/* ===== Theme tokens ===== */
:root {
  --bg: #f0ede8;
  --panel: #ffffff;
  --panel-2: #f5f3ef;
  --text: #222222;
  --muted: #6b6560;
  --border: #d6d0c8;
  --shadow: 0 10px 24px rgba(0, 0, 0, 0.07);
  --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.06);

  --primary: #c49246;
  --primary-contrast: #ffffff;

  --radius: 14px;
  --radius-sm: 10px;

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg: #1a1a1a;
    --panel: #242424;
    --panel-2: #2a2a2a;
    --text: #e5e2dd;
    --muted: #9a9590;
    --border: rgba(160, 155, 148, 0.2);
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
    --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.35);

    --primary: #c49246;
    --primary-contrast: #1a1a1a;
  }
}

:root[data-theme="dark"] {
  --bg: #1a1a1a;
  --panel: #242424;
  --panel-2: #2a2a2a;
  --text: #e5e2dd;
  --muted: #9a9590;
  --border: rgba(160, 155, 148, 0.2);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.35);

  --primary: #c49246;
  --primary-contrast: #1a1a1a;
}

:root[data-theme="light"] {
  /* nutzt defaults */
}

/* ===== Base ===== */
* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
}

/* ===== Topbar ===== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.logo {
  height: 57px;
  object-fit: cover;
  border: none;
  box-shadow: none;
  background: #222222;
  padding: 4px;
}

:root[data-theme="dark"] .logo,
:root[data-theme="auto"] .logo {
  background: transparent;
  padding: 0;
}

.brand-text {
  min-width: 0;
}

.brand-title {
  font-weight: 800;
  letter-spacing: 0.2px;
  line-height: 1.1;
  font-size: 1.1rem;
  margin: 0;
}

.brand-subtitle {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 2px;
}

.topbar-actions {
  display: flex;
  gap: 10px;
}

/* ===== Main Content (1-spaltig) ===== */
.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px 16px 120px 16px;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

/* ===== Step Panels ===== */
.step-panel {
  display: none;
  animation: fadeIn 0.2s ease-out;
}

.step-panel.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.step-container {
  background: color-mix(in oklab, var(--panel) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-soft);
}

.step-title {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.2px;
  margin: 0 0 12px;
  color: var(--text);
}

.step-description {
  color: var(--muted);
  line-height: 1.6;
  margin: 0 0 24px;
  font-size: 1rem;
}

.status-message {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
  min-height: 1.2em;
}

/* ===== Step 1: CSV List with Checkboxes ===== */
.csv-list {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.csv-list-title {
  font-weight: 700;
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.csv-list-subtitle {
  color: var(--muted);
  margin: 0 0 16px;
  font-size: 0.95rem;
}

.checkbox-group {
  display: grid;
  gap: 10px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: color-mix(in oklab, var(--panel-2) 88%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.checkbox-item:hover {
  background: color-mix(in oklab, var(--panel-2) 95%, transparent);
  border-color: color-mix(in oklab, var(--text) 20%, var(--border));
}

.checkbox-item input[type="checkbox"] {
  cursor: pointer;
  accent-color: var(--text);
}

.checkbox-label {
  cursor: pointer;
  flex: 1;
  font-weight: 550;
}

.checkbox-item--converted {
  opacity: 0.65;
  background: color-mix(in oklab, var(--muted) 12%, var(--panel-2));
  border-color: color-mix(in oklab, var(--border) 60%, transparent);
  cursor: not-allowed;
}

.checkbox-item--converted:hover {
  background: color-mix(in oklab, var(--muted) 12%, var(--panel-2));
  border-color: color-mix(in oklab, var(--border) 60%, transparent);
}

.checkbox-item--converted input[type="checkbox"] {
  cursor: not-allowed;
  opacity: 0.5;
}

.checkbox-item--converted .checkbox-label {
  cursor: not-allowed;
  color: var(--muted);
}

/* ===== Step 2: CSV Navigation & Table ===== */
.csv-nav {
  margin-bottom: 20px;
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.label {
  display: block;
  font-weight: 650;
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.select {
  flex: 1;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel-2) 90%, transparent);
  color: var(--text);
  outline: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 1rem;
}

.select:focus {
  border-color: color-mix(in oklab, var(--text) 40%, var(--border));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--text) 10%, transparent);
}

.table-container {
  overflow: auto;
  max-height: 40vh;
  min-height: 120px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: color-mix(in oklab, var(--panel) 92%, transparent);
  margin: 20px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: transparent;
}

th, td {
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
  font-size: 0.95rem;
}

thead th {
  position: sticky;
  top: 0;
  background: color-mix(in oklab, var(--panel) 92%, var(--panel-2));
  z-index: 1;
  font-weight: 750;
}

tbody tr:hover {
  background: color-mix(in oklab, var(--panel-2) 92%, transparent);
}

