/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
  /* Colors */
  --primary: #e91e63;
  --primary-light: #f8bbd9;
  --primary-dark: #c2185b;
  --secondary: #673ab7;
  --accent: #ff9800;
  
  --bg-main: #fafafa;
  --bg-card: #ffffff;
  --bg-chat: #f5f5f5;
  --bg-input: #ffffff;
  
  --text-primary: #212121;
  --text-secondary: #757575;
  --text-light: #9e9e9e;
  --text-inverse: #ffffff;
  
  --border-color: #e0e0e0;
  --border-light: #f0f0f0;
  
  --success: #4caf50;
  --error: #f44336;
  --warning: #ff9800;
  --info: #2196f3;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-xl: 0 12px 48px rgba(0,0,0,0.15);
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Typography */
  --font-main: 'Noto Sans JP', sans-serif;
  --font-display: 'M PLUS Rounded 1c', sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ========================================
   Utilities
   ======================================== */
.hidden { display: none !important; }
.invisible { visibility: hidden; }

/* ========================================
   Screen Management
   ======================================== */
.screen {
  display: none;
  min-height: 100vh;
}

.screen.active {
  display: flex;
  flex-direction: column;
}

/* ========================================
   Login Screen
   ======================================== */
#login-screen {
  background: linear-gradient(135deg, #fce4ec 0%, #f3e5f5 50%, #e8eaf6 100%);
  justify-content: center;
  align-items: center;
  padding: var(--space-lg);
}

.login-container {
  width: 100%;
  max-width: 420px;
  animation: fadeInUp 0.6s ease;
}

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

.login-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.logo-icon {
  font-size: 2.5rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.logo h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.login-form {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
}

/* Auth Tabs */
.auth-tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  background: var(--bg-chat);
  padding: var(--space-xs);
  border-radius: var(--radius-md);
}

.auth-tab {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.auth-tab.active {
  background: var(--bg-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.auth-panel {
  display: none;
}

.auth-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Form Elements */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.form-group input {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition-fast);
  background: var(--bg-input);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group input::placeholder {
  color: var(--text-light);
}

.form-options {
  margin-bottom: var(--space-lg);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--text-inverse);
  box-shadow: 0 4px 12px rgba(233, 30, 99, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(233, 30, 99, 0.4);
}

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

.btn-secondary {
  background: var(--bg-chat);
  color: var(--text-primary);
}

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

.btn-full {
  width: 100%;
}

.btn-small {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover {
  background: var(--bg-chat);
  color: var(--primary);
}

.error-message {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: #ffebee;
  color: var(--error);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  display: none;
}

.error-message.show {
  display: block;
  animation: shake 0.5s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.login-footer {
  text-align: center;
  margin-top: var(--space-lg);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.login-footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.login-footer a:hover {
  text-decoration: underline;
}

/* ========================================
   Main Screen
   ======================================== */
#main-screen {
  background: var(--bg-main);
}

.main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon-small {
  font-size: 1.5rem;
}

.header-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.credits-display {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background: linear-gradient(135deg, #fff9c4 0%, #ffecb3 100%);
  border-radius: var(--radius-full);
  font-weight: 600;
  color: #f57c00;
  font-size: 0.875rem;
}

.credits-display i {
  color: #ffa000;
}

/* ========================================
   Progress Indicator
   ======================================== */
.progress-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-light);
  gap: var(--space-sm);
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  opacity: 0.4;
  transition: var(--transition-normal);
}

.progress-step.active {
  opacity: 1;
}

.progress-step.completed {
  opacity: 1;
}

.progress-step.completed .step-number {
  background: var(--success);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--border-color);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  transition: var(--transition-normal);
}

.progress-step.active .step-number {
  background: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.step-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.progress-line {
  width: 40px;
  height: 2px;
  background: var(--border-color);
  margin-bottom: var(--space-lg);
}

/* ========================================
   Chat Container
   ======================================== */
.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Messages */
.message {
  display: flex;
  gap: var(--space-md);
  max-width: 85%;
  animation: messageSlideIn 0.3s ease;
}

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

.bot-message {
  align-self: flex-start;
}

.user-message {
  align-self: flex-end;
}

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.message-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.message-text {
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  line-height: 1.6;
}

.bot-message .message-text {
  background: var(--bg-card);
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) var(--space-xs);
  box-shadow: var(--shadow-sm);
}

.user-message .message-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--text-inverse);
  border-radius: var(--radius-lg) var(--radius-lg) var(--space-xs) var(--radius-lg);
}

.message-text p {
  margin-bottom: var(--space-sm);
}

.message-text p:last-child {
  margin-bottom: 0;
}

.message-hint {
  font-size: 0.85rem;
  color: var(--text-light);
  font-style: italic;
}

/* Message Actions (Buttons in messages) */
.message-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.action-btn {
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--primary);
  background: var(--bg-card);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.action-btn:hover {
  background: var(--primary);
  color: var(--text-inverse);
}

.action-btn.selected {
  background: var(--primary);
  color: var(--text-inverse);
}

/* ========================================
   Chat Input Area
   ======================================== */
.chat-input-area {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border-top: 1px solid var(--border-light);
}

