}
.preview-wrap {
  display: grid;
  place-items: center;
  min-height: 160px;
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(45deg, var(--surface-3) 25%, transparent 25%),
    linear-gradient(-45deg, var(--surface-3) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--surface-3) 75%),
    linear-gradient(-45deg, transparent 75%, var(--surface-3) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}
.preview-wrap img { max-width: 100%; max-height: 220px; display: block; border-radius: var(--radius-sm); }
.preview-wrap img[src=""],
.preview-wrap img:not([src]) { display: none; }

.file-meta { font-size: 13.5px; }
.file-meta .row { gap: var(--space-3); }
.file-meta span:last-child { text-align: right; }

/* ===================== Output grid ===================== */
.output-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.output-block {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface);
}
.output-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
}
.output-block-head h3 {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.output-area {
  border: none;
  border-radius: 0;
  background: transparent;
  resize: vertical;
  min-height: 90px;
  font-size: 12.5px;
  line-height: 1.6;
  word-break: break-all;
}
.output-area:focus { box-shadow: none; background: transparent; }

/* ===================== Decode pane ===================== */
.decode-input {
  min-height: 160px;
  font-size: 13px;
  line-height: 1.6;
  word-break: break-all;
}
.decode-error {
  margin: var(--space-4) 0 0;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 13.5px;
}

/* ===================== Shortcuts modal table ===================== */
.shortcut-table { width: 100%; border-collapse: collapse; }
.shortcut-table td {
  padding: 10px 4px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.shortcut-table tr:last-child td { border-bottom: none; }
.shortcut-table td:last-child { text-align: right; white-space: nowrap; }
.shortcut-table kbd + kbd { margin-left: 4px; }

/* ===================== Responsive ===================== */
@media (max-width: 860px) {
  .result-head { grid-template-columns: 1fr; }
  .output-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  #statusBadge { display: none; }
  .toolbar .spacer { display: none; }
  .toolbar-group { width: 100%; }
  #modeSwitch { width: 100%; }
  #modeSwitch button { flex: 1; }
}

@media (max-width: 460px) {
  .dropzone { padding: var(--space-8) var(--space-4); }
  .file-meta { font-size: 12.5px; }
}