:root {
  --primary: #1a1a1a;
  --accent: #8c1d1d; /* Elegant Crimson */
  --bg-app: #fdfdfb; /* Paper White */
  --bg-card: #ffffff;
  --text-main: #2c3e50;
  --text-muted: #7f8c8d;
  --border-formal: #dcdde1;
  --success: #27ae60;
  --error: #c0392b;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-image: 
    linear-gradient(var(--border-formal) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-formal) 1px, transparent 1px);
  background-size: 50px 50px;
}

#app {
  width: 100%;
  max-width: 1000px;
  padding: 4rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
  animation: fadeIn 0.8s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

header {
  text-align: center;
  border-bottom: 3px double var(--primary);
  padding-bottom: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  font-family: 'Crimson Pro', serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.01em;
}

.logo i {
  color: var(--accent);
  width: 48px;
  height: 48px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  margin-top: 0.75rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-formal);
  box-shadow: 20px 20px 60px #d9d9d9, -20px -20px 60px #ffffff;
  padding: 4rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.page-status {
  font-family: 'Crimson Pro', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  text-align: right;
  border-bottom: 1px solid var(--border-formal);
  padding-bottom: 0.75rem;
}

.dropzone {
  border: 2px solid var(--border-formal);
  background: #f9f9f9;
  padding: 5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.dropzone:hover {
  background: #fff;
  border-color: var(--accent);
}

.upload-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  opacity: 0.5;
}

.dropzone h3 {
  font-family: 'Crimson Pro', serif;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--primary);
}

.dropzone p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-top: 0.75rem;
}

.settings-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  padding: 2.5rem;
  border: 1px solid var(--border-formal);
  background: #fdfdfd;
}

.settings-group {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  flex: 1;
  min-width: 180px;
}

.actions-group {
  flex: 1.5;
  flex-direction: row !important;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
}

.settings-group label {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.settings-group select {
  background: white;
  border: 1px solid var(--border-formal);
  color: var(--text-main);
  padding: 0.8rem;
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  outline: none;
}

.settings-group select:focus {
  border-color: var(--accent);
}

.toggle {
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
}

.toggle input {
  display: none;
}

.slider {
  position: relative;
  width: 40px;
  height: 20px;
  background: #dfe6e9;
  transition: var(--transition);
}

.slider::before {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  left: 3px;
  bottom: 3px;
  background: white;
  transition: var(--transition);
}

input:checked + .slider {
  background: var(--accent);
}

input:checked + .slider::before {
  transform: translateX(20px);
}

.btn-outline {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 0.8rem 1.5rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.preview-container {
  border: 1px solid var(--border-formal);
  padding: 1.5rem;
  background: #fdfdfd;
}

.preview-container img {
  width: 100%;
  max-height: 500px;
  object-fit: contain;
}

.status-container {
  text-align: center;
}

.progress-bar-wrapper {
  width: 100%;
  height: 2px;
  background: var(--border-formal);
  margin-bottom: 1.5rem;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.3s ease;
}

#status-text {
  font-family: 'Crimson Pro', serif;
  font-style: italic;
  font-size: 1.3rem;
  color: var(--text-muted);
}

.result-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 1rem;
}

.result-header h4 {
  font-family: 'Crimson Pro', serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
}

.btn-secondary {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.8rem 1.5rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.btn-secondary:hover {
  background: var(--primary);
}

.result-box {
  background: #ffffff;
  border: 1px solid var(--border-formal);
  padding: 3rem;
  min-height: 300px;
  max-height: 600px;
  overflow-y: auto;
  line-height: 2;
  font-family: 'Crimson Pro', serif;
  font-size: 1.2rem;
}

pre {
  white-space: pre-wrap;
  color: var(--text-main);
}

footer {
  text-align: center;
  border-top: 1px solid var(--border-formal);
  padding-top: 3rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4em;
}

.hidden {
  display: none !important;
}

/* Custom Scrollbar */
.result-box::-webkit-scrollbar {
  width: 8px;
}
.result-box::-webkit-scrollbar-track {
  background: #f1f1f1;
}
.result-box::-webkit-scrollbar-thumb {
  background: var(--border-formal);
}
.result-box::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}