/* PostMaker - Daily Newspaper Theme */

/* ========================================
   CSS Variables
   ======================================== */
:root {
  /* Newspaper Colors */
  --paper-bg: #fdfbf7;
  --paper-aged: #f5f0e6;
  --ink-black: #1a1a1a;
  --ink-light: #4a5568;
  --ink-faded: #718096;
  --newspaper-red: #8b0000;
  --newspaper-red-dark: #6b0000;
  --border-black: #1a1a1a;
  --border-light: #d1d5db;
  
  /* Typography */
  --font-serif: 'Playfair Display', 'Merriweather', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', 'Monaco', 'Menlo', monospace;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  
  /* Borders */
  --border-thin: 1px solid var(--border-black);
  --border-medium: 2px solid var(--border-black);
  --border-thick: 4px solid var(--border-black);
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* ========================================
   Base Reset & Typography
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--paper-bg);
  color: var(--ink-black);
  line-height: 1.6;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink-black);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

a {
  color: var(--newspaper-red);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--newspaper-red-dark);
  text-decoration: underline;
}

/* ========================================
   Layout Components
   ======================================== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Newspaper Header / Masthead */
.masthead {
  background: var(--ink-black);
  color: white;
  padding: var(--space-lg) 0;
  margin-bottom: var(--space-xl);
  position: relative;
}

.masthead::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 33%,
    rgba(255,255,255,0.03) 33%,
    rgba(255,255,255,0.03) 66%
  );
  pointer-events: none;
}

.masthead-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.masthead-logo {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -1px;
  color: white;
  text-decoration: none;
}

.masthead-logo:hover {
  color: white;
  text-decoration: none;
}

.masthead-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.masthead-badge {
  background: var(--newspaper-red);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: var(--space-xs) var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 2px;
}

/* Navigation */
.nav-bar {
  background: white;
  border-bottom: var(--border-medium);
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-bar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink-black);
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav-links a {
  color: var(--ink-light);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--newspaper-red);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-user-name {
  font-weight: 500;
  color: var(--ink-black);
}

.language-switcher {
  display: flex;
  gap: var(--space-sm);
}

.language-switcher button {
  background: transparent;
  border: none;
  padding: 4px 10px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.language-switcher button:hover {
  color: rgba(255,255,255,0.9);
}

.language-switcher button.active {
  color: white;
  font-weight: 600;
}

.language-switcher button {
  background: transparent;
  border: none;
  padding: 4px 10px;
  font-size: 0.85rem;
  cursor: pointer;
  color: rgba(255,255,255,0.7);
  transition: all var(--transition-fast);
}

.language-switcher button:hover {
  color: white;
}

.language-switcher button.active {
  color: white;
  font-weight: 600;
}

/* ========================================
   Cards & Sections
   ======================================== */
.card {
  background: white;
  border: var(--border-medium);
  border-radius: 0;
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-lg);
}

.card-header {
  background: var(--ink-black);
  color: white;
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
}

.card-header-sm {
  background: var(--paper-aged);
  color: var(--ink-black);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: var(--border-thin);
}

.card-body {
  padding: var(--space-lg);
}

/* Newspaper-style section divider */
.section-divider {
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--ink-black),
    var(--ink-black) 8px,
    transparent 8px,
    transparent 16px
  );
  margin: var(--space-xl) 0;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border: var(--border-medium);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--newspaper-red);
  color: white;
  border-color: var(--newspaper-red);
}

.btn-primary:hover:not(:disabled) {
  background: #a50000;
  border-color: #a50000;
  color: white !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 0, 0, 0.3);
}

.btn-secondary {
  background: white;
  color: var(--ink-black);
  border-color: var(--ink-black);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--ink-black);
  color: white !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-outline {
  background: transparent;
  color: var(--ink-black);
  border-color: var(--border-light);
}

.btn-outline:hover:not(:disabled) {
  background: var(--paper-aged);
  border-color: var(--ink-black);
}

/* Button loading animation */
.btn-loading {
  position: relative;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: btn-spin 0.8s linear infinite;
}

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

.btn-primary:hover:not(:disabled) {
  background: #a50000;
  border-color: #a50000;
  color: white !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 0, 0, 0.3);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--ink-black);
  color: white !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
  background: white;
  color: var(--ink-black);
  border-color: var(--ink-black);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--ink-black);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.btn-outline {
  background: transparent;
  color: var(--ink-black);
  border-color: var(--border-light);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--ink-black);
}

.btn-large {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.1rem;
}

.btn-block {
  width: 100%;
}

/* ========================================
   Forms
   ======================================== */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--ink-black);
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
}

