:root{
  --bg:#0b1020;
  --page:#0f1730;
  --card:#131d3a;
  --text:#f4f6ff;
  --muted:#c8d0ff;
  --accent:#7aa7ff;
  --accent2:#60e1c2;
  --border: rgba(255,255,255,0.14);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius: 18px;
}

*{ box-sizing:border-box; }

html,body{
  margin:0; padding:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% 0%, rgba(122,167,255,0.25), transparent 60%),
              radial-gradient(1000px 600px at 80% 0%, rgba(96,225,194,0.18), transparent 60%),
              var(--bg);
  color: var(--text);
  line-height:1.6;
  font-size: 18px;
}

a{ color: var(--accent); }
a:hover{ color: #a8c4ff; }

.container{
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 18px;
}

.header{
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(11,16,32,0.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 12px 0;
}

.brand{
  display:flex;
  flex-direction:column;
  gap:2px;
}

.brand a{
  text-decoration:none;
  color: var(--text);
  font-weight: 750;
  letter-spacing: 0.2px;
}

.brand small{
  color: var(--muted);
  font-size: 0.9rem;
}

.nav{
  display:flex;
  align-items:center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content:flex-end;
}

.nav-link{
  text-decoration:none;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text);
  background: transparent;
  font-size: 0.95rem;
}

.nav-link:hover{
  border-color: var(--border);
  background: rgba(255,255,255,0.06);
}

.nav-link.active{
  background: rgba(122,167,255,0.18);
  border-color: rgba(122,167,255,0.35);
}

.nav-details{
  position: relative;
}

.nav-details summary{
  list-style:none;
  cursor:pointer;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text);
  font-size: 0.95rem;
}

.nav-details summary:hover{
  border-color: var(--border);
  background: rgba(255,255,255,0.06);
}

.nav-details[open] summary{
  background: rgba(96,225,194,0.12);
  border-color: rgba(96,225,194,0.28);
}

.nav-dropdown{
  position:absolute;
  right:0;
  top: 44px;
  min-width: 260px;
  background: rgba(19,29,58,0.98);
  border:1px solid var(--border);
  border-radius: 14px;
  padding: 10px;
  box-shadow: var(--shadow);
}

.nav-dropdown .nav-link{
  display:block;
  margin: 4px 0;
  border-radius: 12px;
}

main{
  padding: 28px 0 54px;
}

.hero{
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(122,167,255,0.16), rgba(96,225,194,0.10));
  box-shadow: var(--shadow);
  padding: 26px;
  margin: 20px 0 18px;
}

.hero h1{
  margin-top:0;
  font-size: 2.1rem;
  line-height: 1.25;
}

.hero p{
  color: var(--muted);
  max-width: 70ch;
}

.hero-actions{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  text-decoration:none;
  font-weight: 650;
  font-size: 0.95rem;
}

.btn.primary{
  border-color: rgba(122,167,255,0.45);
  background: rgba(122,167,255,0.20);
}

.btn.secondary{
  border-color: rgba(96,225,194,0.40);
  background: rgba(96,225,194,0.16);
}

.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
  margin: 18px 0;
}

.card{
  grid-column: span 4;
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(19,29,58,0.86);
  padding: 16px 16px 14px;
  box-shadow: 0 8px 18px rgba(0,0,0,0.25);
}

.card h3{
  margin:0 0 6px;
  font-size:1.1rem;
}

.card p{
  margin:0 0 10px;
  color: var(--muted);
  font-size: 0.95rem;
}

.card a{
  display:inline-block;
  margin-top: 2px;
  text-decoration:none;
  font-weight: 650;
}

.content h1, .content h2, .content h3{
  scroll-margin-top: 90px;
}

.content h1{
  font-size: 2rem;
  line-height:1.25;
  margin-top: 0;
}

.content h2{
  margin-top: 28px;
  font-size: 1.35rem;
}

.content h3{
  margin-top: 18px;
  font-size: 1.15rem;
  color: #dce3ff;
}

.content p{
  color: var(--text);
  max-width: 85ch;
}

.content ul, .content ol{
  max-width: 85ch;
}

.callout{
  border:1px solid var(--border);
  border-radius: 16px;
  padding: 14px 14px 12px;
  margin: 14px 0;
  background: rgba(255,255,255,0.04);
}

.callout-title{
  font-weight: 800;
  margin-bottom: 6px;
}

.callout-note{ border-left: 6px solid rgba(122,167,255,0.7); }
.callout-tip{ border-left: 6px solid rgba(96,225,194,0.7); }
.callout-warn{ border-left: 6px solid rgba(255,174,76,0.8); }
.callout-humour{ border-left: 6px solid rgba(255,255,255,0.35); }

.prompt-block{
  border:1px solid var(--border);
  border-radius: 16px;
  background: rgba(0,0,0,0.22);
  margin: 14px 0;
  overflow:hidden;
}

.prompt-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(255,255,255,0.06);
  border-bottom: 1px solid var(--border);
}

.prompt-title{
  font-weight: 800;
  font-size: 1rem;
}

.copy-btn{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  cursor:pointer;
  font-weight: 700;
  font-size: 0.9rem;
}

.copy-btn:hover{
  background: rgba(255,255,255,0.10);
}

.prompt-block pre{
  margin:0;
  padding: 12px;
  overflow:auto;
}

.prompt-block code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.95rem;
  color: #e9efff;
}

.screenshot-block{
  border:1px dashed rgba(255,255,255,0.28);
  border-radius: 16px;
  padding: 12px 12px 10px;
  margin: 14px 0;
  background: rgba(255,255,255,0.03);
  max-width: 85ch;
}

