/* ============================================================
   localhost3000.love — a clear, funny field guide to localhost:3000
   Mobile-first. Dark "terminal at night" theme with a .love accent.
   ============================================================ */

:root {
  --bg:        #0b0e16;
  --bg-2:      #11151f;
  --panel:     #151b29;
  --panel-2:   #1b2233;
  --border:    #283146;
  --text:      #e8ecf4;
  --muted:     #9aa6bd;
  --faint:     #6b7588;

  --accent:    #5eead4;
  --accent-2:  #38bdf8;
  --amber:     #fbbf24;
  --love:      #ff5d8f;
  --love-2:    #f43f5e;
  --ok:        #5fe08a;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --maxw: 1000px;
  --radius: 16px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(94, 234, 212, 0.10), transparent 60%),
    radial-gradient(1100px 620px at 90% 0%, rgba(255, 93, 143, 0.12), transparent 55%),
    var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.mono { font-family: var(--mono); }
.nowrap { white-space: nowrap; }
.accent { color: var(--accent); }
.love { color: var(--love); }

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

code.inline, .inline {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.4em;
  color: var(--text);
  white-space: nowrap;
}

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: #04221d;
  padding: 0.6rem 1rem; border-radius: 0 0 10px 0; z-index: 100;
}
.skip-link:focus { left: 0; }

main > section {
  width: 100%; max-width: var(--maxw); margin: 0 auto;
  padding: clamp(2.25rem, 6.5vw, 4rem) clamp(1.1rem, 5vw, 2rem);
}

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 0.6rem;
  padding: 0.8rem clamp(1.1rem, 5vw, 2rem);
  background: rgba(11, 14, 22, 0.72);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand {
  font-family: var(--mono); font-weight: 700;
  font-size: clamp(0.88rem, 3.2vw, 1.05rem); color: var(--text);
  display: inline-flex; align-items: center; gap: 0.5rem; white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand-love { color: var(--love); }
.brand-dot {
  width: 9px; height: 9px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 0 0 rgba(95, 224, 138, 0.7); animation: pulse 2.4s infinite; flex-shrink: 0;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(95, 224, 138, 0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(95, 224, 138, 0); }
  100% { box-shadow: 0 0 0 0 rgba(95, 224, 138, 0); }
}
.header-cta {
  font-size: 0.78rem; font-weight: 600; color: var(--text);
  border: 1px solid var(--border); background: var(--panel);
  padding: 0.45rem 0.75rem; border-radius: 999px; text-align: right; line-height: 1.2;
}
.header-cta:hover { border-color: var(--love); color: #fff; text-decoration: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  font-weight: 700; font-size: 1rem; padding: 0.85rem 1.4rem;
  border-radius: 999px; border: 1px solid transparent; min-height: 48px;
  transition: transform 0.12s ease, box-shadow 0.2s ease; text-align: center;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  color: #2a0716; background: linear-gradient(135deg, var(--love), var(--love-2));
  box-shadow: 0 8px 24px -8px rgba(255, 93, 143, 0.6);
}
.btn-primary:hover { box-shadow: 0 12px 30px -8px rgba(255, 93, 143, 0.75); }
.btn-lg { font-size: 1.06rem; padding: 1rem 1.7rem; }

/* ---------- hero ---------- */
.hero { text-align: center; padding-top: clamp(1.5rem, 4.5vw, 2.5rem); padding-bottom: 0.5rem; }
.kicker {
  color: var(--faint); font-family: var(--mono);
  font-size: clamp(0.66rem, 2.4vw, 0.82rem);
  margin: 0.9rem auto 0; max-width: none;
}
@media (min-width: 540px) { .kicker { white-space: nowrap; } }
.hero-title {
  font-size: clamp(1.6rem, 6.4vw, 3.2rem); line-height: 1.12; letter-spacing: -0.02em;
  margin: 0 auto 1.6rem; max-width: 18ch;
}
.hero-title .mono { font-size: 0.92em; }