.form-label-required::after {
  content: ' *';
  color: var(--newspaper-red);
}

.form-input,
.form-textarea,
.form-select,
input[type="text"],
input[type="password"],
textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-sans);
  font-size: 1rem;
  border: var(--border-medium);
  border-radius: 0;
  background: white;
  color: var(--ink-black);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus,
input[type="text"]:focus,
input[type="password"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--newspaper-red);
  box-shadow: 0 0 0 3px rgba(139, 0, 0, 0.1);
}

.form-textarea,
textarea {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
  resize: vertical;
  min-height: 120px;
}

.form-help {
  font-size: 0.8rem;
  color: var(--ink-faded);
  margin-top: var(--space-xs);
}

.form-error {
  color: var(--newspaper-red);
  font-size: 0.85rem;
  margin-top: var(--space-xs);
}

.form-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

/* ========================================
   Alerts & Messages
   ======================================== */
.alert {
  padding: var(--space-md) var(--space-lg);
  border: var(--border-thin);
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.alert-success {
  background: #f0fdf4;
  border-color: #22c55e;
  color: #166534;
}

.alert-error {
  background: #fef2f2;
  border-color: var(--newspaper-red);
  color: var(--newspaper-red);
}

.alert-warning {
  background: #fffbeb;
  border-color: #f59e0b;
  color: #92400e;
}

.alert-info {
  background: #eff6ff;
  border-color: #3b82f6;
  color: #1e40af;
}

/* ========================================
   Landing Page Specific
   ======================================== */
.landing-hero {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  background: var(--paper-aged);
  border-bottom: var(--border-thick);
  margin-bottom: var(--space-xl);
}

.landing-hero h1 {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 900;
  margin-bottom: var(--space-md);
  letter-spacing: -1px;
}

.landing-hero-subtitle {
  font-size: 1.25rem;
  color: var(--ink-light);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.landing-offer {
  background: transparent;
  color: darkred;
  padding: var(--space-md) var(--space-xl);
  display: inline-block;
  margin-bottom: var(--space-xl);
  position: relative;
}

.landing-offer-text {
  background: transparent;
  color: darkred;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 0 var(--space-xl);
}

.landing-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin: var(--space-2xl) 0;
}

.landing-step {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  background: white;
  border: var(--border-medium);
}

.landing-step-number {
  display: inline-block;
  width: 48px;
  height: 48px;
  background: var(--ink-black);
  color: white;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 48px;
  margin-bottom: var(--space-md);
}

.landing-step-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.landing-step-desc {
  color: var(--ink-light);
  font-size: 0.95rem;
}

.landing-benefits {
  background: var(--paper-aged);
  padding: var(--space-2xl);
  margin: var(--space-xl) 0;
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.landing-benefits h3 {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.landing-benefits ul {
  list-style: none;
  max-width: 600px;
  margin: 0 auto;
}

.landing-benefits li {
  padding: var(--space-sm) 0;
  padding-left: var(--space-xl);
  position: relative;
  font-size: 1.1rem;
}

.landing-benefits li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--newspaper-red);
  font-weight: 700;
}

.landing-cta {
  text-align: center;
  padding: var(--space-2xl);
}

.landing-footer {
  background: var(--ink-black);
  color: white;
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
}

.landing-footer-content {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  flex-wrap: wrap;
}

.landing-footer-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
}

.landing-footer-item::before {
  content: '●';
  color: var(--newspaper-red);
}

/* ========================================
   Dashboard Specific
   ======================================== */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: var(--border-thin);
}

.dashboard-welcome h2 {
  font-size: 1.75rem;
  margin-bottom: var(--space-xs);
}

.dashboard-welcome p {
  color: var(--ink-faded);
}

.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: white;
  border: var(--border-medium);
  padding: var(--space-lg);
  text-align: center;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--newspaper-red);
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--ink-faded);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: var(--space-xs);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-lg);
}

.dashboard-main {
  min-height: 400px;
}

.dashboard-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* Article List */
.article-list {
  border: var(--border-medium);
}

.article-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  border-bottom: var(--border-thin);
  transition: background var(--transition-fast);
}

.article-item:last-child {
  border-bottom: none;
}

.article-item:hover {
  background: var(--paper-aged);
}

.article-item-title {
  font-weight: 600;
  color: var(--ink-black);
  flex: 1;
  margin-right: var(--space-md);
}

.article-item-domain {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faded);
  margin-right: var(--space-md);
}

/* Article Detail */
.article-detail {
  background: white;
  border: var(--border-medium);
}

.article-detail-header {
  padding: var(--space-lg);
  border-bottom: var(--border-thin);
}

.article-detail-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.article-detail-source {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-faded);
}

