/**
 * RH365-SBS Design System CSS
 * Sports betting statistical analysis platform
 */

/* CSS Custom Properties (Variables) */
:root {
  --gbbc-primary: #495057;
  --gbbc-secondary: #1A1A2E;
  --gbbc-accent: #EE82EE;
  --gbbc-success: #20B2AA;
  --gbbc-neutral: #708090;
  --gbbc-highlight: #4B0082;
  --gbbc-warning: #FFA500;
  --gbbc-error: #DC3545;
  --gbbc-info: #17A2B8;

  /* Background Colors */
  --gbbc-bg-primary: #FFFFFF;
  --gbbc-bg-secondary: #F8F9FA;
  --gbbc-bg-dark: var(--gbbc-secondary);
  --gbbc-bg-accent: var(--gbbc-accent);

  /* Text Colors */
  --gbbc-text-primary: #333333;
  --gbbc-text-secondary: #666666;
  --gbbc-text-light: #FFFFFF;
  --gbbc-text-muted: #999999;

  /* Typography */
  --gbbc-font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
  --gbbc-font-size-xs: 0.75rem;
  --gbbc-font-size-sm: 0.875rem;
  --gbbc-font-size-base: 1rem;
  --gbbc-font-size-lg: 1.125rem;
  --gbbc-font-size-xl: 1.25rem;
  --gbbc-font-size-2xl: 1.5rem;
  --gbbc-font-size-3xl: 1.875rem;
  --gbbc-font-size-4xl: 2.25rem;

  /* Spacing */
  --gbbc-spacing-xs: 0.25rem;
  --gbbc-spacing-sm: 0.5rem;
  --gbbc-spacing-md: 1rem;
  --gbbc-spacing-lg: 1.5rem;
  --gbbc-spacing-xl: 2rem;
  --gbbc-spacing-2xl: 3rem;
  --gbbc-spacing-3xl: 4rem;

  /* Borders */
  --gbbc-border-radius: 0.5rem;
  --gbbc-border-radius-sm: 0.25rem;
  --gbbc-border-radius-lg: 1rem;
  --gbbc-border-width: 1px;
  --gbbc-border-color: #E9ECEF;

  /* Shadows */
  --gbbc-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --gbbc-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --gbbc-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --gbbc-shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --gbbc-transition: all 0.3s ease;
  --gbbc-transition-fast: all 0.15s ease;

  /* Z-index layers */
  --gbbc-z-dropdown: 1000;
  --gbbc-z-sticky: 1020;
  --gbbc-z-fixed: 1030;
  --gbbc-z-modal: 1040;
  --gbbc-z-popover: 1050;
  --gbbc-z-tooltip: 1060;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--gbbc-font-family);
  font-size: var(--gbbc-font-size-base);
  line-height: 1.6;
  color: var(--gbbc-text-primary);
  background-color: var(--gbbc-bg-primary);
  overflow-x: hidden;
}

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

h1 { font-size: var(--gbbc-font-size-4xl); }
h2 { font-size: var(--gbbc-font-size-3xl); }
h3 { font-size: var(--gbbc-font-size-2xl); }
h4 { font-size: var(--gbbc-font-size-xl); }
h5 { font-size: var(--gbbc-font-size-lg); }
h6 { font-size: var(--gbbc-font-size-base); }

p {
  margin-bottom: var(--gbbc-spacing-md);
  line-height: 1.7;
}

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

a:hover {
  color: var(--gbbc-accent);
  text-decoration: underline;
}

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

/* Layout Components */
.gbbc-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.gbbc-container {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  padding: 0 var(--gbbc-spacing-md);
}

.gbbc-main {
  flex: 1;
  padding: var(--gbbc-spacing-xl) 0;
}

/* Grid System */
.gbbc-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gbbc-spacing-lg);
}

.gbbc-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gbbc-spacing-lg);
}

.gbbc-grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gbbc-spacing-md);
}

@media (min-width: 350px) {
  .gbbc-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Header */
.gbbc-header {
  background: var(--gbbc-bg-primary);
  border-bottom: var(--gbbc-border-width) solid var(--gbbc-border-color);
  position: sticky;
  top: 0;
  z-index: var(--gbbc-z-sticky);
  transition: var(--gbbc-transition);
}

.gbbc-header.gbbc-scrolled {
  box-shadow: var(--gbbc-shadow-md);
}

.gbbc-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--gbbc-spacing-md) 0;
}

.gbbc-logo {
  display: flex;
  align-items: center;
  gap: var(--gbbc-spacing-sm);
  font-weight: 700;
  font-size: var(--gbbc-font-size-xl);
  color: var(--gbbc-primary);
}

.gbbc-logo-img {
  width: 2rem;
  height: 2rem;
  border-radius: var(--gbbc-border-radius-sm);
}

.gbbc-nav-actions {
  display: flex;
  align-items: center;
  gap: var(--gbbc-spacing-sm);
}

.gbbc-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  background: none;
  color: var(--gbbc-primary);
  cursor: pointer;
  border-radius: var(--gbbc-border-radius-sm);
  transition: var(--gbbc-transition-fast);
}

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

/* Mobile Menu */
.gbbc-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--gbbc-z-modal);
  opacity: 0;
  visibility: hidden;
  transition: var(--gbbc-transition);
}

.gbbc-menu-overlay.gbbc-active {
  opacity: 1;
  visibility: visible;
}

.gbbc-menu-content {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background: var(--gbbc-bg-primary);
  padding: var(--gbbc-spacing-xl);
  transform: translateX(100%);
  transition: var(--gbbc-transition);
  overflow-y: auto;
}

.gbbc-menu-overlay.gbbc-active .gbbc-menu-content {
  transform: translateX(0);
}

.gbbc-menu-list {
  list-style: none;
  margin-top: var(--gbbc-spacing-2xl);
}

.gbbc-menu-item {
  margin-bottom: var(--gbbc-spacing-sm);
}

.gbbc-menu-link {
  display: flex;
  align-items: center;
  gap: var(--gbbc-spacing-sm);
  padding: var(--gbbc-spacing-md);
  color: var(--gbbc-text-primary);
  border-radius: var(--gbbc-border-radius);
  transition: var(--gbbc-transition-fast);
}

.gbbc-menu-link:hover {
  background: var(--gbbc-bg-secondary);
  text-decoration: none;
}

/* Buttons */
.gbbc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gbbc-spacing-xs);
  padding: var(--gbbc-spacing-sm) var(--gbbc-spacing-md);
  border: var(--gbbc-border-width) solid transparent;
  border-radius: var(--gbbc-border-radius);
  font-size: var(--gbbc-font-size-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--gbbc-transition-fast);
  user-select: none;
}

.gbbc-btn:focus {
  outline: 2px solid var(--gbbc-accent);
  outline-offset: 2px;
}

.gbbc-btn-primary {
  background: var(--gbbc-primary);
  color: var(--gbbc-text-light);
}

.gbbc-btn-primary:hover {
  background: var(--gbbc-secondary);
  color: var(--gbbc-text-light);
  text-decoration: none;
}

.gbbc-btn-secondary {
  background: var(--gbbc-neutral);
  color: var(--gbbc-text-light);
}

.gbbc-btn-secondary:hover {
  background: var(--gbbc-primary);
  color: var(--gbbc-text-light);
  text-decoration: none;
}

.gbbc-btn-accent {
  background: var(--gbbc-accent);
  color: var(--gbbc-text-light);
}

.gbbc-btn-accent:hover {
  background: var(--gbbc-highlight);
  color: var(--gbbc-text-light);
  text-decoration: none;
}

.gbbc-btn-lg {
  padding: var(--gbbc-spacing-md) var(--gbbc-spacing-lg);
  font-size: var(--gbbc-font-size-base);
}

.gbbc-btn-sm {
  padding: var(--gbbc-spacing-xs) var(--gbbc-spacing-sm);
  font-size: var(--gbbc-font-size-xs);
}

/* Cards */
.gbbc-card {
  background: var(--gbbc-bg-primary);
  border: var(--gbbc-border-width) solid var(--gbbc-border-color);
  border-radius: var(--gbbc-border-radius-lg);
  box-shadow: var(--gbbc-shadow-sm);
  overflow: hidden;
  transition: var(--gbbc-transition);
}

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

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

.gbbc-card-header {
  padding: var(--gbbc-spacing-lg) var(--gbbc-spacing-xl);
  background: var(--gbbc-bg-secondary);
  border-bottom: var(--gbbc-border-width) solid var(--gbbc-border-color);
}

.gbbc-card-footer {
  padding: var(--gbbc-spacing-lg) var(--gbbc-spacing-xl);
  background: var(--gbbc-bg-secondary);
  border-top: var(--gbbc-border-width) solid var(--gbbc-border-color);
}

/* Sections */
.gbbc-section {
  margin-bottom: var(--gbbc-spacing-3xl);
}

.gbbc-section-title {
  font-size: var(--gbbc-font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--gbbc-spacing-2xl);
  color: var(--gbbc-primary);
}

.gbbc-section-subtitle {
  font-size: var(--gbbc-font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--gbbc-spacing-lg);
  color: var(--gbbc-secondary);
  display: flex;
  align-items: center;
  gap: var(--gbbc-spacing-sm);
}

.gbbc-section-text {
  font-size: var(--gbbc-font-size-base);
  line-height: 1.7;
  color: var(--gbbc-text-secondary);
  margin-bottom: var(--gbbc-spacing-lg);
}

/* Animations */
.gbbc-animate-on-scroll {
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.gbbc-animate-on-scroll.gbbc-animated {
  opacity: 1;
  transform: translateY(0);
}

/* Utility Classes */
.gbbc-text-center { text-align: center; }
.gbbc-text-left { text-align: left; }
.gbbc-text-right { text-align: right; }

.gbbc-d-none { display: none; }
.gbbc-d-block { display: block; }
.gbbc-d-flex { display: flex; }
.gbbc-d-grid { display: grid; }

.gbbc-flex-column { flex-direction: column; }
.gbbc-flex-wrap { flex-wrap: wrap; }
.gbbc-justify-center { justify-content: center; }
.gbbc-align-center { align-items: center; }

