/**
 * Audio Noise Remover Stylesheet
 * High-performance, responsive SaaS UI matching AudioTools design system.
 */

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

.noise-tool-wrapper {
  max-width: 880px;
  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
   ========================================================================== */

.noise-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 */
.noise-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;
}

.noise-dropzone:hover,
.noise-dropzone:focus-visible,
.noise-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: 1rem;
}

.dropzone-formats {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary, #64748B);
}

.dropzone-formats span {
  padding: 0.2rem 0.6rem;
  background: #EEF2F6;
  border-radius: 6px;
  border: 1px solid #E2E8F0;
}

/* ==========================================================================
   File Intake Info Bar
   ========================================================================== */

.file-info-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background-color: #F8FAFC;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 14px;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.file-meta-group {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-width: 0;
}

.file-type-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-name-heading {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary, #0F172A);
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 380px;
}

.file-chips {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.file-chip {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary, #475569);
  background: #FFFFFF;
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
  border: 1px solid #E2E8F0;
}

.btn-change-file {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary, #475569);
  background: #FFFFFF;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-change-file:hover {
  background-color: #F1F5F9;
  color: var(--text-primary, #0F172A);
  border-color: #CBD5E1;
}

/* ==========================================================================
   Noise Suppression Level Selector (3 Modes)
   ========================================================================== */

.settings-section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary, #0F172A);
  margin-bottom: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.preset-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.preset-card {
  position: relative;
  border: 2px solid var(--border, #E2E8F0);
  border-radius: 16px;
  padding: 1.25rem;
  background-color: #FFFFFF;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.preset-card:hover {
  border-color: #CBD5E1;
  background-color: #FAFAFC;
  transform: translateY(-2px);
}

.preset-card.active {
  border-color: var(--accent, #7C3AED);
  background-color: rgba(124, 58, 237, 0.02);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
}

.preset-badge {
  position: absolute;
  top: -10px;
  right: 12px;
  background: var(--accent, #7C3AED);
  color: #FFFFFF;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.preset-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.preset-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary, #0F172A);
}

.preset-intensity {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent, #7C3AED);
}

.preset-desc {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary, #475569);
  flex-grow: 1;
}

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

.action-bar {
  margin-top: 1.5rem;
  text-align: center;
}

.btn-denoise-primary {
  width: 100%;
  padding: 1rem 1.75rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: #FFFFFF;
  background: linear-gradient(135deg, var(--accent, #7C3AED) 0%, #6D28D9 100%);
  border: none;
  border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.btn-denoise-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.45);
}

.btn-denoise-primary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* Progress Box */
.progress-card {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: #F8FAFC;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 16px;
}

.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.progress-stage {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary, #0F172A);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.progress-percentage {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent, #7C3AED);
}

.progress-bar-track {
  width: 100%;
  height: 10px;
  background: #E2E8F0;
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7C3AED 0%, #A78BFA 100%);
  border-radius: 9999px;
  transition: width 0.2s ease;
}

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

.results-section {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.comparison-card {
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 18px;
  padding: 1.5rem;
  background: #FFFFFF;
}

.comparison-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.comparison-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary, #0F172A);
}

.players-dual-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.player-box {
  background: #F8FAFC;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 14px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.player-box.cleaned {
  background: #FAF5FF;
  border-color: rgba(124, 58, 237, 0.25);
}

.player-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.player-label {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary, #475569);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.player-box.cleaned .player-label {
  color: var(--accent, #7C3AED);
}

.player-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  background: #E2E8F0;
  color: #475569;
}

.player-box.cleaned .player-tag {
  background: #EDE9FE;
  color: #7C3AED;
}

.custom-audio-control {
  width: 100%;
  height: 40px;
  outline: none;
}

/* Metrics Dashboard */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.875rem;
}

.metric-card {
  background: #F8FAFC;
  border: 1px solid var(--border, #E2E8F0);
  border-radius: 12px;
  padding: 1rem;
  text-align: center;
}

.metric-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary, #64748B);
  margin-bottom: 0.35rem;
}

.metric-value {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary, #0F172A);
}

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

/* Dual Download Cards */
.download-cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.download-card {
  border: 2px solid var(--border, #E2E8F0);
  border-radius: 18px;
  padding: 1.5rem;
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
  position: relative;
}

.download-card.recommended {
  border-color: var(--accent, #7C3AED);
  background: linear-gradient(180deg, rgba(124, 58, 237, 0.02) 0%, #FFFFFF 100%);
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.08);
}

.download-badge {
  position: absolute;
  top: -10px;
  right: 14px;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.2rem 0.65rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.download-badge.purple {
  background: var(--accent, #7C3AED);
  color: #FFFFFF;
}

.download-badge.dark {
  background: #0F172A;
  color: #FFFFFF;
}

.download-card-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary, #0F172A);
  margin-bottom: 0.4rem;
}

.download-card-desc {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary, #475569);
  margin-bottom: 1.25rem;
}

.btn-download-action {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  border: none;
}

.btn-download-action.primary {
  background: var(--accent, #7C3AED);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.25);
}

.btn-download-action.primary:hover {
  background: #6D28D9;
  transform: translateY(-1px);
}

.btn-download-action.secondary {
  background: #0F172A;
  color: #FFFFFF;
}

.btn-download-action.secondary:hover {
  background: #1E293B;
  transform: translateY(-1px);
}

.btn-download-action:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 768px) {
  .noise-card {
    padding: 1.25rem;
  }

  .tool-hero-title {
    font-size: 1.75rem;
  }

  .preset-cards-grid {
    grid-template-columns: 1fr;
  }

  .players-dual-grid {
    grid-template-columns: 1fr;
  }

  .metrics-row {
    grid-template-columns: 1fr 1fr;
  }

  .download-cards-grid {
    grid-template-columns: 1fr;
  }

  .file-name-heading {
    max-width: 200px;
  }
}