.article-detail-body {
  padding: var(--space-lg);
}

.article-detail-image {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.article-detail-image img {
  max-width: 100%;
  max-height: 400px;
  border: var(--border-thin);
}

.article-detail-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.7;
  white-space: pre-wrap;
  background: var(--paper-aged);
  padding: var(--space-lg);
  border: var(--border-thin);
  min-height: 200px;
}

.article-detail-actions {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-top: var(--border-thin);
  background: var(--paper-aged);
}

/* History */
.history-list {
  max-height: 400px;
  overflow-y: auto;
}

.history-item {
  padding: var(--space-md);
  border-bottom: var(--border-thin);
}

.history-item-title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.history-item-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faded);
}

/* Loading States */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-light);
  border-top-color: var(--newspaper-red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.skeleton {
  background: linear-gradient(90deg, var(--paper-aged) 25%, white 50%, var(--paper-aged) 75%);
  background-size: 200% 100%;
  animation: skeleton 1.5s ease-in-out infinite;
  height: 20px;
  margin: var(--space-sm) 0;
}

@keyframes skeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Status Messages */
.status-message {
  padding: var(--space-md);
  margin: var(--space-md) 0;
  font-weight: 500;
}

.status-message.loading {
  background: #fffbeb;
  border: 1px solid #f59e0b;
  color: #92400e;
}

.status-message.success {
  background: #f0fdf4;
  border: 1px solid #22c55e;
  color: #166534;
}

.status-message.error {
  background: #fef2f2;
  border: 1px solid var(--newspaper-red);
  color: var(--newspaper-red);
}

/* ========================================
   Configuration Wizard
   ======================================== */
.wizard-progress {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.wizard-step {
  display: flex;
  align-items: center;
}

.wizard-step-number {
  width: 36px;
  height: 36px;
  background: var(--border-light);
  color: var(--ink-faded);
  font-family: var(--font-serif);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.wizard-step.active .wizard-step-number,
.wizard-step.done .wizard-step-number {
  background: var(--newspaper-red);
  color: white;
}

.wizard-step-label {
  margin-left: var(--space-sm);
  font-size: 0.8rem;
  color: var(--ink-faded);
  white-space: nowrap;
}

.wizard-step-connector {
  width: 60px;
  height: 2px;
  background: var(--border-light);
  margin: 0 var(--space-sm);
}

.wizard-step.done + .wizard-step-connector,
.wizard-step.active + .wizard-step-connector {
  background: var(--newspaper-red);
}

.wizard-content {
  background: white;
  border: var(--border-medium);
  padding: var(--space-xl);
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.wizard-section-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: var(--border-thin);
}

/* ========================================
   Login Page
   ======================================== */
.login-container {
  min-height: calc(100vh - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
}

.login-box {
  background: white;
  border: var(--border-thick);
  max-width: 420px;
  width: 100%;
}

.login-header {
  background: var(--ink-black);
  color: white;
  padding: var(--space-lg);
  text-align: center;
}

.login-header h1 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: white;
}

.login-body {
  padding: var(--space-xl);
}

.login-oauth-btn {
  width: 100%;
  padding: var(--space-md);
  background: white;
  border: var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.login-oauth-btn:hover {
  background: var(--paper-aged);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.login-divider {
  text-align: center;
  margin: var(--space-lg) 0;
  position: relative;
}

.login-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-light);
}

.login-divider span {
  background: white;
  padding: 0 var(--space-md);
  color: var(--ink-faded);
  font-size: 0.85rem;
  position: relative;
}

.login-footer {
  background: var(--paper-aged);
  padding: var(--space-md);
  text-align: center;
  font-size: 0.9rem;
  color: var(--ink-light);
  border-top: var(--border-thin);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  
  .masthead-logo { font-size: 1.5rem; }
  
  .landing-hero h1 { font-size: 2rem; }
  
  .landing-steps {
    grid-template-columns: 1fr;
  }
  
  .dashboard-stats {
    grid-template-columns: 1fr;
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .wizard-progress {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }
  
  .wizard-step-connector {
    display: none;
  }
  
  .nav-links {
    display: none;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .form-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-sm); }
  
  .card-body { padding: var(--space-md); }
  
  .landing-offer-text { font-size: 0.9rem; }
  
  .article-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
  
  .article-item-domain {
    margin-right: 0;
  }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--ink-faded); }
.text-red { color: var(--newspaper-red); }
.font-mono { font-family: var(--font-mono); }
.font-serif { font-family: var(--font-serif); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-md { margin-top: var(--space-md); }
.mb-md { margin-bottom: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.hidden { display: none !important; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }