/* ═══════════════════════════════════════════
   PEPPY PDF TOOLS — style.css
═══════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
  --page-bg:  #f4f4f5;
  --bg:       #ffffff;
  --bg2:      #f0f0f0;
  --bg3:      #f8f8f8;
  --border:   #d4d4d4;
  --text:     #1e1e1e;
  --text2:    #555555;
  --accent:   #5646F5;
  --accent2:  #4535e0;
  --accent-light: rgba(86,70,245,0.10);
  --sidebar:  #ececf1;
  --surface:  #ffffff;
  --surface2: #f0f0f0;
  --danger:   #e05252;
  --success:  #4caf50;
  --warn:     #f59e0b;
}

[data-theme="dark"] {
  --page-bg:  #141416;
  --bg:       #1e1e1e;
  --bg2:      #252526;
  --bg3:      #2d2d30;
  --border:   #3e3e42;
  --text:     #cccccc;
  --text2:    #888888;
  --accent:   #8b83f7;
  --accent2:  #5646F5;
  --accent-light: rgba(139,131,247,0.12);
  --sidebar:  #252526;
  --surface:  #1e1e1e;
  --surface2: #252526;
  --danger:   #f07070;
  --success:  #6bcf6b;
  --warn:     #fbbf24;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Body ── */
body {
  font-family: 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background: var(--page-bg);
  font-size: 14px;
  color: var(--text);
}

/* ── Top Bar ── */
.top-bar { display: flex; align-items: center; gap: 12px; padding: 0 16px; height: 44px; background: #5646F5; color: #fff; flex-shrink: 0; z-index: 20; }
.top-bar-left { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.top-bar-back { color: rgba(255,255,255,0.85); text-decoration: none; font-size: 1.1rem; line-height: 1; }
.top-bar-back:hover { color: #fff; }
.top-bar-title { font-size: 0.95rem; font-weight: 600; white-space: nowrap; }
.top-bar-right { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.top-btn { background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.25); color: #fff; width: 32px; height: 32px; border-radius: 6px; cursor: pointer; font-size: 1rem; display: flex; align-items: center; justify-content: center; transition: background 0.15s; }
.top-btn:hover { background: rgba(255,255,255,0.3); }

/* ── App Body ── */
.app-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* ── Sidebar ── */
.sidebar {
  width: 210px;
  min-width: 180px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: hidden;
  flex-shrink: 0;
}

/* ── Sidebar Top Group Nav ── */
.sidebar-top-nav {
  display: flex;
  gap: 2px;
  padding: 7px 6px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--surface2);
}
.grp-nav-btn {
  flex: 1;
  padding: 6px 2px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  text-align: center;
  color: var(--text2);
  transition: background 0.15s;
  min-width: 0;
  background: none !important;
  border: 1px solid transparent !important;
  font-family: inherit;
}
.grp-nav-btn:hover  { background: var(--accent-light) !important; color: var(--accent); }
.grp-nav-btn.active { background: var(--accent-light) !important; border-color: var(--accent) !important; color: var(--accent); }

/* ── Sidebar Groups ── */
.sidebar-groups { flex: 1; overflow-y: auto; }

/* ── Group Header ── */
.grp-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px 5px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--text2);
  cursor: pointer;
  user-select: none;
  background: none !important;
  border: none !important;
  font-family: inherit;
  text-align: left;
  transition: color 0.15s;
}
.grp-hdr:hover { color: var(--accent) !important; }
.grp-chevron {
  font-size: 8px;
  flex-shrink: 0;
  margin-left: 4px;
  transition: transform 0.2s ease;
}
.sidebar-group.collapsed .grp-chevron { transform: rotate(-90deg); }
.sidebar-group.collapsed .grp-tools   { display: none; }
.sidebar-group + .sidebar-group { border-top: 1px solid var(--border); }

/* ── Tab Buttons ── */
.tab-btn {
  width: 100%;
  padding: 7px 12px 7px 22px;
  text-align: left;
  background: none !important;
  border: none !important;
  border-radius: 0;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  font-family: inherit;
  transition: background 0.12s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tab-btn:hover  { background: var(--accent-light) !important; color: var(--accent) !important; }
.tab-btn.active { background: var(--accent) !important; color: #fff !important; font-weight: 600; }

/* ── Tool Area ── */
.tool-area {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.tool-panel {
  display: none;
  flex-direction: column;
  gap: 14px;
  flex: 1;
  overflow-y: auto;
  padding: 22px 24px;
  min-height: 0;
}
.tool-panel.active { display: flex; }

.panel-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
  flex-shrink: 0;
}

/* ── Form Elements ── */
.form-group { display: flex; flex-direction: column; gap: 6px; flex-shrink: 0; }
.form-row   { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; flex-shrink: 0; }
.btn-row    { display: flex; gap: 8px; flex-wrap: wrap; flex-shrink: 0; align-items: center; }

.io-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.io-area {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px;
  font-family: 'Segoe UI', sans-serif;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  line-height: 1.5;
  resize: vertical;
  width: 100%;
}
.io-area:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }

/* ── Generic Buttons ── */
button {
  padding: 7px 16px;
  border: 1px solid var(--accent2);
  background: var(--accent);
  color: #fff;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  transition: background 0.15s, opacity 0.15s;
  white-space: nowrap;
}
button:hover { opacity: 0.88; }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-secondary {
  background: var(--bg2) !important;
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
}
.btn-secondary:hover { background: var(--bg3) !important; opacity: 1; }

