main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  gap: 24px;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

#app-content {
  display: none;
  /* hidden until logged in */
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

#auth-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: 400px;
}

.auth-card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-title {
  font-size: 1.4rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}

.auth-input {
  width: 100%;
  background: var(--surface2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.auth-input:focus {
  border-color: var(--accent);
}

.auth-toggle {
  font-size: 0.85rem;
  color: var(--text2);
  text-align: center;
  cursor: pointer;
  margin-top: 8px;
}

.auth-toggle:hover {
  color: var(--accent2);
}

#logout-btn {
  display: none;
}

.hero {
  text-align: center;
}

.hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -1px;
  background: linear-gradient(135deg, #ffffff 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 8px;
}

.hero p {
  color: var(--text2);
  font-size: 0.95rem;
}

/* === UPLOAD ZONE === */
.upload-zone {
  width: 100%;
  border: 2px dashed rgba(108, 99, 255, 0.4);
  border-radius: 20px;
  background: var(--surface);
  padding: 44px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.upload-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent);
  background: var(--surface2);
  box-shadow: 0 0 40px var(--accent-glow);
}

.upload-zone:hover::before,
.upload-zone.drag-over::before {
  opacity: 1;
}

.upload-icon {
  font-size: 50px;
  line-height: 1;
  position: relative;
}

.upload-zone h2 {
  font-size: 1.1rem;
  font-weight: 600;
  position: relative;
}

.upload-zone .hint {
  font-size: 0.82rem;
  color: var(--text2);
  position: relative;
}

.upload-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 10px 24px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  position: relative;
  font-family: 'Inter', sans-serif;
}

.upload-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

#file-input,
#zip-input {
  display: none;
}

/* === PROGRESS CARD === */
.progress-card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 26px 30px;
  display: none;
  flex-direction: column;
  gap: 16px;
}

.progress-card.visible {
  display: flex;
}

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

.file-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.file-icon {
  width: 42px;
  height: 42px;
  background: var(--surface2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.file-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.file-size {
  font-size: 0.78rem;
  color: var(--text2);
  margin-top: 2px;
}

.status-label {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  white-space: nowrap;
}

.status-label.processing {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent2);
}

.status-label.done {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
}

.status-label.error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--error);
}

.progress-bar-wrap {
  background: var(--surface2);
  border-radius: 999px;
  height: 6px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 0.5s ease;
  width: 0%;
  position: relative;
  overflow: hidden;
}

.progress-bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }

  100% {
    transform: translateX(100%);
  }
}

.progress-pct {
  font-size: 0.78rem;
  color: var(--text2);
  text-align: right;
  margin-top: 4px;
}

.cost-row {
  display: flex;
  gap: 10px;
}

.cost-chip {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  flex: 1;
  text-align: center;
}

.cost-chip .c-label {
  font-size: 0.7rem;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.cost-chip .c-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.cost-chip .c-value.green {
  color: var(--success);
}

.cost-chip .c-value.purple {
  color: var(--accent2);
}