/* ==========================================================================
   PDF Compressor — ToolsTurbo.com
   Theme: Light UI matching ToolsTurbo Brand Logo colors:
   - Primary Blue: #2563EB
   - Accent Purple: #7C3AED
   - Gradient: #2563EB to #7C3AED
   - Dark/Black Text: #161B33
   ========================================================================== */

:root {
  --tt-brand-blue: #2563EB;
  --tt-brand-blue-hover: #1D4ED8;
  --tt-brand-purple: #7C3AED;
  --tt-brand-purple-hover: #6D28D9;
  --tt-brand-gradient: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  --tt-brand-gradient-hover: linear-gradient(135deg, #1D4ED8 0%, #6D28D9 100%);
  --tt-brand-soft: rgba(37, 99, 235, 0.08);
  --tt-brand-border: rgba(37, 99, 235, 0.22);
  --tt-brand-purple-soft: rgba(124, 58, 237, 0.08);

  --tt-primary: var(--tt-brand-blue);
  --tt-primary-hover: var(--tt-brand-blue-hover);

  --tt-bg: #F8FAFC;
  --tt-card-bg: #FFFFFF;
  --tt-input-bg: #F8FAFC;
  --tt-border: #E2E8F0;
  --tt-border-strong: #CBD5E1;

  --tt-text: #161B33;
  --tt-text-muted: #64748B;

  --tt-danger: #DC2626;
  --tt-danger-soft: #FEF2F2;
  --tt-danger-border: #FCA5A5;
  --tt-success: #16A34A;
  --tt-success-soft: #F0FDF4;
  --tt-success-border: #BBF7D0;

  --tt-radius: 14px;
  --tt-radius-sm: 8px;
  --tt-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }

/* Grid Layout matching QR Code Generator */
.tt-generator-grid {
  display: grid;
  grid-template-columns: 1fr 390px;
  grid-template-areas: "config preview";
  gap: 28px;
  align-items: flex-start;
  margin-bottom: 24px;
  width: 100%;
}

@media (max-width: 799px) {
  .tt-generator-grid {
    grid-template-columns: 1fr;
    grid-template-areas: none;
    display: flex;
    flex-direction: column;
  }
}

.tt-unified-card {
  padding: 18px 20px 22px;
}
.tt-unified-card .tt-tabs-bar {
  margin: 18px 0 16px;
}
.tt-unified-card .tt-panel-card {
  padding: 14px 0 0;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.tt-config-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.tt-preview-col {
  position: -webkit-sticky;
  position: sticky;
  top: 15px;
  z-index: 20;
  width: 100%;
}

/* Card Surface */
.tt-card {
  background: var(--tt-card-bg);
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius);
  padding: 24px;
  box-shadow: 0 4px 20px -8px rgba(22, 27, 51, 0.08);
}

.tt-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--tt-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Dropzone */
.tt-dropzone {
  border: 2px dashed var(--tt-brand-border);
  border-radius: var(--tt-radius);
  padding: 38px 24px;
  text-align: center;
  background: var(--tt-brand-soft);
  cursor: pointer;
  transition: all 0.2s ease;
  outline: none;
}

.tt-dropzone:hover,
.tt-dropzone.is-dragover {
  border-color: var(--tt-brand-blue);
  background: rgba(37, 99, 235, 0.12);
  transform: translateY(-1px);
}

.tt-dropzone__icon {
  color: var(--tt-brand-blue);
  margin-bottom: 12px;
}

.tt-dropzone__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--tt-text);
  margin-bottom: 6px;
}

.tt-dropzone__hint {
  font-size: 0.88rem;
  color: var(--tt-text-muted);
}

.tt-dropzone__browse {
  color: var(--tt-brand-blue);
  font-weight: 600;
  text-decoration: underline;
}

/* Compact Dropzone for Space-Saving Design */
.tt-dropzone--compact {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 72px;
  text-align: left;
}

.tt-dropzone--compact .tt-dropzone__icon {
  margin-bottom: 0;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.tt-dropzone--compact .tt-dropzone__title {
  font-size: 0.96rem;
  margin-bottom: 2px;
}