.btn-danger {
  background: var(--danger) !important;
  border-color: var(--danger) !important;
  color: #fff !important;
}

select,
input[type="number"],
input[type="text"],
input[type="password"],
input[type="range"],
input[type="color"] {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  font-family: inherit;
}
select:focus,
input[type="number"]:focus,
input[type="text"]:focus,
input[type="password"]:focus { border-color: var(--accent); }

input[type="range"] { padding: 0; cursor: pointer; accent-color: var(--accent); }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text);
  user-select: none;
}

/* ── Status messages ── */
.tool-msg      { font-size: 12px; color: var(--accent); }
.tool-msg.err  { color: var(--danger); }
.tool-msg.ok   { color: var(--success); }
.tool-msg.warn { color: var(--warn); }

/* ── Drop zone ── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  color: var(--text2);
  font-size: 13px;
  transition: border-color 0.2s, background 0.2s;
  flex-shrink: 0;
  position: relative;
}
.drop-zone:hover,
.drop-zone.drag-over { border-color: var(--accent); background: var(--accent-light); color: var(--accent); }
.drop-zone input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.drop-zone-icon { font-size: 2rem; margin-bottom: 8px; }
.drop-zone strong { display: block; margin-bottom: 4px; font-size: 14px; color: var(--text); }

/* ── File list ── */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-shrink: 0;
}
.file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
}
.file-item-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-item-size { color: var(--text2); font-size: 11px; white-space: nowrap; }
.file-item-remove {
  background: none !important;
  border: none !important;
  color: var(--danger) !important;
  padding: 2px 6px;
  font-size: 14px;
  cursor: pointer;
  border-radius: 4px;
}
.file-item-remove:hover { background: rgba(224,82,82,0.12) !important; opacity: 1; }
.file-item-handle {
  cursor: grab;
  color: var(--text2);
  font-size: 16px;
  padding: 0 4px;
  user-select: none;
}
.file-item.drag-source { opacity: 0.4; }
.file-item.drag-over-item { border-color: var(--accent); background: var(--accent-light); }

/* ── Page grid (thumbnail viewer) ── */
.page-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  flex-shrink: 0;
}
.page-thumb {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
}
.page-thumb canvas {
  border: 2px solid var(--border);
  border-radius: 4px;
  display: block;
  transition: border-color 0.15s;
  max-width: 110px;
}
.page-thumb.selected canvas { border-color: var(--accent); }
.page-thumb-label {
  font-size: 11px;
  color: var(--text2);
}
.page-thumb.drag-source { opacity: 0.4; }
.page-thumb.drag-over-thumb canvas { border-color: var(--accent); border-style: dashed; }

/* ── Info box ── */
.info-box {
  background: var(--accent-light);
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--text);
  flex-shrink: 0;
}
.info-box strong { color: var(--accent); }

/* ── Progress bar ── */
.progress-wrap { background: var(--bg2); border-radius: 4px; overflow: hidden; height: 8px; flex-shrink: 0; }
.progress-bar  { height: 100%; background: var(--accent); width: 0%; transition: width 0.3s; }

/* ── PDF Viewer ── */
.viewer-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  flex-wrap: wrap;
}
.viewer-toolbar span { font-size: 12px; color: var(--text2); }
#viewer-canvas-wrap {
  flex: 1;
  overflow: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg3);
  padding: 16px;
  gap: 12px;
}
#viewer-canvas-wrap canvas {
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
  border-radius: 2px;
  display: block;
}

/* ── Redact canvas overlay ── */
#redact-wrap {
  position: relative;
  display: inline-block;
  cursor: crosshair;
  flex-shrink: 0;
}
#redact-canvas-bg,
#redact-canvas-overlay {
  display: block;
  max-width: 100%;
}
#redact-canvas-overlay {
  position: absolute;
  top: 0; left: 0;
}

/* ── Password strength ── */
.pw-strength-bar {
  height: 4px;
  border-radius: 2px;
  width: 100%;
  background: var(--border);
  overflow: hidden;
}
.pw-strength-fill {
  height: 100%;
  transition: width 0.3s, background 0.3s;
}

/* ── Hamburger menu button (hidden on desktop, shown on mobile) ── */
.menu-toggle { display: none; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}
.sidebar-overlay.active { display: block; }

/* ── Responsive: mobile sidebar drawer ── */
@media (max-width: 768px) {
  .menu-toggle { display: inline-flex; }
  .sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 260px;
    min-width: unset;
    height: 100vh;
    z-index: 100;
    transition: left 0.3s ease;
    box-shadow: 4px 0 20px rgba(0,0,0,0.3);
    border-right: none;
  }
  .sidebar.open { left: 0; }
  .sidebar-top-nav { flex-wrap: wrap; }
  .tool-panel { padding: 16px; }
  .btn-row { flex-wrap: wrap; gap: 8px; }
}

@media (max-width: 480px) {
  .top-bar-title { font-size: 0.85rem; }
  .top-bar { padding: 0 10px; height: 40px; }
  .tool-panel { padding: 12px 10px; }
  .panel-title { font-size: 1rem; }
  .drop-zone { padding: 24px 12px; }
  .file-list-item { padding: 6px 8px; font-size: 12px; }
}