/* zcore — layout: header, container, footer, grids, tabs, responsive */

/* ===== sticky header ===== */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.app-header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 20px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.header-left {
  position: absolute;
  left: 20px;
}
.app-title {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text);
  text-align: center;
}
.app-title span {
  color: var(--accent);
  font-weight: 300;
}
.header-actions {
  position: absolute;
  right: 20px;
  display: flex;
  gap: 8px;
}
.header-nav {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: center;
  gap: 0;
}

/* ===== main container ===== */
.app-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 20px 60px;
  position: relative;
  z-index: 2;
}

/* ===== sticky footer ===== */
.app-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
}
.app-footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 8px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-stats {
  display: flex;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 11px;
}
.footer-stat-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}
.footer-stat-label {
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 9px;
}
.footer-stat-value {
  font-weight: 600;
}
.footer-copyright {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

/* ===== page heading ===== */
.page-heading-wrap {
  margin-bottom: 24px;
}
.page-heading {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1px;
}
.page-subheading {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ===== dashboard 2-col row ===== */
.dash-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
@media (max-width: 768px) {
  .dash-row-2 {
    grid-template-columns: 1fr;
  }
}

/* ===== subscriptions split panel ===== */
.subs-split {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 768px) {
  .subs-split {
    grid-template-columns: 1fr;
  }
  .subs-split .subs-list-inner {
    max-height: 280px !important;
  }
}

/* ===== grids ===== */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5 {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 480px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5 {
    grid-template-columns: 1fr;
  }
}

/* ===== navigation tabs ===== */
.tab-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 10px 18px;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.15s ease;
  text-decoration: none;
  display: inline-block;
}
.tab-btn:hover {
  color: var(--text-muted);
}
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: var(--bg-card);
}
.tab-content {
  display: none;
}
.tab-content.active {
  display: block;
}

/* ===== responsive: mobile ===== */
@media (max-width: 640px) {
  .app-container {
    padding: 12px 12px 60px;
  }
  /* G2: compress header — title + actions row, then nav scrolls horizontally */
  .app-header-inner {
    flex-direction: row;
    padding: 10px 12px 0;
  }
  .header-left {
    position: static;
  }
  .header-actions {
    position: static;
    margin-left: auto;
  }
  .header-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
    padding: 0 12px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .header-nav::-webkit-scrollbar {
    display: none;
  }
  .app-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 40px;
    height: 36px;
    pointer-events: none;
    z-index: 2;
    background: linear-gradient(to left, var(--bg), transparent);
  }
  .tab-btn {
    flex-shrink: 0;
  }
  .modal {
    margin: 12px;
    padding: 16px;
  }
  .form-row {
    flex-direction: column;
    gap: 0;
  }
  .stat-value {
    font-size: 18px;
  }
  .footer-stats {
    gap: 12px;
    flex-wrap: wrap;
  }
}

/* ===== responsive: narrow mobile (F6) ===== */
@media (max-width: 480px) {
  #community-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ===== responsive: 1600px ===== */
@media (min-width: 1600px) {
  html {
    font-size: 14px;
  }
  .app-container,
  .app-header-inner,
  .app-footer-inner,
  .header-nav {
    max-width: 1440px;
  }
  .stat-value {
    font-size: 24px;
  }
  .tab-btn {
    padding: 12px 22px;
    font-size: 12px;
  }
  .btn {
    padding: 8px 16px;
    font-size: 12px;
  }
  .btn-sm {
    padding: 5px 12px;
    font-size: 11px;
  }
  td {
    padding: 12px 14px;
    font-size: 14px;
  }
  th {
    padding: 10px 14px;
    font-size: 11px;
  }
  .card {
    padding: 24px;
  }
  .stat-box {
    padding: 20px;
  }
  .form-input,
  .form-select {
    padding: 10px 12px;
    font-size: 14px;
  }
}

/* ===== responsive: 1920px ===== */
@media (min-width: 1920px) {
  html {
    font-size: 15px;
  }
  .app-container,
  .app-header-inner,
  .app-footer-inner,
  .header-nav {
    max-width: 1600px;
  }
  .app-container {
    padding: 32px 28px 60px;
  }
  .stat-value {
    font-size: 26px;
  }
  .card {
    padding: 28px;
    margin-bottom: 20px;
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    gap: 20px;
  }
  .game-card-banner {
    height: 180px;
  }
  .plan-price {
    font-size: 32px;
  }
  .modal {
    max-width: 720px;
    padding: 28px;
  }
}

/* ===== responsive: 2560px ===== */
@media (min-width: 2560px) {
  html {
    font-size: 16px;
  }
  .app-container,
  .app-header-inner,
  .app-footer-inner,
  .header-nav {
    max-width: 1920px;
  }
  .app-container {
    padding: 40px 32px 68px;
  }
  .stat-value {
    font-size: 28px;
  }
  .card {
    padding: 32px;
  }
  .game-card-banner {
    height: 200px;
  }
  .modal {
    max-width: 800px;
  }
}