:root {
  --bg-primary: #0a0812;
  --bg-secondary: #120f22;
  --card-bg: rgba(20, 18, 33, 0.65);
  --card-border: rgba(255, 255, 255, 0.08);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --primary: #8b5cf6;
  --primary-glow: rgba(139, 92, 246, 0.4);
  --primary-hover: #7c3aed;
  --accent-blue: #3b82f6;
  --accent-purple: #a855f7;
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --error: #ef4444;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  position: relative;
}

/* Background Ambient Orbs */
.glow-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.25;
  mix-blend-mode: screen;
  animation: orb-float 20s infinite ease-in-out;
}

.glow-purple {
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
  width: 600px;
  height: 600px;
  top: -10%;
  right: -5%;
  animation-delay: 0s;
}

.glow-blue {
  background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
  width: 500px;
  height: 500px;
  bottom: 5%;
  left: -5%;
  animation-delay: -5s;
}

@keyframes orb-float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(40px, -60px) scale(1.1);
  }
}

/* Main Container */
.app-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 640px;
  padding: 40px 20px;
}

/* Header */
.app-header {
  text-align: center;
  margin-bottom: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.logo svg {
  width: 38px;
  height: 38px;
  color: var(--primary);
  filter: drop-shadow(0 0 10px var(--primary-glow));
  animation: logo-pulse 4s infinite ease-in-out;
}

@keyframes logo-pulse {
  0%, 100% {
    transform: scale(1);
    filter: drop-shadow(0 0 8px var(--primary-glow));
  }
  50% {
    transform: scale(1.05);
    filter: drop-shadow(0 0 16px rgba(168, 85, 247, 0.6));
  }
}

.logo h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo h1 span {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 480px;
  margin: 0 auto;
}

/* Glassmorphic Card */
.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 32px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 
              inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: var(--transition-smooth);
}

.glass-card:focus-within {
  border-color: rgba(139, 92, 246, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 
              0 0 30px rgba(139, 92, 246, 0.15),
              inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Dropzone styling */
.file-dropzone {
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  padding: 32px 20px;
  text-align: center;
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: var(--transition-smooth);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.file-dropzone:hover, .file-dropzone.dragover {
  border-color: var(--primary);
  background: rgba(139, 92, 246, 0.04);
}

.upload-icon {
  width: 48px;
  height: 48px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  transition: var(--transition-smooth);
}

.file-dropzone:hover .upload-icon, .file-dropzone.dragover .upload-icon {
  color: var(--primary);
  transform: translateY(-4px);
}

.drop-text {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.browse-link {
  color: var(--primary);
  text-decoration: underline;
  font-weight: 600;
}

.file-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Selected File Badge */
.file-info-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.25);
  padding: 8px 16px;
  border-radius: 30px;
  margin-top: 10px;
  max-width: 90%;
  animation: scale-up 0.2s ease-out;
}

.file-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.remove-file-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
  border-radius: 50%;
  transition: var(--transition-smooth);
}

.remove-file-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--error);
}

.remove-file-btn svg {
  width: 14px;
  height: 14px;
}

@keyframes scale-up {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Inputs */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.input-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
}

textarea {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 14px;
  min-height: 120px;
  resize: vertical;
  outline: none;
  transition: var(--transition-smooth);
}

textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
  background: rgba(0, 0, 0, 0.3);
}

/* Buttons */
.primary-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--primary) 50%, var(--accent-purple) 100%);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  padding: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
  transition: var(--transition-smooth);
}

.primary-btn:hover {
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
  transform: translateY(-2px);
}

.primary-btn:active {
  transform: translateY(0);
}

.btn-arrow {
  width: 18px;
  height: 18px;
  transition: var(--transition-smooth);
}

.primary-btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* Status Panel */
.status-panel {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 16px 20px;
  margin-top: 24px;
  animation: slide-down 0.3s ease-out;
}

@keyframes slide-down {
  from { transform: translateY(-10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px stroke rgba(255, 255, 255, 0.1);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.status-text-container {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.status-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.status-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Results Panel */
.result-panel {
  background: var(--card-bg);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 24px;
  padding: 32px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 
              0 0 30px rgba(16, 185, 129, 0.05);
  animation: slide-up 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  margin-top: 24px;
}

@keyframes slide-up {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.success-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
}

.success-badge svg {
  width: 16px;
  height: 16px;
}

.close-result-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.close-result-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.result-section {
  margin-bottom: 24px;
}

.result-section h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.result-summary-text {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-primary);
}

/* Paths Grid */
.paths-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

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

.path-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.path-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.path-value {
  font-size: 0.85rem;
  font-family: monospace;
  color: var(--text-primary);
  word-break: break-all;
}

/* Markdown Preview */
.markdown-preview {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px;
  max-height: 280px;
  overflow-y: auto;
}

.markdown-preview pre {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  color: #a7f3d0;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Media Query for iPhone 12 mini & Vertically Constrained Screens */
@media (max-width: 480px), (max-height: 840px) {
  .app-container {
    padding: 16px 12px;
  }
  .app-header {
    margin-bottom: 16px;
  }
  .logo {
    gap: 8px;
    margin-bottom: 6px;
  }
  .logo svg {
    width: 28px;
    height: 28px;
  }
  .logo h1 {
    font-size: 1.6rem;
  }
  .subtitle {
    font-size: 0.85rem;
    line-height: 1.4;
  }
  .glass-card {
    padding: 16px;
    border-radius: 16px;
  }
  .file-dropzone {
    padding: 16px 12px;
    margin-bottom: 12px;
    border-radius: 12px;
  }
  .upload-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 8px;
  }
  .drop-text {
    font-size: 0.9rem;
    margin-bottom: 4px;
  }
  .file-hint {
    font-size: 0.75rem;
  }
  .input-group {
    gap: 6px;
    margin-bottom: 12px;
  }
  .input-group label {
    font-size: 0.8rem;
  }
  textarea {
    min-height: 80px;
    padding: 10px;
    font-size: 0.9rem;
    border-radius: 8px;
  }
  .primary-btn {
    padding: 12px;
    font-size: 0.95rem;
    border-radius: 8px;
  }
  .status-panel {
    padding: 12px 16px;
    margin-top: 16px;
    border-radius: 8px;
    gap: 12px;
  }
  .spinner {
    width: 20px;
    height: 20px;
  }
  .status-title {
    font-size: 0.9rem;
  }
  .status-desc {
    font-size: 0.75rem;
  }
  .result-panel {
    padding: 16px;
    border-radius: 16px;
    margin-top: 16px;
  }
  .result-header {
    padding-bottom: 12px;
    margin-bottom: 16px;
  }
  .success-badge {
    padding: 4px 10px;
    font-size: 0.8rem;
  }
  .close-result-btn {
    padding: 6px 12px;
    font-size: 0.8rem;
  }
  .result-section {
    margin-bottom: 16px;
  }
  .result-section h3 {
    font-size: 0.95rem;
    margin-bottom: 6px;
  }
  .result-summary-text {
    font-size: 0.85rem;
    line-height: 1.4;
  }
  .paths-grid {
    gap: 10px;
    margin-bottom: 16px;
  }
  .path-card {
    padding: 10px;
    border-radius: 8px;
    gap: 4px;
  }
  .path-label {
    font-size: 0.65rem;
  }
  .path-value {
    font-size: 0.75rem;
  }
  .markdown-preview {
    padding: 12px;
    max-height: 150px;
    border-radius: 8px;
  }
  .markdown-preview pre {
    font-size: 0.75rem;
    line-height: 1.4;
  }
}