/*
  Final shared mobile system for the Arabic RTL static site.
  This file intentionally centralizes the responsive, navigation, table,
  and theme-control behavior that used to be duplicated per page.
*/

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

html,
body {
  width: 100%;
  max-width: 100%;
  margin: 0;
}

html {
  direction: rtl;
}

body {
  min-width: 0;
  overflow-x: visible;
}

img,
svg,
canvas,
video,
iframe {
  max-width: 100%;
  height: auto;
}

#starfield,
canvas#sf {
  width: 100vw !important;
  max-width: 100vw !important;
  height: 100vh !important;
  left: 0 !important;
  right: auto !important;
}

.pgbar,
.prog-bar {
  width: 100vw !important;
  max-width: 100vw !important;
  left: 0 !important;
  right: auto !important;
  overflow: clip;
}

.pgbar > *,
.prog-bar > * {
  max-width: 100% !important;
}

table {
  max-width: 100%;
}

:root {
  --gth-nav-bg: rgba(255, 255, 255, 0.96);
  --gth-nav-border: rgba(15, 52, 96, 0.12);
  --gth-nav-text: #16213e;
  --gth-nav-soft: rgba(15, 52, 96, 0.06);
  --gth-nav-home: linear-gradient(135deg, #e94560, #ff6b6b);
  --gth-page-shadow: 0 10px 28px rgba(15, 52, 96, 0.08);
}

html[data-theme="dark"] {
  --gth-nav-bg: rgba(10, 10, 26, 0.94);
  --gth-nav-border: rgba(255, 255, 255, 0.14);
  --gth-nav-text: #ffffff;
  --gth-nav-soft: rgba(255, 255, 255, 0.1);
  --gth-page-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
}

.page-nav-top,
.page-nav-bottom {
  direction: rtl;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: min(100% - 24px, 1100px);
  max-width: 100%;
  margin-inline: auto;
  padding: 10px;
  border: 1px solid var(--gth-nav-border);
  border-radius: 22px;
  background: var(--gth-nav-bg);
  box-shadow: var(--gth-page-shadow);
  position: relative;
  z-index: 20;
}

.page-nav-top {
  margin-block: 12px 10px;
}

.page-nav-bottom {
  margin-block: 36px 18px;
}

.page-nav-top a,
.page-nav-bottom a,
.page-nav-top a:visited,
.page-nav-bottom a:visited,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 108px;
  max-width: 100%;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--gth-nav-border);
  background: var(--gth-nav-soft);
  color: var(--gth-nav-text);
  font: 700 0.92rem/1.4 Tahoma, Arial, sans-serif;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.page-nav-top a:hover,
.page-nav-bottom a:hover,
.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(2, 132, 199, 0.42);
  background: rgba(2, 132, 199, 0.14);
}

.page-nav-top .nav-home,
.page-nav-bottom .nav-home {
  color: #ffffff;
  border-color: transparent;
  background: var(--gth-nav-home);
}

.page-nav-bottom .nav-prev,
.page-nav-bottom .nav-next {
  min-width: 92px;
}

.table-wrap,
.tbl-wrap,
.score-matrix-wrap,
.matrix-scroll,
.diagram-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-inline: contain;
  border-radius: 12px;
}

.table-wrap {
  margin-block: 16px;
}

.table-wrap > table,
.tbl-wrap > table,
.score-matrix-wrap > table {
  max-width: none;
}

pre,
code,
.eq-line,
.eq-formula,
.eqr,
.eqr-v,
.eqr-d,
.rc-formula,
.cd-formula,
.formula,
.math {
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: normal;
}

.eq-line,
.eq-formula,
.rc-formula,
.cd-formula {
  white-space: normal;
}

.eqr {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.eqr > *,
.eq-row > *,
.formula-row > * {
  min-width: 0;
}

.gth-chart-fallback {
  display: block;
  width: 100%;
  min-height: 220px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(15, 52, 96, 0.06), rgba(2, 132, 199, 0.08));
}

