/* ===============================
   CSS Variables
=============================== */
:root {
  /* Light Theme */
  --color-primary: #0d6efd;
  --color-primary-dark: #084298;
  --color-primary-light: #3d8bfd;
  --color-secondary: #6c757d;
  --color-success: #198754;
  --color-danger: #dc3545;
  --color-warning: #ffc107;
  --color-info: #0dcaf0;
  
  --color-bg-light: #f8f9fa;
  --color-bg-card: #ffffff;
  --color-bg-sidebar: #e9ecef;
  
  --color-text-light: #212529;
  --color-text-muted: #6c757d;
  --color-text-white: #ffffff;
  
  --color-border-light: #dee2e6;
  --color-border-medium: #ced4da;
  
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-heavy: rgba(0, 0, 0, 0.15);
  
  /* Dark Theme */
  --color-dark-bg: #121212;
  --color-dark-bg-card: #1e1e1e;
  --color-dark-bg-sidebar: #252525;
  
  --color-dark-text: #e0e0e0;
  --color-dark-text-muted: #a0a0a0;
  
  --color-dark-border: #3a3a3a;
  --color-dark-border-medium: #4a4a4a;
  
  --color-dark-shadow: rgba(0, 0, 0, 0.3);
  --color-dark-shadow-heavy: rgba(0, 0, 0, 0.5);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --max-content-width: 1200px;
  --header-height: 64px;
  --footer-height: 280px;
}

/* ===============================
   Base Styles
=============================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  background-color: var(--color-bg-light);
  color: var(--color-text-light);
  transition: background-color var(--transition-base), color var(--transition-base);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.dark {
  background-color: var(--color-dark-bg);
  color: var(--color-dark-text);
}

.container {
  max-width: var(--max-content-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ===============================
   Typography
=============================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-2xl);
}

h2 {
  font-size: var(--font-size-xl);
}

h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-size: var(--font-size-md);
}

p {
  margin-bottom: var(--spacing-md);
}

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

a:hover {
  color: var(--color-primary-dark);
}

body.dark a {
  color: var(--color-primary-light);
}

body.dark a:hover {
  color: var(--color-primary);
}

/* ===============================
   Header & Navigation
=============================== */
header {
  background: linear-gradient(135deg, #2a60ff, #0050b3);
  color: white;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 12px var(--color-shadow-heavy);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 700;
  font-size: var(--font-size-lg);
  cursor: default;
}

.logo i {
  font-size: var(--font-size-xl);
}

nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-tabs {
  display: flex;
  gap: var(--spacing-xs);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xs);
  backdrop-filter: blur(10px);
}

.nav-tab {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.9);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  white-space: nowrap;
}

.nav-tab:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.nav-tab.active {
  background: white;
  color: var(--color-primary-dark);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.theme-toggle {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-lg);
}

.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(15deg);
}

/* ===============================
   Main Content
=============================== */
main {
  flex: 1;
  padding: var(--spacing-xl) 0;
  position: relative;
}

/* ===============================
   Cards
=============================== */
.card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 24px var(--color-shadow);
  margin-bottom: var(--spacing-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
}

body.dark .card {
  background-color: var(--color-dark-bg-card);
  border-color: var(--color-dark-border);
  box-shadow: 0 8px 24px var(--color-dark-shadow);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--color-shadow-heavy);
}

body.dark .card:hover {
  box-shadow: 0 12px 32px var(--color-dark-shadow-heavy);
}

.card-header {
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-light);
  background: linear-gradient(90deg, rgba(13, 110, 253, 0.05), transparent);
}

body.dark .card-header {
  border-bottom-color: var(--color-dark-border);
  background: linear-gradient(90deg, rgba(13, 110, 253, 0.1), transparent);
}

.card-header h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.card-subtitle {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

body.dark .card-subtitle {
  color: var(--color-dark-text-muted);
}

.card-body {
  padding: var(--spacing-xl);
}

/* ===============================
   Form Elements
=============================== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-row {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.form-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-light);
}

body.dark .form-label {
  color: var(--color-dark-text);
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon i {
  position: absolute;
  left: var(--spacing-lg);
  color: var(--color-text-muted);
  font-size: var(--font-size-md);
}

body.dark .input-with-icon i {
  color: var(--color-dark-text-muted);
}

.input-with-icon input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) calc(var(--spacing-xl) + var(--spacing-lg));
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  background-color: var(--color-bg-card);
  color: var(--color-text-light);
}

body.dark .input-with-icon input {
  background-color: var(--color-dark-bg-card);
  border-color: var(--color-dark-border-medium);
  color: var(--color-dark-text);
}