/* ---------- terminal ---------- */
.terminal {
  text-align: left; max-width: 600px; margin: 0 auto;
  background: #090c13; border: 1px solid var(--border); border-radius: 14px;
  overflow: hidden; box-shadow: 0 26px 60px -26px rgba(0, 0, 0, 0.85);
}
.terminal-bar {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.6rem 0.85rem; background: var(--panel); border-bottom: 1px solid var(--border);
}
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot-red { background: #ff5f56; } .dot-amber { background: #ffbd2e; } .dot-green { background: #27c93f; }
.terminal-title {
  margin-left: 0.4rem; color: var(--faint); font-family: var(--mono);
  font-size: 0.72rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1;
}
.replay {
  font-family: var(--mono); font-size: 0.72rem; color: var(--muted);
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 999px;
  padding: 0.25rem 0.6rem; cursor: pointer; white-space: nowrap;
}
.replay:hover { color: var(--text); border-color: var(--accent); }

.terminal-body {
  margin: 0; padding: 0.9rem 1rem 1rem;
  font-family: var(--mono); font-size: clamp(0.75rem, 2.8vw, 0.86rem);
  line-height: 1.5; color: #cdd6e4; min-height: 150px;
}
.tl { white-space: pre-wrap; word-break: break-word; }
.tp { color: var(--ok); }
.t-dim { color: var(--faint); }
.t-ok { color: var(--ok); }
.t-cmt { color: #7c89a3; }
.t-url { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

.tcursor {
  display: inline-block; width: 8px; height: 1.05em; background: var(--accent);
  margin-left: 1px; vertical-align: text-bottom; animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- section number badge (inline, on the heading row) ---------- */
.num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.85rem; height: 1.85rem; border-radius: 10px;
  font-family: var(--mono); font-weight: 700; font-size: 0.95rem;
  color: var(--accent); background: rgba(94, 234, 212, 0.1);
  border: 1px solid rgba(94, 234, 212, 0.32);
  vertical-align: middle; margin-right: 0.6rem; position: relative; top: -0.12em;
}
.num-amber { color: var(--amber); background: rgba(251, 191, 36, 0.1); border-color: rgba(251, 191, 36, 0.34); }
.neq { color: var(--love-2); font-weight: 700; }

/* ---------- explainer sections ---------- */
.explain-grid {
  display: grid; grid-template-columns: 1fr; gap: clamp(1.4rem, 5vw, 2.6rem); align-items: center;
}
.explain-copy h2 {
  font-size: clamp(1.5rem, 5.8vw, 2.2rem); line-height: 1.25; letter-spacing: -0.01em; margin: 0 0 0.5rem;
}
.explain-copy > p { color: var(--muted); margin: 0 0 1rem; font-size: clamp(1rem, 3.2vw, 1.1rem); }
.points { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.points li {
  position: relative; padding-left: 1.5rem; color: var(--muted); font-size: clamp(0.98rem, 3vw, 1.06rem);
}
.points li::before {
  content: "›"; position: absolute; left: 0; top: -0.04em;
  color: var(--accent); font-weight: 700; font-family: var(--mono);
}
.explain-alt .points li::before { color: var(--amber); }
.points strong { color: var(--text); }

/* loopback visual */
.explain-visual { display: flex; justify-content: center; }
.loop-card {
  width: 100%; max-width: 340px; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem; text-align: center;
}
.loop-stack { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }
.loop-chip { background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 0.6rem 1rem; font-size: 0.9rem; font-weight: 600; }
.loop-arrow { color: var(--accent); font-size: 1.5rem; line-height: 1; }
.loop-computer {
  width: 100%; max-width: 230px; background: var(--panel-2);
  border: 1px solid rgba(94, 234, 212, 0.4); border-radius: 12px; padding: 0.7rem 0.7rem 0.8rem;
}
.loop-computer-tag { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 0.55rem; }
.loop-ip { display: inline-block; font-family: var(--mono); color: var(--accent); background: rgba(94, 234, 212, 0.08); border: 1px dashed rgba(94, 234, 212, 0.4); border-radius: 8px; padding: 0.38rem 0.55rem; font-size: 0.76rem; white-space: nowrap; }
.loop-back { color: var(--faint); font-size: 0.82rem; margin: 1rem 0 0; }