.screenshot-title{
  font-weight: 800;
  margin-bottom: 6px;
}

.screenshot-meta{
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.screenshot-notes{
  color: var(--text);
  font-size: 0.95rem;
}

.table-wrap{
  overflow-x: auto;
  max-width: 100%;
  border-radius: 16px;
  border:1px solid var(--border);
  background: rgba(0,0,0,0.18);
  margin: 14px 0;
}

table{
  width:100%;
  border-collapse: collapse;
  min-width: 680px;
}

caption{
  caption-side: top;
  text-align:left;
  padding: 12px 12px 0;
  color: var(--muted);
  font-size: 0.95rem;
}

th, td{
  border-bottom:1px solid rgba(255,255,255,0.10);
  padding: 10px 12px;
  text-align:left;
  vertical-align: top;
}

th{
  background: rgba(255,255,255,0.06);
  font-weight: 800;
}

.prev-next{
  display:flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 22px;
  border-top: 1px solid rgba(255,255,255,0.10);
  padding-top: 16px;
}

.pn-btn{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  text-decoration:none;
  border:1px solid var(--border);
  background: rgba(255,255,255,0.06);
  padding: 10px 12px;
  border-radius: 999px;
  color: var(--text);
  font-weight: 750;
  max-width: 48%;
}

.pn-btn:hover{ background: rgba(255,255,255,0.10); }

.footer{
  border-top:1px solid rgba(255,255,255,0.10);
  padding: 22px 0 30px;
  color: var(--muted);
  font-size: 0.95rem;
}

.toast{
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(19,29,58,0.98);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  color: var(--text);
  font-weight: 650;
}

.toast.show{
  opacity: 1;
}

/* Responsive */
@media (max-width: 980px){
  .card{ grid-column: span 6; }
  table{ min-width: 620px; }
}

@media (max-width: 680px){
  html,body{ font-size: 17px; }
  .header-inner{ flex-direction: column; align-items: flex-start; }
  .nav{ justify-content: flex-start; }
  .nav-dropdown{ right:auto; left:0; }
  .card{ grid-column: span 12; }
  table{ min-width: 520px; }
  .pn-btn{ max-width: 100%; flex: 1; justify-content: center; }
  .prev-next{ flex-direction: column; }
}

/* === Logo header === */
.brand-link{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  color: var(--text);
}
.brand-logo{
  height: 44px;
  width: auto;
  display: block;
}

/* === Screenshot figures === */
figure.screenshot{
  margin: 18px 0;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
}
figure.screenshot img{
  width: 50%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 14px;
  background: #ffffff;
  border: 1px solid rgba(0,0,0,0.18);
}
figure.screenshot figcaption{
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.4;
}
.screenshot-link{
  display:block;
  text-decoration:none;
}

/* Tidy up old placeholder styling (kept for backwards compatibility) */
.screenshot-block{
  border-style: solid;
  border-color: rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.04);
}

/* Slightly nicer footer */
.footer{
  background: rgba(255,255,255,0.03);
}

/* === Collapsing header on scroll (better on mobile) === */
.header.is-compact{
  background: rgba(11,16,32,0.90);
}

.header.is-compact .header-inner{
  padding: 6px 0;
}

.header.is-compact .brand small{
  display: none;
}

.header.is-compact .nav{
  gap: 8px;
}

@media (max-width: 680px){
  .header.is-compact .header-inner{
    flex-direction: row;
    align-items: center;
  }

  .header.is-compact .nav{
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
    max-width: 100%;
  }

  .header.is-compact .nav::-webkit-scrollbar{
    display: none;
  }

  .header.is-compact .nav-link,
  .header.is-compact .nav-details summary{
    padding: 6px 10px;
    font-size: 0.9rem;
    white-space: nowrap;
  }

  .header.is-compact .nav-dropdown{
    top: 38px;
  }
}

/* === Mobile nav scroll hint (makes the horizontal menu obvious) === */
@media (max-width: 680px){
  /* Only show the hint when the header is compact AND the nav actually overflows. */
  .header.is-compact.nav-can-scroll .nav{
    padding-right: 44px; /* give the hint space so it doesn't sit on top of links */
  }

  /* Right-side fade + chevron (only when there's more content to the right). */
  .header.is-compact.nav-can-scroll:not(.nav-at-end) .nav{
    background-image:
      linear-gradient(to left,
        rgba(11,16,32,0.00) 0%,
        rgba(11,16,32,0.00) 40%,
        rgba(11,16,32,0.92) 100%),
      url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='20'%20height='20'%20viewBox='0%200%2024%2024'%3E%3Cpath%20fill='%23c8d0ff'%20d='M9%206l6%206-6%206'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: 60px 100%, 18px 18px;
    background-position: right top, right 14px center;
    box-shadow: inset -18px 0 16px -14px rgba(11,16,32,0.95);
  }

  /* If you’ve scrolled away from the start, add a subtle left fade too (so people know it scrolls both ways). */
  .header.is-compact.nav-can-scroll:not(.nav-at-start):not(.nav-at-end) .nav{
    box-shadow:
      inset 18px 0 16px -14px rgba(11,16,32,0.95),
      inset -18px 0 16px -14px rgba(11,16,32,0.95);
  }

  /* At the end: remove the right hint and just keep a gentle left fade (optional). */
  .header.is-compact.nav-can-scroll.nav-at-end:not(.nav-at-start) .nav{
    background-image: none;
    padding-right: 0;
    box-shadow: inset 18px 0 16px -14px rgba(11,16,32,0.95);
  }

  /* If the menu fits (no overflow), remove extra padding/decoration. */
  .header.is-compact:not(.nav-can-scroll) .nav{
    background-image: none;
    padding-right: 0;
    box-shadow: none;
  }
}