.tt-dropzone--compact .tt-dropzone__hint {
  font-size: 0.8rem;
}

/* Space-Saving Horizontal Tabs Bar (100% Identical to Design Screenshot) */
.tt-tabs-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin: 18px 0 14px;
  padding: 0 2px;
  border-bottom: 2pt solid #dbdce0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 600px) {
  .tt-tabs-bar {
    justify-content: flex-start;
  }
}

.tt-tabs-bar::-webkit-scrollbar {
  display: none;
}

.tt-tab-btn {
  background: none;
  border: none;
  padding: 8px 2px 12px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--tt-text-muted);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  transition: color 0.15s ease;
  user-select: none;
}

.tt-tab-btn:hover {
  color: var(--tt-text);
}

.tt-tab-btn.active {
  color: var(--tt-text);
  font-weight: 700;
}

.tt-tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2pt;
  left: 0;
  right: 0;
  height: 2.5pt;
  background: linear-gradient(90deg, #2563eb 0%, #5045e5 50%, #7c3aed 100%);
  border-radius: 2px;
}

.tt-tab-panels {
  width: 100%;
}

.tt-tab-panel {
  display: none;
  width: 100%;
}

.tt-tab-panel.active {
  display: block;
}

.tt-panel-card {
  padding: 20px 24px;
  background: var(--tt-card-bg);
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius);
  box-shadow: 0 4px 20px -8px rgba(22, 27, 51, 0.08);
}

.tt-panel-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.tt-panel-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.tt-panel-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--tt-text);
  margin: 0;
}

.tt-panel-subtitle {
  font-size: 0.82rem;
  color: var(--tt-text-muted);
  margin: 3px 0 0;
}

/* DPI Quick Cards */
.tt-dpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

@media (max-width: 600px) {
  .tt-dpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tt-dpi-card {
  transition: all 0.18s ease;
  user-select: none;
}

.tt-dpi-card:hover {
  border-color: var(--tt-brand-blue) !important;
  background: rgba(37, 99, 235, 0.03);
}

.tt-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* File Queue — Clearly Highlighted Light Yellow Box with Noticeable PDF Icon */
.tt-queue {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tt-queue-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: #fefce8; /* Light yellow background */
  border: 1.5px solid #facc15; /* Noticeable yellow border */
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(234, 179, 8, 0.16), 0 1px 3px rgba(0, 0, 0, 0.04);
  font-size: 0.92rem;
  transition: all 0.2s ease;
  position: relative;
}

.tt-queue-item:hover {
  background: #fef9c3;
  border-color: #eab308;
  box-shadow: 0 6px 18px rgba(234, 179, 8, 0.24);
}

.tt-queue-pdf-badge {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 3px 6px rgba(229, 37, 42, 0.28));
}

.tt-queue-item__details {
  flex-grow: 1;
  min-width: 0;
}

.tt-queue-item__name {
  font-weight: 700;
  color: #1e293b;
  font-size: 0.98rem;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tt-queue-item__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}

.tt-queue-item__size {
  font-size: 0.8rem;
  font-weight: 600;
  color: #64748b;
}

.tt-queue-item__status {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.tt-queue-item__status.is-ready {
  background: #fef08a;
  color: #854d0e;
}

.tt-queue-item__status.is-compressed {
  background: #dcfce7;
  color: #166534;
}

.tt-queue-item__remove {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #fee2e2;
  color: #b91c1c;
  border: 1px solid #fca5a5;
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-left: auto;
  flex-shrink: 0;
}

.tt-queue-item__remove:hover {
  background: #ef4444;
  color: #ffffff;
  border-color: #ef4444;
}

/* Compression Quality Slider Card */
.tt-quality-slider-card {
  margin-top: 14px;
  padding: 14px 16px;
  background: #f8fafc;
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius-sm);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tt-quality-slider-header {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tt-quality-slider-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tt-quality-slider-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--tt-text);
}