/* ---------- doors (port visual) ---------- */
.building {
  width: 100%; max-width: 340px; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.4rem 1.2rem 1.1rem; text-align: center;
}
.building-tag { display: block; font-family: var(--mono); font-size: 0.78rem; color: var(--faint); margin-bottom: 1.1rem; }
.doors { display: flex; justify-content: center; align-items: flex-end; gap: 0.7rem; }
.door {
  position: relative; width: 56px; height: 92px;
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 7px 7px 0 0;
  display: flex; align-items: flex-start; justify-content: center; padding-top: 9px;
}
.door span { font-family: var(--mono); font-size: 0.7rem; color: var(--muted); }
.door::after { /* knob */
  content: ""; position: absolute; right: 7px; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; border-radius: 50%; background: var(--faint);
}
.door-hot {
  background: linear-gradient(180deg, var(--amber), #f59e0b); border-color: transparent;
  box-shadow: 0 10px 24px -8px rgba(251, 191, 36, 0.6);
}
.door-hot span { color: #2a0716; font-weight: 700; }
.door-hot::after { background: #2a0716; }
.building-floor { display: block; height: 3px; background: var(--border); border-radius: 2px; margin: 0 -0.2rem; }
.doors-cap { display: block; margin-top: 0.9rem; font-family: var(--mono); font-size: 0.78rem; color: var(--faint); }

/* ---------- loopback diagram (browser <-> laptop, never the internet) ---------- */
.netcard {
  width: 100%; max-width: 340px; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.4rem 1.2rem 1.2rem; text-align: center;
}
.net-cloud {
  font-family: var(--mono); font-size: 0.82rem; color: var(--faint);
  opacity: 0.6; display: inline-flex; align-items: center; gap: 0.4rem;
}
.net-cloud .net-emoji { font-size: 1.05rem; filter: grayscale(1); }
.net-x { color: var(--love-2); font-weight: 700; }
.net-cut {
  height: 26px; margin: 0.2rem auto; width: 2px;
  background: repeating-linear-gradient(var(--border) 0 4px, transparent 4px 8px);
  position: relative;
}
.net-cut span {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  color: var(--love-2); font-size: 0.85rem; background: var(--panel); padding: 0 2px;
}
.net-loop {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 0.9rem 0.8rem;
}
.net-node {
  display: flex; flex-direction: column; align-items: center; gap: 0.25rem;
  font-family: var(--mono); font-size: 0.72rem; color: var(--text); flex-shrink: 0; width: 64px;
}
.net-node .net-emoji { font-size: 1.5rem; filter: none; }
.net-wire {
  position: relative; flex: 1; height: 2px; align-self: center;
  background: linear-gradient(90deg, rgba(94,234,212,0.15), rgba(94,234,212,0.5), rgba(94,234,212,0.15));
  border-radius: 2px; margin: 0 4px;
}
.pkt {
  position: absolute; top: 50%; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px var(--accent);
  transform: translateY(-50%); left: 2px;
  animation: pkt 4.6s ease-in-out infinite;
}
/* a slow stream: dots drift to the laptop and back, over and over */
.pkt:nth-child(1) { animation-delay: 0s; }
.pkt:nth-child(2) { animation-delay: 0.55s; }
.pkt:nth-child(3) { animation-delay: 1.1s; }
.pkt:nth-child(4) { animation-delay: 1.65s; }
@keyframes pkt {
  0%   { left: 2px;  opacity: 0.3; }
  50%  { left: calc(100% - 9px); opacity: 1; }
  100% { left: 2px;  opacity: 0.3; }
}
.net-cap { display: block; margin-top: 0.9rem; font-family: var(--mono); font-size: 0.78rem; color: var(--accent); }

