/* ============================================
   Common Styles (Light & Dark Mode)
   ============================================ */

/* CSS Variables - Light Theme (default) */
:root {
  /* Colors - Light */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f0f1f3;
  --bg-card: #ffffff;
  --bg-card-hover: #f8f9fa;
  
  --text-primary: #1a1a2e;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --text-inverse: #ffffff;
  
  --border-color: #e9ecef;
  --border-light: #f0f1f3;
  
  --accent-primary: #e53935;
  --accent-secondary: #ff6b6b;
  --accent-hover: #c62828;
  
  --success: #00b894;
  --success-bg: #e6f9f4;
  --danger: #e17055;
  --danger-bg: #fde8e3;
  --warning: #fdcb6e;
  --warning-bg: #fef9e7;
  --info: #74b9ff;
  --info-bg: #e8f4fd;
  
  --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 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;
  
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --header-height: 70px;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0d0d1a;
  --bg-secondary: #14142b;
  --bg-tertiary: #1a1a3e;
  --bg-card: #1a1a3e;
  --bg-card-hover: #222255;
  
  --text-primary: #e8e8f0;
  --text-secondary: #9e9eb8;
  --text-muted: #6c6c8a;
  --text-inverse: #0d0d1a;
  
  --border-color: #2a2a4a;
  --border-light: #1e1e40;
  
  --accent-primary: #ff6b6b;
  --accent-secondary: #e53935;
  --accent-hover: #ff8a8a;
  
  --success: #00d2a0;
  --success-bg: #0a2e26;
  --danger: #ff6b4a;
  --danger-bg: #2e1a14;
  --warning: #fdcb6e;
  --warning-bg: #2e2610;
  --info: #74b9ff;
  --info-bg: #0a1e3e;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.6);
}

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

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

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

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

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  height: auto;
}

ul {
  list-style: none;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

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

.highlight {
  color: var(--accent-primary);
}

.center {
  text-align: center;
}

.text-danger {
  color: var(--danger);
}

.text-warning {
  color: var(--warning);
}

.text-info {
  color: var(--info);
}

.mono {
  font-family: monospace;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
  min-height: calc(100vh - var(--header-height) - 200px);
  padding-top: var(--header-height);
}

/* ============================================
   Site Header / Navbar
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
  transition: var(--transition);
}

.navbar {
  height: 100%;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.nav-logo:hover {
  color: var(--accent-primary);
  text-decoration: none;
}

.logo-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.logo-text {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Mobile Toggle Button */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.nav-toggle:hover {
  background: var(--bg-secondary);
}

.toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active .toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .toggle-bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-primary);
  background: var(--bg-secondary);
  text-decoration: none;
}

.nav-link.active {
  color: var(--accent-primary);
  background: rgba(229, 57, 53, 0.1);
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}

.theme-btn:hover {
  border-color: var(--accent-primary);
  transform: scale(1.1);
  box-shadow: var(--shadow-sm);
}

.theme-icon {
  line-height: 1;
}

/* User Info in Nav */
.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.user-balance {
  font-weight: 700;
  color: var(--success);
  font-size: 0.95rem;
  padding: 2px 10px;
  background: var(--success-bg);
  border-radius: var(--radius-sm);
}

.user-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

/* ============================================
   Site Footer
   ============================================ */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 0;
  margin-top: auto;
  transition: var(--transition);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-grid {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
/*  grid-template-columns: 2fr 1fr 1fr 1.5fr;*/
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 12px;
}

.footer-brand .logo-icon {
  font-size: 2rem;
}

.footer-brand .logo-text {
  font-size: 1.5rem;
  font-weight: 800;
}

.footer-tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 4px;
}

.footer-links h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-decoration: none;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-links a:hover {
  color: var(--accent-primary);
  transform: translateX(4px);
}

.footer-newsletter h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-newsletter p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.newsletter-form {
  display: flex;
  gap: 8px;
}

.newsletter-form .form-input {
  flex: 1;
  padding: 10px 14px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-family);
  transition: var(--transition);
}

.newsletter-form .form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.15);
}

.newsletter-form .btn {
  white-space: nowrap;
}

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0;
}


/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  font-family: var(--font-family);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