@media (max-width: 768px) {
  .hero,
  header,
  main,
  .main,
  .container,
  .wrap,
  .section,
  .sec,
  .footer {
    max-width: 100%;
  }

  .section,
  .sec {
    padding-inline: 18px !important;
  }

  .hero {
    padding-inline: 18px !important;
  }

  .sec-in,
  .sec-inner,
  .section-inner,
  .hero-c,
  .hero-content,
  .content,
  .panel,
  .panel-in,
  .card,
  .glass-card,
  .source-card,
  .index-card,
  .guide-card,
  .concept-card,
  .section-card,
  .info-card,
  .rel-card,
  .vp-card,
  .crossed-card,
  .scenario-item,
  .step-content,
  .insight-box,
  .highlight-box,
  .warn-box,
  .note,
  .calc,
  .div {
    max-width: 100% !important;
    min-width: 0 !important;
  }

  .div {
    margin-inline: 0 !important;
  }

  .hero-cards,
  .concepts-grid,
  .scenario-grid,
  .gstudy-layout,
  .sym-grid-2,
  .sym-grid-3,
  .sym-card-grid,
  .authors-grid,
  .design-compare,
  .asm-grid,
  .expect-grid,
  .rel-grid,
  .vp-grid,
  .compare-grid,
  .rules-trio,
  .cond-grid,
  .comp-2col,
  .venn-pair,
  .g2,
  .g3,
  .g4 {
    grid-template-columns: 1fr !important;
    max-width: 100% !important;
  }

  .section [style*="grid-template-columns"],
  .sec [style*="grid-template-columns"],
  main [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    max-width: 100% !important;
  }

  .nav,
  .top-nav {
    max-width: 100% !important;
    overflow-x: auto !important;
    overscroll-behavior-inline: contain;
  }

  .nav-links {
    max-width: 100% !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    -webkit-overflow-scrolling: touch;
  }

  .fu[style*="display:table"],
  .fu[style*="display: table"] {
    display: block !important;
    width: 100% !important;
    overflow: visible !important;
  }

  .fu[style*="display:table"] > [style*="display:table-row"],
  .fu[style*="display: table"] > [style*="display: table-row"] {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 8px !important;
  }

  .fu[style*="display:table"] [style*="display:table-cell"],
  .fu[style*="display: table"] [style*="display: table-cell"] {
    display: block !important;
    width: 100% !important;
    border-radius: 10px;
  }

  .fu[style*="display:table"] [style*="width:4%"],
  .fu[style*="display: table"] [style*="width:4%"] {
    padding: 4px !important;
    min-height: 28px;
  }

  .constr-row {
    display: flex;
    flex-wrap: wrap !important;
    gap: 8px !important;
    align-items: center;
  }

  .constr-row > * {
    min-width: 0 !important;
  }

  .cr-badge {
    max-width: 100%;
    white-space: normal !important;
    text-align: center;
  }

  .ms-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }

  .fu[style*="display:flex"],
  .fu[style*="display: flex"],
  .fade-up[style*="display:flex"],
  .fade-up[style*="display: flex"],
  .card[style*="display:flex"],
  .card[style*="display: flex"],
  .section [style*="display:flex"],
  .section [style*="display: flex"],
  .sec [style*="display:flex"],
  .sec [style*="display: flex"] {
    flex-wrap: wrap !important;
  }

  .fu > [style*="min-width"],
  .fade-up > [style*="min-width"],
  .card > [style*="min-width"],
  .section [style*="min-width"],
  .sec [style*="min-width"] {
    min-width: 0 !important;
    max-width: 100% !important;
  }

  .page-nav-top,
  .page-nav-bottom {
    width: min(100% - 20px, 1100px);
    border-radius: 18px;
  }
}

@media (max-width: 640px) {
  .hero {
    min-height: auto !important;
    padding-block: 44px !important;
  }

  h1,
  .hero-title,
  .hero-t {
    max-width: 100%;
    font-size: 2.15rem !important;
    line-height: 1.25 !important;
    letter-spacing: 0 !important;
    overflow-wrap: anywhere;
  }

  h2,
  .stit,
  .section-title {
    max-width: 100%;
    font-size: 1.55rem !important;
    line-height: 1.35 !important;
    letter-spacing: 0 !important;
  }