/* ---------- fact blocks ---------- */
.facts {
  display: grid; grid-template-columns: 1fr; gap: 0.9rem;
}
.fact {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}
.fact p { margin: 0.5rem 0 0; color: var(--muted); font-size: 0.98rem; }
.fact p strong { color: var(--text); }
.fact > code.inline { font-size: 1rem; }
.fact-lead {
  border-color: rgba(94, 234, 212, 0.34);
  background: linear-gradient(160deg, rgba(94, 234, 212, 0.08), var(--panel));
}
.fact-lead > code.inline { font-size: 1.25rem; color: var(--accent); }
.fact-lead p { font-size: 1.06rem; }

/* click-to-copy command chip */
.cmd {
  display: inline-flex; align-items: center; gap: 0.6rem; width: 100%; margin-top: 0.6rem;
  font-family: var(--mono); text-align: left;
  background: #0a0d15; border: 1px solid var(--border); border-radius: 8px;
  padding: 0.55rem 0.7rem; cursor: pointer; color: var(--accent); overflow-x: auto;
}
.cmd code { color: var(--accent); white-space: nowrap; font-size: 0.82rem; }
.cmd:hover { border-color: var(--accent); }
.copy-tag {
  margin-left: auto; font-size: 0.64rem; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--faint); border: 1px solid var(--border); border-radius: 999px;
  padding: 0.08rem 0.45rem; flex-shrink: 0;
}
.cmd.copied { border-color: var(--ok); }
.cmd.copied .copy-tag { color: var(--ok); border-color: var(--ok); }

/* ---------- hosting provider directory ---------- */
.hosting-section{display:flex;justify-content:center;padding-top:clamp(2rem,5vw,3.25rem)}
.provider-directory{width:100%;max-width:1000px}
.provider-directory-intro{margin:0 0 1rem}
.provider-directory-intro h2{margin:0;font-size:clamp(1.5rem,4vw,2rem);letter-spacing:-.025em}
.simple-provider-table-wrap{overflow:hidden;border:1px solid var(--border);border-radius:12px;background:rgba(13,17,27,.76)}
.simple-provider-table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:.84rem;line-height:1.48}
.simple-provider-table th,.simple-provider-table td{padding:.9rem .85rem;text-align:left;vertical-align:top;border-bottom:1px solid var(--border)}
.simple-provider-table thead th{color:var(--muted);background:#151b29;font:750 .68rem var(--mono);letter-spacing:.04em;text-transform:uppercase}
.simple-provider-table thead th:nth-child(1){width:29%}.simple-provider-table thead th:nth-child(2){width:27%}.simple-provider-table thead th:nth-child(3){width:44%}
.simple-provider-table tbody th{font-weight:700}.simple-provider-table tbody tr:last-child th,.simple-provider-table tbody tr:last-child td{border-bottom:0}
.simple-provider-table tbody tr:hover{background:rgba(94,234,212,.035)}
.provider-identity{display:grid;gap:.18rem}
.provider-name-line{display:flex;align-items:flex-start;flex-wrap:wrap;gap:.38rem}
.provider-name{display:inline-flex;align-items:center;gap:.38rem;color:var(--text);font-weight:800;text-decoration:none}
.provider-name:hover,.provider-url:hover{color:var(--accent);text-decoration:none}
.provider-favicon{width:18px;height:18px;flex:0 0 18px;border-radius:4px;object-fit:contain}
.featured-tag{display:inline-block;transform:translateY(-2px);padding:.08rem .38rem;color:var(--accent);background:rgba(94,234,212,.07);border:1px solid rgba(94,234,212,.28);border-radius:999px;font:750 .58rem var(--mono);letter-spacing:.04em;text-transform:uppercase}
.provider-url{width:max-content;max-width:100%;margin-left:1.6rem;color:var(--faint);font:600 .67rem var(--mono);overflow-wrap:anywhere}
.provider-cost{color:var(--muted)}
.provider-use-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.18rem .9rem;margin:0;padding-left:1.05rem;color:var(--muted)}
.provider-use-list li::marker{color:var(--accent)}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