.input-wrapper {
  max-width: 700px;
  margin: 0 auto;
}

.text-input-wrapper {
  display: flex;
  gap: var(--space-sm);
}

.chat-text-input {
  flex: 1;
  padding: var(--space-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.chat-text-input:focus {
  outline: none;
  border-color: var(--primary);
}

.send-btn {
  width: 48px;
  height: 48px;
  border: none;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--text-inverse);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.send-btn:hover {
  transform: scale(1.05);
}

/* URL Input */
.url-input-wrapper {
  display: flex;
  gap: var(--space-sm);
}

.url-input-group {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-input);
  transition: var(--transition-fast);
}

.url-input-group:focus-within {
  border-color: var(--primary);
}

.url-input-group i {
  color: var(--text-light);
}

.chat-url-input {
  flex: 1;
  border: none;
  font-size: 1rem;
  background: transparent;
}

.chat-url-input:focus {
  outline: none;
}

.url-input-wrapper .send-btn {
  width: auto;
  padding: 0 var(--space-lg);
  gap: var(--space-sm);
}

/* Button Options */
.button-input-wrapper {
  padding: var(--space-md) 0;
}

.button-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.option-btn {
  padding: var(--space-md) var(--space-xl);
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  min-width: 120px;
}

.option-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.option-btn .option-label {
  font-weight: 600;
}

.option-btn .option-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Image Selection */
.image-select-wrapper {
  padding: var(--space-md) 0;
}

.image-source-tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  background: var(--bg-chat);
  padding: var(--space-xs);
  border-radius: var(--radius-md);
}

.source-tab {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.source-tab.active {
  background: var(--bg-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.image-source-content {
  min-height: 200px;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-md);
}

.image-option {
  position: relative;
  border: 3px solid transparent;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-fast);
  aspect-ratio: 1;
}

.image-option:hover {
  border-color: var(--primary-light);
}

.image-option.selected {
  border-color: var(--primary);
}

.image-option.selected::after {
  content: '✓';
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

.image-option img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-option.main-selected {
  border-color: var(--accent);
}

.image-option.main-selected::before {
  content: 'メイン';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--accent);
  color: white;
  text-align: center;
  padding: var(--space-xs);
  font-size: 0.75rem;
  font-weight: 600;
}

/* AI Model Selection */
.model-selection {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.model-option {
  flex: 1;
  padding: var(--space-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.model-option:hover {
  border-color: var(--primary-light);
}

.model-option.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}

.model-option .model-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.model-option .model-name {
  font-weight: 600;
}

/* File Upload */
.file-upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  text-align: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.file-upload-area:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.file-upload-area i {
  font-size: 2.5rem;
  color: var(--text-light);
  margin-bottom: var(--space-md);
}

.file-upload-area p {
  color: var(--text-secondary);
}

/* ========================================
   Product Info Card
   ======================================== */
.product-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  margin-top: var(--space-md);
}

.product-card-header {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.product-card-image {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.product-card-info {
  flex: 1;
}

.product-card-name {
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.product-card-price {
  color: var(--error);
  font-weight: 700;
  font-size: 1.25rem;
}

.product-card-review {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

.product-card-review i {
  color: #ffc107;
}

/* ========================================
   Modals
   ======================================== */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-large {
  max-width: 900px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-light);
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  font-size: 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--bg-chat);
}

.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border-top: 1px solid var(--border-light);
}

/* Settings */
.settings-section {
  margin-bottom: var(--space-xl);
}

.settings-section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

.personas-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.persona-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--bg-chat);
  border-radius: var(--radius-md);
}

.persona-item-name {
  font-weight: 500;
}

.persona-item-actions {
  display: flex;
  gap: var(--space-xs);
}

.apikey-display {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-chat);
  border-radius: var(--radius-md);
  font-family: monospace;
  word-break: break-all;
}

/* ========================================
   Loading Overlay
   ======================================== */
.loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.95);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.loading-overlay.active {
  display: flex;
}

.loading-content {
  text-align: center;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-lg);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.loading-progress {
  width: 200px;
  height: 6px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0 auto;
}

.loading-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  width: 0%;
  transition: width 0.3s ease;
}

/* ========================================
   Preview Content
   ======================================== */
#preview-content {
  background: var(--bg-chat);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.preview-section {
  margin-bottom: var(--space-xl);
}

.preview-section-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--primary);
}

.preview-section-content {
  line-height: 1.8;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .progress-indicator {
    padding: var(--space-md);
    overflow-x: auto;
  }
  
  .step-label {
    display: none;
  }
  
  .chat-messages {
    padding: var(--space-md);
  }
  
  .message {
    max-width: 95%;
  }
  
  .modal-content {
    margin: var(--space-md);
    max-height: calc(100vh - var(--space-xl));
  }
  
  .button-options {
    flex-direction: column;
  }
  
  .option-btn {
    width: 100%;
  }
  
  .image-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .login-container {
    padding: var(--space-md);
  }
  
  .logo h1 {
    font-size: 1.25rem;
  }
  
  .auth-tabs {
    flex-direction: column;
  }
  
  .header-title {
    display: none;
  }
}