.empty-state {
  padding: 40px 20px;
  text-align: center;
}

.empty-title {
  font-weight: 800;
  letter-spacing: 0.2px;
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.empty-subtitle {
  color: var(--muted);
  line-height: 1.4;
  margin: 0;
  font-size: 0.95rem;
}

/* ===== Step 3: Export ===== */
.export-instruction {
  margin: 24px 0;
}

.export-preview {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.export-placeholder {
  padding: 60px 20px;
  text-align: center;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.export-placeholder p {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.6;
}

.export-results {
  margin-top: 20px;
  padding: 16px;
  background: color-mix(in oklab, var(--panel-2) 88%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.results-title {
  margin: 0 0 12px;
  font-size: 1.05rem;
  font-weight: 700;
}

.results-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.results-list li {
  padding: 10px 12px;
  background: color-mix(in oklab, var(--panel) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--border);
  font-size: 0.95rem;
}

.results-list li.success {
  border-left-color: rgba(34, 197, 94, 0.8);
}

.results-list li.error {
  border-left-color: rgba(239, 68, 68, 0.8);
}

.results-list li.skipped {
  border-left-color: rgba(234, 179, 8, 0.8);
}

/* ===== Buttons ===== */
.btn {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-weight: 650;
  background: color-mix(in oklab, var(--panel-2) 90%, transparent);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, border-color 0.15s ease;
  font-size: 1rem;
  font-family: var(--font);
}

.btn:hover:not(:disabled) {
  background: color-mix(in oklab, var(--panel-2) 98%, transparent);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  border-color: transparent;
  background: #222222;
  color: #ffffff;
  font-weight: 700;
}

.btn-primary:hover:not(:disabled) {
  background: #333333;
}

:root[data-theme="dark"] .btn-primary,
:root[data-theme="auto"] .btn-primary {
  background: #ffffff;
  color: #222222;
}

:root[data-theme="dark"] .btn-primary:hover:not(:disabled),
:root[data-theme="auto"] .btn-primary:hover:not(:disabled) {
  background: #f0f0f0;
}

.btn-secondary {
  /* default styling */
}

.btn-ghost {
  background: transparent;
}

.btn-lg {
  padding: 14px 20px;
  font-size: 1.05rem;
  width: 100%;
}

.step-actions {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.step-actions .btn {
  flex: 1;
  min-width: 120px;
}

@media (max-width: 480px) {
  .step-actions {
    flex-direction: column;
  }

  .step-actions .btn {
    width: 100%;
  }
}

/* ===== Step Navigation (Bottom Bar) ===== */
.step-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: color-mix(in oklab, var(--panel) 92%, transparent);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-around;
  align-items: stretch;
  z-index: 10;
  padding: 0;
  margin: 0;
}

.step-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--muted);
  font-family: var(--font);
  transition: color 0.15s ease, background 0.15s ease;
  position: relative;
}

.step-tab:hover {
  background: color-mix(in oklab, var(--panel-2) 50%, transparent);
  color: var(--text);
}

.step-tab.active {
  color: var(--text);
  background: color-mix(in oklab, var(--text) 8%, transparent);
}

.step-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
}

.step-num {
  font-weight: 800;
  font-size: 1.2rem;
}

.step-label {
  font-size: 0.8rem;
  font-weight: 600;
}

@media (max-width: 480px) {
  .step-label {
    font-size: 0.75rem;
  }

  .step-num {
    font-size: 1rem;
  }
}

/* ===== Input Field ===== */
.input {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel-2) 90%, transparent);
  color: var(--text);
  outline: none;
  font-size: 1rem;
  font-family: var(--font);
}

.input:focus {
  border-color: color-mix(in oklab, var(--text) 40%, var(--border));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--text) 10%, transparent);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .main-content {
    padding: 16px 12px 120px 12px;
  }

  .step-container {
    padding: 20px 16px;
  }

  .step-title {
    font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  .topbar {
    padding: 12px 14px;
  }

  .brand-title {
    font-size: 0.95rem;
  }

  .brand-subtitle {
    font-size: 0.8rem;
  }

  .main-content {
    padding: 14px 12px 120px 12px;
  }

  .step-container {
    padding: 16px 12px;
  }

  .step-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
  }

  .step-description {
    font-size: 0.9rem;
    margin-bottom: 16px;
  }

  .step-actions {
    gap: 8px;
  }
}