/* ==================== GENERATOR PAGE ==================== */

.gen-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--fg);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-brand:hover { color: var(--accent); }

.nav-tag {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  background: var(--accent-glow);
}

.gen-main {
  min-height: 100vh;
  padding-top: 5rem;
}

/* ==================== UPLOAD PANEL ==================== */
.upload-panel {
  padding: 5rem 2rem 6rem;
  max-width: 700px;
  margin: 0 auto;
}

.upload-inner { display: flex; flex-direction: column; gap: 0; }

.gen-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.gen-subtitle {
  font-size: 0.95rem;
  color: var(--fg-muted);
  margin-bottom: 3rem;
}

/* Drop zone */
.dropzone {
  border: 1px dashed var(--border);
  background: var(--bg-elevated);
  padding: 4rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
  overflow: hidden;
}
.dropzone:hover, .dropzone.drag-over {
  border-color: var(--accent);
  background: var(--bg-card);
}
.dropzone.drag-over .dropzone-content { opacity: 0.3; }
.dropzone.drag-over .dropzone-active-label { opacity: 1; }

.dropzone-active-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.2em;
  opacity: 0;
  transition: opacity 0.2s;
}

.dropzone-icon { margin-bottom: 1.25rem; }
.dropzone-label {
  font-size: 1rem;
  color: var(--fg);
  margin-bottom: 0.5rem;
}
.dropzone-sub {
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin-bottom: 1rem;
}

.btn-upload {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.6rem 1.5rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  text-transform: uppercase;
}
.btn-upload:hover { background: var(--accent); color: #000; }

/* File preview */
.file-preview {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.file-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.file-icon {
  font-size: 1.4rem;
  color: var(--accent);
  flex-shrink: 0;
}
.file-details { flex: 1; min-width: 0; }
.file-name {
  display: block;
  font-size: 0.9rem;
  color: var(--fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-size {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-dim);
  margin-top: 0.2rem;
}
.file-remove {
  background: none;
  border: none;
  color: var(--fg-dim);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.25rem 0.5rem;
  transition: color 0.2s;
  flex-shrink: 0;
}
.file-remove:hover { color: var(--accent); }

.btn-generate {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.1rem 1.5rem;
  background: var(--accent);
  color: #000;
  border: none;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-generate:hover { opacity: 0.9; }
.btn-generate:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-arrow { font-size: 1.1rem; }

/* ==================== PROCESSING PANEL ==================== */
.processing-panel {
  padding: 6rem 2rem;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}
.processing-inner { display: flex; flex-direction: column; align-items: center; gap: 3rem; }

.proc-stages { display: flex; flex-direction: column; gap: 1rem; width: 100%; max-width: 360px; }
.proc-stage {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  opacity: 0.35;
  transition: opacity 0.4s, border-color 0.4s;
}
.proc-stage.active { opacity: 1; border-color: var(--accent); }
.proc-stage.done { opacity: 0.6; }

.stage-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg-dim);
  flex-shrink: 0;
  transition: background 0.3s;
}
.proc-stage.active .stage-indicator { background: var(--accent); animation: pulse 1s ease-in-out infinite; }
.proc-stage.done .stage-indicator { background: #4caf50; }

.stage-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
}

/* Animated waveform */
.proc-waveform {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 80px;
}
.pw-bar {
  width: 6px;
  background: var(--accent);
  border-radius: 2px;
  animation: procWave 1.2s ease-in-out infinite;
  animation-delay: var(--delay);
  height: 20%;
  opacity: 0.6;
}
@keyframes procWave {
  0%, 100% { height: 20%; }
  50% { height: 90%; }
}

/* ==================== ERROR PANEL ==================== */
.error-panel {
  padding: 6rem 2rem;
  max-width: 500px;
  margin: 0 auto;
  text-align: center;
}
.error-inner { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
.error-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 61, 0, 0.15);
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--accent);
  font-weight: 700;
}
.error-msg { font-size: 0.95rem; color: var(--fg-muted); line-height: 1.6; max-width: 380px; }
.btn-retry {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  background: none;
  padding: 0.7rem 1.5rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-retry:hover { background: var(--accent); color: #000; }

/* ==================== RESULT PANEL ==================== */
.result-panel {
  padding: 5rem 2rem 6rem;
  max-width: 1100px;
  margin: 0 auto;
}
.result-inner { display: flex; flex-direction: column; gap: 4rem; }

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.result-cover-wrap {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
}
.result-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.result-cover-glow {
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--accent-glow), transparent 50%, var(--accent-glow));
  pointer-events: none;
  z-index: 1;
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  margin-top: 1.5rem;
}
.feature-item {
  background: var(--bg-elevated);
  padding: 1rem 1.25rem;
}
.feature-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.3rem;
}
.feature-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  text-transform: capitalize;
}
.feature-value.accent { color: var(--accent); font-family: var(--mono); }

.prompt-block { margin-top: 2rem; }
.prompt-text {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-top: 0.75rem;
  padding: 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
}

.result-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.btn-download {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
  justify-content: center;
  padding: 0.9rem 1.5rem;
  background: var(--accent);
  color: #000;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  transition: opacity 0.2s;
  min-width: 160px;
}
.btn-download:hover { opacity: 0.88; }

.btn-new {
  flex: 1;
  padding: 0.9rem 1.5rem;
  background: none;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  min-width: 160px;
}
.btn-new:hover { border-color: var(--fg-muted); color: var(--fg); }

/* History */
.history-section { border-top: 1px solid var(--border); padding-top: 3rem; }
.history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.history-thumb {
  aspect-ratio: 1;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: border-color 0.2s;
}
.history-thumb:hover { border-color: var(--accent); }
.history-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Footer */
.gen-footer {
  padding: 2rem 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

/* ==================== UTILITY ==================== */
.hidden { display: none !important; }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .result-grid { grid-template-columns: 1fr; gap: 2rem; }
  .upload-panel { padding: 3rem 1.5rem 4rem; }
  .result-panel { padding: 3rem 1.5rem 4rem; }
  .result-actions { flex-direction: column; }
  .btn-download, .btn-new { min-width: 0; }
  .features-grid { grid-template-columns: 1fr; }
}