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

.btn-primary {
  background: var(--accent-primary);
  color: var(--text-inverse);
  border-color: var(--accent-primary);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--accent-primary);
  border-color: var(--accent-primary);
}

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

.btn-success {
  background: var(--success);
  color: var(--text-inverse);
  border-color: var(--success);
}

.btn-success:hover {
  background: #00a881;
  border-color: #00a881;
  color: var(--text-inverse);
}

.btn-danger {
  background: var(--danger);
  color: var(--text-inverse);
  border-color: var(--danger);
}

.btn-danger:hover {
  background: #d45a3e;
  border-color: #d45a3e;
  color: var(--text-inverse);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.1rem;
  border-radius: var(--radius-lg);
}

.btn-sm,
.btn-small {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.btn-full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-link {
  color: var(--accent-primary);
  background-color: transparent;
}


/* ============================================
   Forms
   ============================================ */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-family);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.15);
}

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

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--text-secondary);
}

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

.forgot-link {
  color: var(--accent-primary);
  font-size: 0.9rem;
}

.forgot-link:hover {
  text-decoration: underline;
}

.form-terms {
  margin-bottom: 20px;
  font-size: 0.85rem;
}

.form-terms a {
  color: var(--accent-primary);
  text-decoration: underline;
}

/* ============================================
   Alerts
   ============================================ */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}

.alert-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid var(--danger);
}

.alert-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success);
}

.alert-info {
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid var(--info);
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* ============================================
   Badge
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
}

.badge-info {
  background: var(--info-bg);
  color: var(--info);
}

.badge-muted {
  background: transparent;
  color: var(--text-secondary);
}

/* ============================================
   Auth Pages (Login/Register)
   ============================================ */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  min-height: 100vh;
}

.auth-container {
  width: 100%;
  max-width: 460px;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.auth-header {
  text-align: center;
  margin-bottom: 30px;
}

.auth-logo {
  width: 60px;
  height: 60px;
  background: var(--accent-primary);
  color: var(--text-inverse);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 800;
  margin: 0 auto 16px;
}

.auth-header h1 {
  font-size: 1.75rem;
  margin-bottom: 6px;
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.auth-footer {
  text-align: center;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.auth-footer a {
  font-weight: 600;
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
  padding: 20px 0px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.page-header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-header h1 {
  font-size: 1.75rem;
  margin-bottom: 4px;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   Container
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   Theme Toggle
   ============================================ */
.theme-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.theme-toggle svg {
  width: 22px;
  height: 22px;
}

[data-theme="light"] .moon-icon,
[data-theme="dark"] .sun-icon {
  display: block;
}

[data-theme="light"] .sun-icon,
[data-theme="dark"] .moon-icon {
  display: none;
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Empty State
   ============================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state h3 {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.empty-state p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ============================================
   Responsive
   ============================================ */


/* ============================================
   Header & Footer Responsive
   ============================================ */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
    text-align: center;
  }
}

@media (max-width: 768px) {

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

  .container {
    padding: 0;
  }

  .page-header {
/*    padding: 20px;*/
  }

  .page-header h1 {
    font-size: 1.4rem;
  }

  .page-header p {
    font-size: 0.8rem;
  }

  /* Mobile Nav */
  .nav-toggle {
    display: flex;
  }

  .theme-toggle {
    bottom: 16px;
    right: 16px;
    width: 42px;
    height: 42px;
  }

  .theme-btn {
    align-self: center;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 20px;
    gap: 20px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links {
    flex-direction: column;
    width: 100%;
    gap: 4px;
  }

  .nav-link {
    width: 100%;
    justify-content: center;
    padding: 12px;
  }

  .nav-actions {
    width: 100%;
    flex-direction: column;
    gap: 12px;
  }

  .user-info {
    width: 100%;
    justify-content: center;
    padding: 12px;
  }

  .card {
    padding: 24px 8px;
  }

  /* Mobile Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: center;
  }

  .footer-links ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 16px;
  }

  .footer-links li {
    margin-bottom: 0;
  }

  .footer-links a:hover {
    transform: none;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .footer-bottom {
    padding: 20px;
  }

  .auth-card {
    padding: 28px 24px;
  }

  .btn-large {
    padding: 14px 24px;
    font-size: 1rem;
  }

}

@media (max-width: 480px) {
  .auth-card {
    padding: 24px 18px;
  }
}