.input-with-icon input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

.toggle-password {
  position: absolute;
  right: var(--spacing-md);
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: var(--font-size-md);
  transition: color var(--transition-fast);
}

.toggle-password:hover {
  color: var(--color-primary);
}

.textarea {
  width: 100%;
  padding: var(--spacing-lg);
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  resize: vertical;
  transition: all var(--transition-fast);
  background-color: var(--color-bg-card);
  color: var(--color-text-light);
  line-height: 1.5;
}

body.dark .textarea {
  background-color: var(--color-dark-bg-card);
  border-color: var(--color-dark-border-medium);
  color: var(--color-dark-text);
}

.textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

.select-container {
  position: relative;
  display: flex;
  align-items: center;
}

.select-container i {
  position: absolute;
  left: var(--spacing-lg);
  color: var(--color-text-muted);
  font-size: var(--font-size-md);
  pointer-events: none;
}

.select {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) calc(var(--spacing-xl) + var(--spacing-lg));
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  background-color: var(--color-bg-card);
  color: var(--color-text-light);
  cursor: pointer;
  transition: all var(--transition-fast);
  appearance: none;
}

body.dark .select {
  background-color: var(--color-dark-bg-card);
  border-color: var(--color-dark-border-medium);
  color: var(--color-dark-text);
}

.select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

/* ===============================
   Buttons
=============================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  box-shadow: 0 4px 12px rgba(13, 110, 253, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(13, 110, 253, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(13, 110, 253, 0.3);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.btn-copy {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: rgba(13, 110, 253, 0.1);
  border: none;
  color: var(--color-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.btn-copy:hover {
  background: rgba(13, 110, 253, 0.2);
}

body.dark .btn-copy {
  background: rgba(13, 110, 253, 0.2);
  color: var(--color-primary-light);
}

body.dark .btn-copy:hover {
  background: rgba(13, 110, 253, 0.3);
}

.btn-copy-small {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-copy-small:hover {
  color: var(--color-primary);
  background: rgba(13, 110, 253, 0.1);
}

/* ===============================
   Password Strength Indicator
=============================== */
.strength-indicator {
  margin-top: var(--spacing-lg);
}

.strength-bar {
  height: 12px;
  background-color: var(--color-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

body.dark .strength-bar {
  background-color: var(--color-dark-border);
}

.strength-fill {
  height: 100%;
  width: 0%;
  border-radius: var(--radius-full);
  transition: width var(--transition-base), background-color var(--transition-base);
}

.strength-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.strength-label {
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.strength-score {
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

body.dark .strength-score {
  color: var(--color-dark-text-muted);
}

/* ===============================
   Password Tips
=============================== */
.password-tips {
  background: rgba(13, 110, 253, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

body.dark .password-tips {
  background: rgba(13, 110, 253, 0.1);
}

.password-tips h4 {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.tip-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.tip-item i {
  color: var(--color-success);
}

/* ===============================
   Slider
=============================== */
.slider-container {
  margin-bottom: var(--spacing-md);
}

.custom-slider {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  outline: none;
  margin: var(--spacing-md) 0;
}

body.dark .custom-slider {
  background: var(--color-dark-border);
}

.custom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(13, 110, 253, 0.4);
  transition: all var(--transition-fast);
}

.custom-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(13, 110, 253, 0.5);
}

.custom-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(13, 110, 253, 0.4);
  transition: all var(--transition-fast);
  border: none;
}

.custom-slider::-moz-range-thumb:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(13, 110, 253, 0.5);
}

.slider-limits {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

body.dark .slider-limits {
  color: var(--color-dark-text-muted);
}

/* ===============================
   Checkbox Grid
=============================== */
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.checkbox-item {
  position: relative;
}

.checkbox-item input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox-item label {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.checkbox-item label:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--color-shadow);
}

.checkbox-item input[type="checkbox"]:checked + label {
  background: rgba(13, 110, 253, 0.1);
  border-color: var(--color-primary);
}

.checkbox-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 110, 253, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  font-size: var(--font-size-lg);
}

