/**
 * Audio Compressor Stylesheet
 * Polished, high-converting SaaS UI matching AudioTools design system.
 */

/* ==========================================================================
   Tool Container & Hero Header
   ========================================================================== */

.compressor-tool-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem 1rem;
}

.tool-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--accent-light, #EDE9FE);
  color: var(--accent, #7C3AED);
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
  border: 1px solid rgba(124, 58, 237, 0.15);
}

.tool-hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-primary, #0F172A);
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  text-align: center;
}

.tool-hero-desc {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text-secondary, #475569);
  max-width: 680px;
  margin: 0 auto 2rem auto;
  text-align: center;
}

/* ==========================================================================
   Main Interaction Card
   ========================================================================== */

.compressor-card {
  background: var(--bg-surface, #FFFFFF);
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
  transition: box-shadow var(--transition-normal, 200ms ease);
}

/* Dropzone */
.compressor-dropzone {
  border: 2px dashed #CBD5E1;
  border-radius: 18px;
  padding: 3.5rem 1.5rem;
  text-align: center;
  background-color: #F8FAFC;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  outline: none;
}

.compressor-dropzone:hover,
.compressor-dropzone:focus-visible,
.compressor-dropzone.drag-active {
  border-color: var(--accent, #7C3AED);
  background-color: rgba(124, 58, 237, 0.03);
  transform: translateY(-1px);
}

.dropzone-icon-circle {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--accent-light, #EDE9FE);
  color: var(--accent, #7C3AED);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.12);
}

.dropzone-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary, #0F172A);
  margin-bottom: 0.5rem;
}

.dropzone-subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary, #475569);
  margin-bottom: 1.25rem;
}

.dropzone-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 9999px;
  font-size: 0.775rem;
  color: #64748B;
  font-weight: 600;
}

/* ==========================================================================
   Loaded File Information Header
   ========================================================================== */

.file-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.file-info-left {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.file-avatar-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-light, #EDE9FE);
  color: var(--accent, #7C3AED);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.file-meta-content {
  min-width: 0;
}

.file-meta-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary, #0F172A);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 380px;
}

.file-meta-badges {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
  flex-wrap: wrap;
}

.badge-pill {
  display: inline-block;
  font-size: 0.725rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 6px;
  background: #E2E8F0;
  color: #475569;
}

.badge-pill--purple {
  background: var(--accent-light, #EDE9FE);
  color: var(--accent, #7C3AED);
}

.btn-change-file {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: #475569;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-change-file:hover {
  background: #F1F5F9;
  border-color: #94A3B8;
  color: #0F172A;
}

/* Audio Player Section */
.original-player-section {
  margin-bottom: 1.75rem;
  padding: 1rem;
  background: #F8FAFC;
  border-radius: 14px;
  border: 1px solid #E2E8F0;
}

.player-section-label {
  font-size: 0.775rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748B;
  margin-bottom: 0.5rem;
  display: block;
}

.audio-player-element {
  width: 100%;
  height: 40px;
  outline: none;
}

/* ==========================================================================
   Compression Settings & Presets
   ========================================================================== */

.settings-section-title {
  font-size: 0.875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #0F172A;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.presets-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 768px) {
  .presets-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .presets-grid {
    grid-template-columns: 1fr;
  }
}

.preset-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 0.75rem;
  border-radius: 14px;
  background: #FFFFFF;
  border: 2px solid #E2E8F0;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
  text-align: center;
}

.preset-btn:hover {
  border-color: #CBD5E1;
  background: #F8FAFC;
}

.preset-btn.active {
  border-color: var(--accent, #7C3AED);
  background: rgba(124, 58, 237, 0.04);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.12);
}

.preset-btn-bitrate {
  font-size: 1.0625rem;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 0.2rem;
}

.preset-btn.active .preset-btn-bitrate {
  color: var(--accent, #7C3AED);
}

.preset-btn-hint {
  font-size: 0.75rem;
  color: #64748B;
  font-weight: 600;
}

.preset-btn.active .preset-btn-hint {
  color: var(--accent, #7C3AED);
}

.preset-pill-tag {
  position: absolute;
  top: -9px;
  right: 8px;
  background: var(--accent, #7C3AED);
  color: #FFFFFF;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.1rem 0.4rem;
  border-radius: 9999px;
  text-transform: uppercase;
}

/* ==========================================================================
   Live Estimation Box
   ========================================================================== */

.estimation-box {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.estimation-label-group {
  display: flex;
  flex-direction: column;
}

.estimation-label-text {
  font-size: 0.775rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #64748B;
}

.estimation-values {
  font-size: 1.05rem;
  font-weight: 800;
  color: #0F172A;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.15rem;
}

.estimation-arrow {
  color: #94A3B8;
  font-weight: 400;
}

.estimation-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 800;
  background: #DCFCE7;
  color: #166534;
}

.estimation-badge.warning {
  background: #FEF3C7;
  color: #92400E;
}

.estimation-context-tip {
  font-size: 0.8125rem;
  color: #64748B;
  width: 100%;
  margin-top: 0.25rem;
}

/* ==========================================================================
   Advanced Pro Settings Collapsible Drawer
   ========================================================================== */

.advanced-toggle-btn {
  background: none;
  border: none;
  color: var(--accent, #7C3AED);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0;
  margin-bottom: 1.25rem;
}

.advanced-toggle-btn svg {
  transition: transform 0.2s ease;
}

.advanced-toggle-btn.open svg {
  transform: rotate(180deg);
}

.advanced-drawer {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.advanced-drawer.hidden {
  display: none;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 0.4rem;
}

.form-select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid #CBD5E1;
  border-radius: 10px;
  background-color: #FFFFFF;
  color: #0F172A;
  font-size: 0.875rem;
  font-weight: 600;
  outline: none;
  transition: border-color 0.15s ease;
}

.form-select:focus {
  border-color: var(--accent, #7C3AED);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-group-hint {
  font-size: 0.75rem;
  color: #64748B;
  margin-top: 0.35rem;
}

/* ==========================================================================
   Primary Action Button & Progress
   ========================================================================== */

.btn-primary-compress {
  width: 100%;
  padding: 1rem 1.5rem;
  background-color: var(--accent, #7C3AED);
  color: #FFFFFF;
  border: none;
  border-radius: 14px;
  font-size: 1.0625rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.25);
}

.btn-primary-compress:hover:not(:disabled) {
  background-color: #6D28D9;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.35);
}

.btn-primary-compress:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.compress-btn-subtext {
  font-size: 0.775rem;
  color: #64748B;
  text-align: center;
  margin-top: 0.6rem;
  font-style: italic;
}

/* Progress Container */
.compressor-progress-box {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: 0.6rem;
}

.progress-bar-track {
  width: 100%;
  height: 8px;
  background: #E2E8F0;
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7C3AED, #A855F7);
  border-radius: 9999px;
  transition: width 0.15s ease;
}

/* ==========================================================================
   Results & Comparison View
   ========================================================================== */

.results-view {
  display: none;
}

.results-view.active {
  display: block;
}

.success-badge-banner {
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  border-radius: 14px;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #065F46;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.comparison-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 640px) {
  .comparison-stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 1rem;
  text-align: center;
}

.stat-card-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: #64748B;
  margin-bottom: 0.35rem;
}

.stat-card-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: #0F172A;
}

.stat-card-value.highlight-green {
  color: #16A34A;
}

.stat-card-value.highlight-accent {
  color: var(--accent, #7C3AED);
}

.warning-alert-box {
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: 12px;
  padding: 0.85rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: #92400E;
  line-height: 1.5;
}

.results-action-group {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.btn-download-compressed {
  flex: 2;
  min-width: 240px;
  padding: 1rem 1.5rem;
  background: var(--accent, #7C3AED);
  color: #FFFFFF;
  border: none;
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.25);
  text-decoration: none;
}

.btn-download-compressed:hover {
  background: #6D28D9;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.35);
  color: #FFFFFF;
}

.btn-reset-compress {
  flex: 1;
  min-width: 160px;
  padding: 1rem 1.25rem;
  background: #FFFFFF;
  color: #475569;
  border: 1px solid #CBD5E1;
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}

.btn-reset-compress:hover {
  background: #F1F5F9;
  color: #0F172A;
  border-color: #94A3B8;
}