.gbbc-w-full { width: 100%; }
.gbbc-h-full { height: 100%; }

.gbbc-mt-0 { margin-top: 0; }
.gbbc-mb-0 { margin-bottom: 0; }
.gbbc-ml-0 { margin-left: 0; }
.gbbc-mr-0 { margin-right: 0; }

.gbbc-p-0 { padding: 0; }
.gbbc-p-sm { padding: var(--gbbc-spacing-sm); }
.gbbc-p-md { padding: var(--gbbc-spacing-md); }
.gbbc-p-lg { padding: var(--gbbc-spacing-lg); }

/* Bottom Navigation */
.gbbc-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--gbbc-bg-primary);
  border-top: var(--gbbc-border-width) solid var(--gbbc-border-color);
  z-index: var(--gbbc-z-fixed);
}

.gbbc-bottom-nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.gbbc-bottom-nav-item {
  flex: 1;
}

.gbbc-bottom-nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--gbbc-spacing-sm);
  color: var(--gbbc-text-secondary);
  text-decoration: none;
  transition: var(--gbbc-transition-fast);
  min-height: 4rem;
}

.gbbc-bottom-nav-link:hover,
.gbbc-bottom-nav-item.gbbc-active .gbbc-bottom-nav-link {
  color: var(--gbbc-primary);
  background: var(--gbbc-bg-secondary);
  text-decoration: none;
}

.gbbc-bottom-nav-icon {
  font-size: var(--gbbc-font-size-lg);
  margin-bottom: var(--gbbc-spacing-xs);
}

.gbbc-bottom-nav-text {
  font-size: var(--gbbc-font-size-xs);
  font-weight: 500;
}

/* Footer */
.gbbc-footer {
  background: var(--gbbc-bg-dark);
  color: var(--gbbc-text-light);
  padding: var(--gbbc-spacing-2xl) 0;
  margin-top: auto;
  margin-bottom: 4rem;
}

.gbbc-footer-content {
  text-align: center;
}

.gbbc-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--gbbc-spacing-md);
  margin-bottom: var(--gbbc-spacing-lg);
}

.gbbc-footer-link {
  color: var(--gbbc-text-light);
  font-size: var(--gbbc-font-size-sm);
  opacity: 0.8;
  transition: var(--gbbc-transition-fast);
}

.gbbc-footer-link:hover {
  color: var(--gbbc-accent);
  opacity: 1;
  text-decoration: none;
}

.gbbc-partners {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--gbbc-spacing-md);
  margin: var(--gbbc-spacing-lg) 0;
}

.gbbc-partner-icon {
  width: 2rem;
  height: 2rem;
  opacity: 0.7;
  transition: var(--gbbc-transition-fast);
}

.gbbc-partner-icon:hover {
  opacity: 1;
}

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

.gbbc-form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--gbbc-spacing-xs);
  color: var(--gbbc-text-primary);
}

.gbbc-form-input {
  width: 100%;
  padding: var(--gbbc-spacing-sm) var(--gbbc-spacing-md);
  border: var(--gbbc-border-width) solid var(--gbbc-border-color);
  border-radius: var(--gbbc-border-radius);
  font-size: var(--gbbc-font-size-base);
  transition: var(--gbbc-transition-fast);
}

.gbbc-form-input:focus {
  outline: none;
  border-color: var(--gbbc-primary);
  box-shadow: 0 0 0 2px rgba(73, 80, 87, 0.2);
}

.gbbc-form-input.gbbc-error {
  border-color: var(--gbbc-error);
}

/* Notifications */
.gbbc-notification {
  position: fixed;
  top: var(--gbbc-spacing-lg);
  right: var(--gbbc-spacing-lg);
  background: var(--gbbc-bg-primary);
  border: var(--gbbc-border-width) solid var(--gbbc-border-color);
  border-radius: var(--gbbc-border-radius);
  padding: var(--gbbc-spacing-md);
  box-shadow: var(--gbbc-shadow-lg);
  z-index: var(--gbbc-z-tooltip);
  max-width: 300px;
  animation: gbbc-slide-in 0.3s ease;
}

.gbbc-notification-error {
  border-color: var(--gbbc-error);
  background: #FEF2F2;
  color: var(--gbbc-error);
}

.gbbc-notification-success {
  border-color: var(--gbbc-success);
  background: #F0FDF4;
  color: var(--gbbc-success);
}

@keyframes gbbc-slide-in {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Responsive Design */
@media (max-width: 375px) {
  .gbbc-container {
    padding: 0 var(--gbbc-spacing-sm);
  }

  .gbbc-grid-2,
  .gbbc-grid-3,
  .gbbc-grid-4 {
    grid-template-columns: 1fr;
    gap: var(--gbbc-spacing-md);
  }

  .gbbc-section-title {
    font-size: var(--gbbc-font-size-2xl);
  }

  .gbbc-section-subtitle {
    font-size: var(--gbbc-font-size-xl);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .gbbc-animate-on-scroll {
    animation: none;
    transition: none;
    opacity: 1;
    transform: none;
  }
}