/* ============================================
   SPBX - Main Styles
   Color Palette based on MOEX.com
   ============================================ */

:root {
  /* Primary Colors - MOEX Palette */
  --color-primary: #c8102e;
  --color-primary-dark: #a00d24;
  --color-primary-light: #e8314a;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f8f9fa;
  --color-gray-100: #f1f3f5;
  --color-gray-200: #e9ecef;
  --color-gray-300: #dee2e6;
  --color-gray-400: #ced4da;
  --color-gray-500: #adb5bd;
  --color-gray-600: #6c757d;
  --color-gray-700: #495057;
  --color-gray-800: #343a40;
  --color-gray-900: #212529;
  --color-black: #000000;
  
  /* Semantic Colors */
  --color-success: #28a745;
  --color-success-light: #d4edda;
  --color-success-dark: #1e7e34;
  --color-danger: #dc3545;
  --color-danger-light: #f8d7da;
  --color-danger-dark: #b02a37;
  --color-warning: #ffc107;
  --color-warning-light: #fff3cd;
  --color-warning-dark: #d39e00;
  --color-warning-text: #92400e;
  --color-info: #17a2b8;
  --color-info-light: #d1ecf1;
  --color-info-dark: #117a8b;

  /* Semantic Color RGB Values (for rgba() usage) */
  --color-primary-rgb: 200, 16, 46;
  --color-success-rgb: 40, 167, 69;
  --color-danger-rgb: 220, 53, 69;
  --color-warning-rgb: 255, 193, 7;
  --color-info-rgb: 23, 162, 184;
  
  /* Background Colors */
  --bg-primary: var(--color-white);
  --bg-secondary: var(--color-gray-50);
  --bg-dark: var(--color-gray-900);
  
  /* Text Colors */
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-muted: var(--color-gray-500);
  --text-light: var(--color-white);
  
  /* Border */
  --border-color: var(--color-gray-200);
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-base: var(--transition);
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding: 20px;

  /* Admin Layout */
  --admin-sidebar-width: 260px;
  --admin-content-max-width: 1400px;
  
  /* Header */
  --header-height: 70px;
  
  /* Font */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xxs: 11px;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height: 1.5;
  --line-height-tight: 1.25;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

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

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

p:last-child {
  margin-bottom: 0;
}

/* ============================================
   Layout Utilities
   ============================================ */

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

.container--wide {
  max-width: 1400px;
}

.container--narrow {
  max-width: 800px;
}

/* Flex utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.flex-wrap {
  flex-wrap: wrap;
}

.flex-1 {
  flex: 1;
}

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* Grid */
.grid {
  display: grid;
}

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-white { color: var(--text-light); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }

/* Dark context text utilities */
.dark .text-primary { color: var(--text-light); }
.dark .text-secondary { color: rgba(255, 255, 255, 0.7); }
.dark .text-muted { color: rgba(255, 255, 255, 0.5); }

/* Dark background text utilities */
.dark-text-secondary { color: rgba(255, 255, 255, 0.7) !important; }
.dark-text-muted { color: rgba(255, 255, 255, 0.5) !important; }

/* Dark context headings - ensure visibility on dark backgrounds */
.cta h1,
.cta h2,
.cta h3,
.cta h4,
.cta h5,
.cta h6,
.auth-layout__sidebar h1,
.auth-layout__sidebar h2,
.auth-layout__sidebar h3,
.auth-layout__sidebar h4,
.auth-layout__sidebar h5,
.auth-layout__sidebar h6 {
  color: var(--text-light) !important;
}

/* Market widget links on dark hero background */
.hero .market-widget__header a {
  color: var(--text-light);
  transition: color var(--transition);
  text-decoration: none;
}

.hero .market-widget__header a:hover {
  color: var(--color-primary);
}

.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }

/* Spacing utilities */
.m-0 { margin: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

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

/* Width utilities */
.w-full { width: 100%; }
.w-auto { width: auto; }

/* Display utilities */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Visibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   Header Styles
   ============================================ */

.header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.header__logo-img {
  height: 45px;
  width: auto;
  object-fit: contain;
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.header__nav-link {
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) 0;
  position: relative;
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-primary);
}

.header__nav-link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header__mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius);
  color: var(--text-primary);
}

.header__mobile-toggle:hover {
  background-color: var(--color-gray-100);
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-white);
  z-index: 99;
  padding: var(--spacing-lg);
  flex-direction: column;
  gap: var(--spacing-md);
}

.mobile-nav--open {
  display: flex;
}

.mobile-nav__link {
  display: block;
  padding: var(--spacing-md);
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius);
}

.mobile-nav__link:hover {
  background-color: var(--color-gray-100);
}

/* ============================================
   Footer Styles
   ============================================ */

.footer {
  background-color: var(--color-gray-900);
  color: var(--text-light);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: auto;
}

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

.footer__brand {
  grid-column: span 1;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

.footer__logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.footer__description {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.footer__column-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-400);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__link {
  color: var(--color-gray-300);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--text-light);
}

.footer__bottom {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-700);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer__copyright {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-gray-800);
  border-radius: 50%;
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--color-primary);
  color: var(--text-light);
}

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

@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer__brand {
    grid-column: span 2;
    margin-bottom: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
    --container-padding: 16px;
  }
  
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
  
  .header__nav,
  .header__actions {
    display: none;
  }
  
  .header__mobile-toggle {
    display: flex;
  }
  
  .footer__grid {
    grid-template-columns: 1fr;
  }
  
  .footer__brand {
    grid-column: span 1;
  }
  
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 12px;
  }
  
  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
}