/* ============================================================
   faisalmohamed.us — "All Frequencies" theme
   Dark space / RF spectrum design system
   ============================================================ */

:root {
  --bg: #060a14;
  --bg-2: #0a1020;
  --bg-3: #0e1730;
  --panel: rgba(14, 23, 48, 0.72);
  --line: rgba(57, 213, 255, 0.16);
  --cyan: #39d5ff;
  --cyan-dim: rgba(57, 213, 255, 0.55);
  --amber: #ffb340;
  --green: #3dffb0;
  --text: #dbe6f5;
  --text-dim: #8fa3c0;
  --mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --sans: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius: 14px;
  --maxw: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: var(--cyan); color: #04121c; }

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Starfield canvas ---------- */
#starfield {
  position: fixed;
  inset: 0;
  z-index: -1;
  display: block;
}

/* ---------- Layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

section { padding: 72px 0; position: relative; }

/* ---------- Header / nav ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(6, 10, 20, 0.78);
  border-bottom: 1px solid var(--line);
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
}
.logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo:hover { text-decoration: none; }
.logo .wave { color: var(--cyan); }
.logo .dot { color: var(--amber); }

nav.main { display: flex; gap: 4px; align-items: center; }
nav.main a {
  color: var(--text-dim);
  font-size: 0.92rem;
  padding: 8px 13px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
nav.main a:hover { color: var(--cyan); background: rgba(57,213,255,0.07); text-decoration: none; }
nav.main a.active { color: var(--cyan); }
nav.main a.cta {
  color: #04121c;
  background: var(--cyan);
  font-weight: 600;
  margin-left: 8px;
}
nav.main a.cta:hover { background: #6ee2ff; color: #04121c; }

/* Mobile nav */
#navToggle { display: none; background: none; border: 1px solid var(--line); color: var(--cyan); font-size: 1.2rem; padding: 4px 12px; border-radius: 8px; cursor: pointer; }
@media (max-width: 860px) {
  #navToggle { display: block; }
  nav.main {
    display: none;
    position: absolute;
    top: 62px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(6,10,20,0.97);
    border-bottom: 1px solid var(--line);
    padding: 12px 20px 18px;
  }
  nav.main.open { display: flex; }
  nav.main a.cta { margin-left: 0; text-align: center; margin-top: 6px; }
}

/* ---------- Type ---------- */
h1, h2, h3 { line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 18px; }
h3 { font-size: 1.15rem; }

.kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 12px;
}
.lead { color: var(--text-dim); font-size: 1.08rem; max-width: 700px; }

/* ---------- Hero ---------- */
.hero {
  min-height: calc(100vh - 62px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px 0 0;
}
.hero .status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--green);
  border: 1px solid rgba(61,255,176,0.25);
  background: rgba(61,255,176,0.06);
  padding: 5px 14px;
  border-radius: 100px;
  width: fit-content;
  margin-bottom: 22px;
}
.hero .status::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }

.hero h1 .accent { color: var(--cyan); }
.hero .tagline {
  font-family: var(--mono);
  color: var(--amber);
  margin: 14px 0 10px;
  font-size: clamp(0.95rem, 2vw, 1.15rem);
}
.hero .lead { margin-bottom: 30px; }

.btn-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn.primary { background: var(--cyan); color: #04121c; }
.btn.primary:hover { box-shadow: 0 6px 24px rgba(57,213,255,0.35); }
.btn.ghost { border-color: var(--line); color: var(--cyan); background: rgba(57,213,255,0.05); }
.btn.amber { background: var(--amber); color: #1c1204; }
.btn.amber:hover { box-shadow: 0 6px 24px rgba(255,179,64,0.35); }

/* ---------- Spectrum analyzer hero nav ---------- */
.spectrum-box {
  margin-top: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px 18px 8px;
  position: relative;
}
.spectrum-box .label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}
#spectrum { width: 100%; height: 190px; display: block; cursor: pointer; }
.spectrum-hint {
  text-align: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  padding: 6px 0 8px;
}
#bandTip {
  position: absolute;
  pointer-events: none;
  background: #04121c;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 8px;
  transform: translate(-50%, -130%);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 5;
}

/* ---------- Employer strip ---------- */
.employers {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  align-items: center;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  margin-top: 40px;
}
.employers span {
  font-family: var(--mono);
  color: var(--text-dim);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}
.employers .lbl { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--amber); }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 20px; }
.grid.cols-3 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(auto-fill, minmax(400px, 1fr)); }
@media (max-width: 640px) { .grid.cols-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(57,213,255,0.45);
  box-shadow: 0 10px 40px rgba(57,213,255,0.08);
}
.card .freq {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--amber);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--text-dim); font-size: 0.93rem; }
.card .tools {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--cyan-dim);
  border: 1px solid var(--line);
  padding: 3px 9px;
  border-radius: 100px;
}

/* RSSI signal-strength meter */
.rssi { display: flex; gap: 4px; align-items: flex-end; height: 26px; margin-top: 16px; }
.rssi i {
  width: 9px;
  background: rgba(57,213,255,0.15);
  border-radius: 2px;
  transition: background 0.4s;
}
.rssi i:nth-child(1){height:20%} .rssi i:nth-child(2){height:40%}
.rssi i:nth-child(3){height:60%} .rssi i:nth-child(4){height:80%}
.rssi i:nth-child(5){height:100%}
.rssi.lit i.on { background: var(--green); box-shadow: 0 0 8px rgba(61,255,176,0.5); }
.rssi-lbl { font-family: var(--mono); font-size: 0.68rem; color: var(--text-dim); margin-left: 8px; }