  .hero-sub,
  .hero-subtitle-line,
  .hero-d,
  .hero-desc,
  .section-desc,
  .slead,
  .para {
    max-width: 100%;
    font-size: 0.98rem !important;
  }

  html[data-theme="light"] .hero-sub,
  html[data-theme="light"] .hero-subtitle-line,
  html[data-theme="light"] .hero-d,
  html[data-theme="light"] .hero-desc,
  html[data-theme="light"] .section-desc,
  html[data-theme="light"] .slead,
  html[data-theme="light"] .para {
    color: #475569 !important;
    opacity: 1 !important;
  }

  .nav,
  .top-nav {
    position: relative !important;
    top: auto !important;
    display: block !important;
    padding: 8px 12px !important;
  }

  .nav-logo,
  .nav-brand {
    justify-content: center;
    margin: 0 0 8px !important;
    padding: 4px 0 !important;
    white-space: normal !important;
    text-align: center;
  }

  .nav-links {
    display: flex !important;
    flex-wrap: nowrap !important;
    gap: 8px !important;
    padding-block: 2px 8px !important;
  }

  .nav-link,
  .nl {
    flex: 0 0 auto !important;
    height: auto !important;
    min-height: 36px !important;
    padding: 7px 12px !important;
    border: 1px solid rgba(15, 52, 96, 0.12) !important;
    border-radius: 999px !important;
    background: rgba(255, 255, 255, 0.62);
    white-space: nowrap !important;
  }

  .page-nav-top,
  .page-nav-bottom {
    gap: 8px;
    padding: 8px;
  }

  .page-nav-top a,
  .page-nav-bottom a,
  .theme-toggle {
    flex: 1 1 calc(50% - 8px);
    min-width: 0;
    padding-inline: 12px;
    font-size: 0.86rem;
  }

  .page-nav-bottom .nav-prev,
  .page-nav-bottom .nav-next,
  .page-nav-bottom .nav-home {
    flex-basis: calc(50% - 8px);
  }

  .page-nav-bottom .theme-toggle {
    flex-basis: 100%;
  }

  .crossed-grid {
    display: flex !important;
    flex-wrap: nowrap !important;
    justify-content: flex-start !important;
    align-items: stretch !important;
    gap: 14px !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    direction: ltr;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-inline: contain;
    padding: 4px 2px 16px !important;
  }

  .crossed-grid > .crossed-card {
    direction: rtl;
    flex: 0 0 min(312px, calc(100vw - 48px)) !important;
    width: min(312px, calc(100vw - 48px)) !important;
    max-width: min(312px, calc(100vw - 48px)) !important;
    min-width: 0 !important;
    margin: 0 !important;
    padding: 20px 16px !important;
    scroll-snap-align: start;
  }

  .crossed-card h3 {
    font-size: 1.05rem !important;
    line-height: 1.55 !important;
  }

  .matrix-grid {
    max-width: 100% !important;
    gap: 3px !important;
  }

  .matrix-grid[style*="repeat(4, 40px)"] {
    grid-template-columns: repeat(4, 34px) !important;
  }

  .matrix-cell {
    width: 34px !important;
    height: 34px !important;
    font-size: 0.68rem !important;
  }

  .table-wrap,
  .tbl-wrap,
  .score-matrix-wrap {
    margin-inline: 0;
    padding-bottom: 8px;
  }

  table {
    font-size: 0.82rem;
  }
}

@media (max-width: 380px) {
  h1,
  .hero-title,
  .hero-t {
    font-size: 1.95rem !important;
  }

  .page-nav-top a,
  .page-nav-bottom a,
  .theme-toggle {
    font-size: 0.82rem;
    padding-inline: 10px;
  }

  .crossed-grid > .crossed-card {
    flex-basis: min(300px, calc(100vw - 44px)) !important;
    width: min(300px, calc(100vw - 44px)) !important;
    max-width: min(300px, calc(100vw - 44px)) !important;
  }
}