.checkbox-content {
  display: flex;
  flex-direction: column;
}

.checkbox-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.checkbox-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

body.dark .checkbox-desc {
  color: var(--color-dark-text-muted);
}

/* ===============================
   Generated Password
=============================== */
.generated-password-container {
  margin-top: var(--spacing-xl);
}

.generated-password {
  background: rgba(13, 110, 253, 0.05);
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

body.dark .generated-password {
  background: rgba(13, 110, 253, 0.1);
  border-color: var(--color-dark-border-medium);
}

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

.password-text {
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-lg);
  font-weight: 600;
  word-break: break-all;
  flex: 1;
  color: var(--color-text-light);
}

body.dark .password-text {
  color: var(--color-dark-text);
}

.password-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.password-actions .btn-icon {
  background: rgba(13, 110, 253, 0.1);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.password-actions .btn-icon:hover {
  background: rgba(13, 110, 253, 0.2);
  transform: scale(1.1);
}

.password-strength-info {
  display: flex;
  gap: var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

body.dark .password-strength-info {
  color: var(--color-dark-text-muted);
}

.password-strength-info strong {
  color: var(--color-primary);
}

/* ===============================
   Output Container
=============================== */
.output-container {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.output {
  background: rgba(13, 110, 253, 0.05);
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 300px;
  overflow-y: auto;
  color: var(--color-text-light);
  margin-bottom: 0;
}

body.dark .output {
  background: rgba(13, 110, 253, 0.1);
  border-color: var(--color-dark-border-medium);
  color: var(--color-dark-text);
}

.hash-info {
  display: flex;
  gap: var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.hash-info-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.hash-info-item i {
  color: var(--color-primary);
}

/* ===============================
   JWT Output
=============================== */
.jwt-output {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.jwt-section {
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

body.dark .jwt-section {
  border-color: var(--color-dark-border-medium);
}

.jwt-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(13, 110, 253, 0.05);
  border-bottom: 2px solid var(--color-border-medium);
}

body.dark .jwt-section-header {
  background: rgba(13, 110, 253, 0.1);
  border-bottom-color: var(--color-dark-border-medium);
}

.jwt-section-header h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: 0;
}

.verification-status {
  font-weight: 600;
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  background: var(--color-secondary);
  color: white;
}

.verification-status.verified {
  background: var(--color-success);
}

.verification-status.invalid {
  background: var(--color-danger);
}

.jwt-section-output {
  border: none;
  border-radius: 0;
  margin: 0;
  max-height: 200px;
}

/* ===============================
   Footer
=============================== */
footer {
  background: var(--color-bg-card);
  color: var(--color-text-light);
  padding: var(--spacing-xl) 0;
  margin-top: auto;
  border-top: 1px solid var(--color-border-light);
}

body.dark footer {
  background: var(--color-dark-bg-card);
  color: var(--color-dark-text);
  border-top-color: var(--color-dark-border);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.footer-info .logo {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.footer-description {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
}

body.dark .footer-description {
  color: var(--color-dark-text-muted);
}

.footer-copyright {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

body.dark .footer-copyright {
  color: var(--color-dark-text-muted);
}

.footer-links h4 {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

body.dark .footer-links a {
  color: var(--color-dark-text-muted);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-ads {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-light);
}

body.dark .footer-ads {
  border-top-color: var(--color-dark-border);
}

/* ===============================
   Responsive Styles
=============================== */
@media (max-width: 1024px) {
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-info {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  header .container {
    flex-direction: column;
    align-items: stretch;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    height: auto;
  }
  
  .logo {
    margin-bottom: var(--spacing-md);
    justify-content: center;
  }
  
  nav {
    justify-content: space-between;
  }
  
  .nav-tabs {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .nav-tab {
    padding: var(--spacing-sm);
    font-size: var(--font-size-xs);
  }
  
  .form-row {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .checkbox-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .password-strength-info {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

@media (max-width: 576px) {
  .card-body {
    padding: var(--spacing-lg);
  }
  
  .checkbox-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .footer-info {
    grid-column: span 1;
  }
  
  .password-display {
    flex-direction: column;
    align-items: stretch;
  }
  
  .password-actions {
    justify-content: center;
    margin-top: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .nav-tabs {
    flex-direction: column;
    width: 100%;
  }
  
  .nav-tab {
    width: 100%;
    justify-content: center;
  }
  
  .checkbox-grid {
    grid-template-columns: 1fr;
  }
}