/* ---------- Waveform divider ---------- */
.wave-divider { width: 100%; height: 46px; overflow: hidden; opacity: 0.5; }
.wave-divider svg { width: 200%; height: 100%; animation: waveslide 9s linear infinite; }
@keyframes waveslide { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .wave-divider svg { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Timeline ---------- */
.timeline { position: relative; margin-left: 18px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--cyan), var(--amber));
  opacity: 0.35;
}
.tnode {
  position: relative;
  padding: 0 0 42px 34px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s, transform 0.6s;
}
.tnode.vis { opacity: 1; transform: none; }
.tnode::before {
  content: "";
  position: absolute;
  left: -7px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--cyan);
  box-shadow: 0 0 12px rgba(57,213,255,0.6);
}
.tnode .period { font-family: var(--mono); font-size: 0.78rem; color: var(--amber); }
.tnode h3 { margin: 4px 0 2px; }
.tnode .org { color: var(--cyan); font-size: 0.95rem; margin-bottom: 10px; }
.tnode ul { margin: 8px 0 0 18px; color: var(--text-dim); font-size: 0.93rem; }
.tnode li { margin-bottom: 5px; }

/* ---------- Filter bar ---------- */
.filterbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.filterbar button {
  font-family: var(--mono);
  font-size: 0.8rem;
  background: none;
  border: 1px solid var(--line);
  color: var(--text-dim);
  padding: 7px 16px;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s;
}
.filterbar button:hover { color: var(--cyan); border-color: var(--cyan-dim); }
.filterbar button.active { background: var(--cyan); color: #04121c; border-color: var(--cyan); font-weight: 700; }

/* ---------- Placeholder blocks ---------- */
.placeholder {
  border: 2px dashed rgba(255,179,64,0.35);
  border-radius: var(--radius);
  padding: 34px 26px;
  text-align: center;
  color: var(--text-dim);
  background: rgba(255,179,64,0.03);
}
.placeholder .ph-icon { font-size: 1.6rem; margin-bottom: 8px; display: block; }
.placeholder strong { color: var(--amber); font-family: var(--mono); font-size: 0.85rem; letter-spacing: 0.1em; }

/* ---------- Forms ---------- */
form.contact { display: grid; gap: 14px; max-width: 560px; }
form.contact input, form.contact textarea {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px 16px;
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.95rem;
}
form.contact input:focus, form.contact textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(57,213,255,0.12);
}

/* ---------- Blog list ---------- */
.post-item {
  display: block;
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  margin-bottom: 16px;
  transition: transform 0.2s, border-color 0.2s;
  color: var(--text);
}
.post-item:hover { transform: translateX(6px); border-color: var(--cyan-dim); text-decoration: none; }
.post-item .meta { font-family: var(--mono); font-size: 0.75rem; color: var(--amber); margin-bottom: 6px; }
.post-item p { color: var(--text-dim); font-size: 0.92rem; margin-top: 6px; }

/* Article body */
.article { max-width: 760px; }
.article h1 { margin-bottom: 8px; }
.article .meta { font-family: var(--mono); color: var(--amber); font-size: 0.8rem; margin-bottom: 30px; }
.article-body h2 { margin-top: 34px; }
.article-body p { margin: 16px 0; color: var(--text); }
.article-body code { font-family: var(--mono); background: var(--bg-3); padding: 2px 7px; border-radius: 6px; font-size: 0.88em; color: var(--cyan); }
.article-body pre { background: var(--bg-3); padding: 18px; border-radius: 10px; overflow-x: auto; border: 1px solid var(--line); }
.article-body blockquote { border-left: 3px solid var(--amber); padding-left: 18px; color: var(--text-dim); margin: 18px 0; }
.article-body ul, .article-body ol { margin: 14px 0 14px 24px; color: var(--text); }

/* ---------- Gallery ---------- */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.gallery .ph-tile {
  aspect-ratio: 4/3;
  border: 2px dashed rgba(255,179,64,0.3);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.75rem;
  background: rgba(255,179,64,0.02);
}

/* ---------- Stats strip ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 18px; }
.stat {
  text-align: center;
  padding: 22px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.stat .num { font-family: var(--mono); font-size: 1.9rem; font-weight: 700; color: var(--cyan); }
.stat .lbl { font-size: 0.8rem; color: var(--text-dim); margin-top: 4px; }

/* ---------- Footer ---------- */
footer.site {
  border-top: 1px solid var(--line);
  padding: 44px 0 34px;
  margin-top: 40px;
  background: rgba(6,10,20,0.6);
}
footer.site .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px; align-items: center; }
footer.site .fine { font-family: var(--mono); font-size: 0.72rem; color: var(--text-dim); }
footer.site nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer.site nav a { color: var(--text-dim); font-size: 0.85rem; }
footer.site nav a:hover { color: var(--cyan); }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s, transform 0.7s; }
.reveal.vis { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .tnode { opacity: 1 !important; transform: none !important; transition: none; }
}

/* ---------- 404 terminal ---------- */
.terminal {
  max-width: 640px;
  margin: 10vh auto;
  background: #030710;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-family: var(--mono);
  overflow: hidden;
}
.terminal .bar { background: var(--bg-3); padding: 8px 14px; font-size: 0.75rem; color: var(--text-dim); }
.terminal .body { padding: 26px; font-size: 0.9rem; line-height: 1.9; }
.terminal .body .err { color: #ff5c6a; }
.terminal .body .ok { color: var(--green); }
.terminal .cursor { display: inline-block; width: 9px; height: 17px; background: var(--cyan); animation: pulse 1s infinite; vertical-align: text-bottom; }