.tt-quality-slider-badge {
  background: var(--tt-brand-gradient);
  color: #ffffff;
  padding: 3px 12px;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
  transition: all 0.15s ease;
}

.tt-quality-slider-desc {
  font-size: 0.76rem;
  color: var(--tt-text-muted);
}

.tt-slider-markers {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--tt-text-muted);
  margin-top: 8px;
  font-weight: 500;
  padding: 0 2px;
}

.tt-slider-markers span {
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  transition: color 0.15s ease, font-weight 0.15s ease;
  user-select: none;
}

.tt-slider-markers span:hover {
  color: var(--tt-brand-blue);
}

.tt-slider-markers span.active {
  color: var(--tt-brand-blue);
  font-weight: 700;
}

/* Compression Levels (Options Chips) */
.tt-level-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

@media (max-width: 600px) {
  .tt-level-options {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tt-level-chip {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 14px 10px;
  border: 1.5px solid var(--tt-border);
  border-radius: var(--tt-radius-sm);
  background: var(--tt-card-bg);
  cursor: pointer;
  text-align: center;
  transition: all 0.18s ease;
}

.tt-level-chip:hover {
  border-color: var(--tt-brand-blue);
  background: var(--tt-brand-soft);
}

.tt-level-chip.active {
  border-color: var(--tt-brand-blue);
  background: var(--tt-brand-soft);
  box-shadow: 0 0 0 2px var(--tt-brand-blue) inset, 0 4px 12px rgba(37, 99, 235, 0.14);
}

.tt-level-chip.active .tt-level-chip__title {
  color: var(--tt-brand-blue);
  font-weight: 800;
}

.tt-level-chip.active .tt-level-chip__pct {
  color: var(--tt-brand-blue);
  font-weight: 800;
}

.tt-level-chip.active .tt-level-chip__hint {
  color: var(--tt-brand-purple);
  font-weight: 600;
}

.tt-level-chip__title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--tt-text);
}

.tt-level-chip__pct {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--tt-brand-blue);
  margin-top: 4px;
}

.tt-level-chip__hint {
  font-size: 0.72rem;
  color: var(--tt-text-muted);
  margin-top: 2px;
}

/* Accordion */
.tt-accordion {
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius-sm);
  overflow: hidden;
  margin-top: 14px;
  background: var(--tt-card-bg);
}

.tt-accordion__header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--tt-bg);
  border: none;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--tt-text);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s;
}

.tt-accordion__header:hover {
  background: #EFF6FF;
}

.tt-accordion__icon {
  font-size: 0.75rem;
  transition: transform 0.2s ease;
}

.tt-accordion.open .tt-accordion__icon {
  transform: rotate(180deg);
}

.tt-accordion__content {
  display: none;
  padding: 16px;
  border-top: 1px solid var(--tt-border);
}

.tt-accordion.open .tt-accordion__content {
  display: block;
}

/* Form Controls & Sliders */
.tt-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.tt-label {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--tt-text);
  display: flex;
  justify-content: space-between;
}

.tt-select {
  padding: 8px 12px;
  border: 1.5px solid var(--tt-border);
  border-radius: var(--tt-radius-sm);
  background: var(--tt-card-bg);
  font-size: 0.9rem;
  color: var(--tt-text);
  outline: none;
  width: 100%;
}

.tt-select:focus {
  border-color: var(--tt-brand-blue);
}

.tt-slider-wrap {
  position: relative;
  display: flex;
  align-items: center;
  padding: 6px 0;
}

.tt-slider {
  flex-grow: 1;
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  background: #E2E8F0;
  border-radius: 999px;
  outline: none;
  cursor: pointer;
  transition: background 0.05s ease;
}

/* Chrome, Safari, Edge, Opera WebKit Track & Thumb */
.tt-slider::-webkit-slider-runnable-track {
  height: 8px;
  background: transparent;
  border-radius: 999px;
  border: none;
}

