/**
 * ArenaPulse Responsive Grid & Viewport Breakpoints
 * Breakpoints:
 * - Mobile: < 768px (4 columns, 16px margins)
 * - Tablet: 768px - 1023px (8 columns, 20px margins)
 * - Desktop: >= 1024px (12 columns, 24px margins, 1440px max width)
 */

/* ==========================================================================
   1. SMALL MOBILE (< 380px)
   ========================================================================== */

@media (max-width: 379px) {
  .top-app-bar-inner {
    padding: 0 var(--space-2);
  }

  .main-content {
    padding: var(--space-2);
    padding-bottom: 80px;
  }

  .font-display-lg-mobile {
    font-size: 28px;
  }

  .header-user-info span:first-child {
    display: none;
  }
}

@media (max-width: 1023px) {
  .hide-on-mobile {
    display: none !important;
  }
}

/* ==========================================================================
   2. TABLET BREAKPOINT (768px - 1023px)
   ========================================================================== */

@media (min-width: 768px) {
  .page-container {
    max-width: 768px;
  }

  .main-content {
    padding: var(--space-6);
    padding-bottom: 100px;
  }

  /* Responsive Tournament Grid (2 Columns on Tablet) */
  .tournament-grid-container,
  #tournaments-rail {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
    overflow: visible;
    padding-bottom: 0;
  }
  
  #tournaments-rail > * {
    width: 100% !important;
  }

  /* Responsive Stat Grids */
  .stats-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
  }

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

  .stats-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
  }

  /* Quick Actions (4 Columns on Tablet) */
  .quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
  }

  /* Bottom nav stretches with container */
  .bottom-nav-bar {
    max-width: 768px;
  }
}

/* ==========================================================================
   3. DESKTOP BREAKPOINT (1024px - 1440px)
   ========================================================================== */

@media (min-width: 1024px) {
  .header-mobile-brand {
    display: none !important;
  }

  .page-container.with-desktop-sidebar {
    max-width: 1440px;
    flex-direction: row;
    box-shadow: none;
    background: transparent;
  }

  /* Make Tournaments Rail 3 columns on Desktop */
  #tournaments-rail {
    grid-template-columns: repeat(3, 1fr) !important;
  }

  /* Show Desktop Sidebar */
  .desktop-sidebar {
    display: flex;
    flex-direction: column;
    width: 260px;
    height: 100vh;
    background: var(--surface-level-1);
    border-right: 1px solid var(--border-subtle);
    padding: var(--space-6) var(--space-4);
    gap: var(--space-5);
    position: sticky;
    top: 0;
    z-index: var(--z-sidebar);
    flex-shrink: 0;
    overflow-y: auto;
  }

  /* Hide Mobile Bottom Nav on Desktop */
  .bottom-nav-bar {
    display: none;
  }

  /* Hide Mobile Only Elements */
  .mobile-search-btn {
    display: none;
  }

  /* Show Desktop Search Bar */
  .header-desktop-search {
    display: flex;
    flex: 1;
    max-width: 440px;
    margin: 0 var(--space-6);
  }

  .header-search-bar {
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
  }

  .header-search-bar .search-icon {
    position: absolute;
    left: 12px;
    color: var(--color-on-surface-variant);
    font-size: 18px;
    pointer-events: none;
  }

  .header-search-input {
    width: 100%;
    background: var(--color-surface-container-high);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    padding: 8px 60px 8px 36px;
    color: var(--color-on-surface);
    font-family: var(--font-body);
    font-size: var(--text-body-md);
    transition: all var(--transition-normal);
  }

  .header-search-input:focus {
    background: var(--color-surface-container-highest);
    border-color: var(--color-secondary-container);
    box-shadow: 0 0 10px rgba(20, 216, 255, 0.2);
  }

  .search-kbd {
    position: absolute;
    right: 10px;
    background: var(--color-surface-container);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xs);
    padding: 2px 6px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--color-on-surface-variant);
    pointer-events: none;
  }

  /* Desktop Header Adjustment */
  .top-app-bar {
    background: rgba(17, 19, 26, 0.75);
    border-bottom: 1px solid var(--border-subtle);
  }

  .top-app-bar-inner {
    padding: 0 var(--space-6);
    height: 68px;
  }

  /* Main Content Body on Desktop */
  .main-content {
    padding: var(--space-6) var(--space-8);
    padding-bottom: var(--space-12);
    max-width: 1180px;
    width: 100%;
    margin: 0 auto;
  }

  /* 3-Column Tournament Cards on Desktop */
  .tournament-grid-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
  }

  /* Split Match Details Layout (Stream on Left, Standings on Right) */
  .match-split-layout {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: var(--space-6);
    align-items: start;
  }

  /* Split Wallet Deposit Layout (Online Methods on Left, Manual Bank Transfer on Right) */
  .deposit-split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    align-items: start;
  }

  /* Leaderboard Top 3 Showcase on Desktop */
  .leaderboard-podium-wrap {
    max-width: 700px;
    margin: 0 auto;
  }
}