@media(max-width:720px){
  .simple-provider-table-wrap{overflow:visible;border:0;background:transparent}
  .simple-provider-table,.simple-provider-table tbody{display:block}
  .simple-provider-table thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
  .simple-provider-table tr{display:block;margin-bottom:.65rem;background:rgba(13,17,27,.76);border:1px solid var(--border);border-radius:10px;overflow:hidden}
  .simple-provider-table th,.simple-provider-table td{display:grid;grid-template-columns:88px minmax(0,1fr);gap:.7rem;padding:.72rem .78rem;border-bottom:1px solid var(--border)}
  .simple-provider-table th::before,.simple-provider-table td::before{content:attr(data-label);color:var(--faint);font:750 .61rem var(--mono);letter-spacing:.04em;text-transform:uppercase}
  .simple-provider-table tbody tr:last-child th,.simple-provider-table tbody tr:last-child td{border-bottom:1px solid var(--border)}
  .simple-provider-table tr th:last-child,.simple-provider-table tr td:last-child{border-bottom:0}
  .provider-identity{min-width:0}
  .provider-name-line{align-items:flex-start}
  .provider-url{margin-left:1.6rem}
  .provider-use-list{grid-template-columns:1fr;gap:.14rem}
}


/* ---------- disclosure ---------- */
.disclosure { padding-top: clamp(1.5rem, 5vw, 2.5rem); }
.disclosure-line {
  max-width: 640px; margin: 0 auto; text-align: center;
  color: var(--muted); font-size: 0.92rem;
  background: var(--panel); border: 1px dashed var(--border);
  border-radius: 999px; padding: 0.7rem 1.2rem;
}
.disclosure-line strong { color: var(--text); }

/* ---------- footer ---------- */
.site-footer { text-align: center; padding: 2.25rem 1.25rem 3rem; border-top: 1px solid var(--border); color: var(--muted); }
.foot-brand { font-family: var(--mono); font-weight: 700; font-size: 1.05rem; color: var(--text); margin: 0 0 0.4rem; }
.foot-fine { color: var(--faint); font-size: 0.82rem; font-family: var(--mono); margin: 0; }

/* ---------- larger screens ---------- */
@media (min-width: 760px) {
  .explain-grid { grid-template-columns: 1.1fr 0.9fr; }
  .explain-alt .explain-grid { grid-template-columns: 0.9fr 1.1fr; }
  .explain-alt .explain-copy { order: 2; }
  .explain-alt .explain-visual { order: 1; }
  .facts { grid-template-columns: 1fr 1fr; }
  .fact-lead { grid-column: 1 / -1; display: flex; align-items: center; gap: 1rem; }
  .fact-lead p { margin: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after { animation: none !important; scroll-behavior: auto !important; }
  .btn:hover { transform: none; }
  .tcursor { animation: none; }
  /* loopback packets: show them parked along the wire instead of moving */
  .pkt:nth-child(1) { left: 12%; }
  .pkt:nth-child(2) { left: 38%; }
  .pkt:nth-child(3) { left: 62%; }
  .pkt:nth-child(4) { left: 86%; }
}


/* ---------- search-intent answer and topic navigation ---------- */
.hero-answer{max-width:680px;margin:-.65rem auto 1.35rem;color:var(--muted);font-size:clamp(.98rem,2.4vw,1.08rem);line-height:1.65}
.hero-answer strong{color:var(--text);font-family:var(--mono)}
.topic-nav{display:flex;flex-wrap:wrap;justify-content:center;gap:.45rem;margin:1.1rem auto 0}
.topic-nav a{padding:.34rem .62rem;color:var(--muted);background:rgba(21,27,41,.7);border:1px solid var(--border);border-radius:999px;font:700 .69rem var(--mono)}
.topic-nav a:hover{color:var(--accent);border-color:var(--accent);text-decoration:none}
@media(max-width:680px){.hero-answer{margin-top:-.85rem}.topic-nav{gap:.35rem}.topic-nav a{font-size:.64rem}}