.tt-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  border: 2.5px solid #FFFFFF;
  cursor: grab;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4), 0 0 0 1px rgba(124, 58, 237, 0.2);
  margin-top: -7px;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.tt-slider:active::-webkit-slider-thumb {
  cursor: grabbing;
  transform: scale(1.18);
  box-shadow: 0 0 0 6px rgba(124, 58, 237, 0.22), 0 3px 12px rgba(37, 99, 235, 0.5);
}

.tt-slider:hover::-webkit-slider-thumb {
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.18), 0 2px 10px rgba(37, 99, 235, 0.45);
}

/* Firefox Track, Thumb & Progress */
.tt-slider::-moz-range-track {
  height: 8px;
  background: #E2E8F0;
  border-radius: 999px;
  border: none;
}

.tt-slider::-moz-range-progress {
  height: 8px;
  background: linear-gradient(90deg, #2563EB 0%, #7C3AED 100%);
  border-radius: 999px;
}

.tt-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  border: 2.5px solid #FFFFFF;
  cursor: grab;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4), 0 0 0 1px rgba(124, 58, 237, 0.2);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.tt-slider:active::-moz-range-thumb {
  cursor: grabbing;
  transform: scale(1.18);
  box-shadow: 0 0 0 6px rgba(124, 58, 237, 0.22), 0 3px 12px rgba(37, 99, 235, 0.5);
}

.tt-slider:hover::-moz-range-thumb {
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.18), 0 2px 10px rgba(37, 99, 235, 0.45);
}

.tt-slider-val {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--tt-brand-blue);
  min-width: 44px;
  text-align: right;
}

/* Switches */
.tt-switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}

.tt-switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 24px;
  flex-shrink: 0;
}

.tt-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.tt-slider-round {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #CBD5E1;
  transition: .2s;
  border-radius: 24px;
}

.tt-slider-round:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .2s;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.tt-switch input:checked + .tt-slider-round {
  background-color: var(--tt-brand-blue);
}

.tt-switch input:checked + .tt-slider-round:before {
  transform: translateX(18px);
}

/* Buttons */
.tt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: var(--tt-radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.tt-btn--primary {
  background: var(--tt-brand-gradient);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.tt-btn--primary:hover:not(:disabled) {
  background: var(--tt-brand-gradient-hover);
  transform: translateY(-1px);
}

.tt-btn--secondary {
  background: #FFFFFF;
  color: var(--tt-text);
  border: 1.5px solid var(--tt-border);
}

.tt-btn--secondary:hover:not(:disabled) {
  border-color: var(--tt-brand-blue);
  color: var(--tt-brand-blue);
}

.tt-btn--sm {
  padding: 7px 12px;
  font-size: 0.82rem;
}

.tt-btn--block {
  width: 100%;
}

.tt-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Results Stage in Preview Column */
.tt-preview-card {
  background: var(--tt-card-bg);
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius);
  padding: 16px 20px 20px;
  box-shadow: 0 6px 24px -10px rgba(22, 27, 51, 0.15);
}

.tt-results-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.tt-result-card {
  border: 1px solid var(--tt-border);
  border-radius: var(--tt-radius-sm);
  padding: 14px;
  background: #FFFFFF;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tt-result-card__header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tt-result-card__title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--tt-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-grow: 1;
}

.tt-savings-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--tt-success-soft);
  color: var(--tt-success);
  border: 1px solid var(--tt-success-border);
}

.tt-size-comparison {
  display: flex;
  justify-content: space-between;
  background: var(--tt-bg);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.82rem;
}

.tt-size-comp-item span:first-child {
  color: var(--tt-text-muted);
  display: block;
  font-size: 0.72rem;
}

.tt-size-comp-item span:last-child {
  font-weight: 700;
  color: var(--tt-text);
}

.tt-size-comp-item--new span:last-child {
  color: var(--tt-brand-blue);
}

/* Toast */
.tt-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #161B33;
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--tt-radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  z-index: 9999;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.25s ease;
  pointer-events: none;
}

.tt-toast.show {
  opacity: 1;
  transform: translateY(0);
}