/* intro.css — self-contained Command Center intro (no dashboard.css dependency) */
:root {
  color-scheme: dark;
  --bg0: #030810;
  --bg1: #071222;
  --panel: rgba(8, 28, 48, 0.72);
  --panel-edge: rgba(61, 224, 255, 0.22);
  --cyan: #3de0ff;
  --cyan-dim: rgba(61, 224, 255, 0.55);
  --gold: #e8b84a;
  --ok: #3dff9a;
  --warn: #ffb020;
  --danger: #ff4d6a;
  --text: #d5e4f2;
  --muted: #7f92a8;
  --mono: "Share Tech Mono", ui-monospace, Consolas, monospace;
  --display: Orbitron, system-ui, sans-serif;
  --body: "Segoe UI", system-ui, sans-serif;
  --radius: 12px;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(61, 224, 255, 0.08);
  --max: 58rem;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--body);
  font-size: 1.02rem;
  line-height: 1.55;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(0, 120, 200, 0.22), transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 80%, rgba(0, 80, 140, 0.12), transparent 50%),
    linear-gradient(180deg, var(--bg0), var(--bg1) 40%, #050c18);
}

a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: #9ef0ff; }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--cyan);
  color: #041018;
  padding: 0.5rem 0.75rem;
  z-index: 100;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

/* —— Hero —— */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--panel-edge);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(180deg, rgba(3, 10, 20, 0.35) 0%, rgba(3, 10, 20, 0.82) 70%, var(--bg0) 100%),
    url("https://jesbel17.dreamhosters.com/intro/command-center-home-office.jpg") center 30% / cover no-repeat;
  filter: saturate(1.05) contrast(1.05);
}

.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(61, 224, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 224, 255, 0.12) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 20%, transparent 95%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 4.5rem) clamp(1.1rem, 4vw, 2rem) 2.5rem;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 0.65rem;
  text-shadow: 0 0 18px rgba(61, 224, 255, 0.45);
}

.hero h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.65rem, 4.5vw, 2.65rem);
  letter-spacing: 0.06em;
  line-height: 1.12;
  margin: 0 0 0.75rem;
  color: #e8f7ff;
  text-shadow: 0 0 28px rgba(0, 180, 255, 0.35);
}

.hero__lede {
  max-width: 42rem;
  margin: 0 0 1.4rem;
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: #b8cfe0;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.5rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(61, 224, 255, 0.28);
  background: rgba(0, 30, 50, 0.55);
  color: var(--text);
}

.chip--gold { border-color: rgba(232, 184, 74, 0.4); color: var(--gold); }
.chip--ok { border-color: rgba(61, 255, 154, 0.35); color: var(--ok); }

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.6rem;
  padding: 0.55rem 1.1rem;
  border-radius: 8px;
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: box-shadow 0.2s, border-color 0.2s, background 0.2s;
}

.btn--primary {
  background: linear-gradient(135deg, rgba(0, 160, 220, 0.35), rgba(0, 80, 140, 0.55));
  border-color: rgba(61, 224, 255, 0.55);
  color: #e8fbff;
  box-shadow: 0 0 22px rgba(0, 180, 255, 0.2);
}
.btn--primary:hover {
  box-shadow: 0 0 32px rgba(0, 200, 255, 0.35);
  color: #fff;
}

.btn--ghost {
  background: rgba(5, 16, 28, 0.55);
  border-color: rgba(127, 146, 168, 0.35);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: var(--cyan-dim);
  color: #fff;
}

/* —— Layout —— */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem clamp(1.1rem, 4vw, 2rem) 3.5rem;
}

.toc {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  padding: 0.65rem 0;
  margin: 0 0 1.5rem;
  background: linear-gradient(180deg, rgba(3, 10, 20, 0.96), rgba(3, 10, 20, 0.88) 70%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(61, 224, 255, 0.1);
}

.toc a {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
  padding: 0.25rem 0.15rem;
}
.toc a:hover { color: var(--cyan); }

section {
  margin: 0 0 2.25rem;
  scroll-margin-top: 3.5rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: var(--radius);
  padding: clamp(1rem, 2.5vw, 1.45rem) clamp(1rem, 2.5vw, 1.5rem);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.panel + .panel { margin-top: 1rem; }

.panel h2 {
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 0.75rem;
}

.panel h3 {
  font-family: var(--display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 1.15rem 0 0.45rem;
}

.panel p { margin: 0 0 0.75rem; }
.panel p:last-child { margin-bottom: 0; }

.panel ul, .panel ol {
  margin: 0.35rem 0 0.85rem;
  padding-left: 1.25rem;
}
.panel li { margin: 0.3rem 0; }
.panel li::marker { color: var(--cyan-dim); }

code, .path {
  font-family: var(--mono);
  font-size: 0.88em;
  color: #9ed8ef;
  background: rgba(0, 20, 40, 0.55);
  border: 1px solid rgba(61, 224, 255, 0.12);
  border-radius: 4px;
  padding: 0.08em 0.35em;
}

.lead {
  font-size: 1.08rem;
  color: #c5d8e8;
}

/* —— Photo figure —— */
.figure {
  margin: 0 0 1.25rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--panel-edge);
  box-shadow: var(--shadow);
  background: #02060e;
}

.figure img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.figure figcaption {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding: 0.65rem 0.9rem;
  border-top: 1px solid rgba(61, 224, 255, 0.12);
  background: rgba(4, 14, 26, 0.9);
}

/* —— Cards grid —— */
.grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .grid--2 { grid-template-columns: 1fr 1fr; }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.card {
  background: rgba(6, 22, 38, 0.65);
  border: 1px solid rgba(61, 224, 255, 0.14);
  border-radius: 10px;
  padding: 0.9rem 1rem;
  height: 100%;
}

.card h3 {
  margin-top: 0;
  color: var(--cyan);
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: #b7c9d9;
}

.card .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.4rem;
}

/* —— Table —— */
.table-wrap {
  overflow-x: auto;
  margin: 0.5rem 0 0.25rem;
  border-radius: 8px;
  border: 1px solid rgba(61, 224, 255, 0.14);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th, td {
  text-align: left;
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid rgba(61, 224, 255, 0.1);
  vertical-align: top;
}

th {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(0, 30, 50, 0.45);
}

tr:last-child td { border-bottom: 0; }
tr:hover td { background: rgba(0, 80, 120, 0.08); }

/* —— Callouts —— */
.callout {
  border-left: 3px solid var(--cyan);
  background: rgba(0, 60, 100, 0.18);
  padding: 0.75rem 1rem;
  border-radius: 0 8px 8px 0;
  margin: 0.85rem 0;
}
.callout--gold { border-left-color: var(--gold); background: rgba(80, 55, 10, 0.2); }
.callout--ok { border-left-color: var(--ok); background: rgba(10, 60, 40, 0.22); }
.callout--warn { border-left-color: var(--warn); background: rgba(70, 40, 5, 0.22); }
.callout strong { color: #eef6ff; }

/* —— Timeline —— */
.steps {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  counter-reset: step;
}
.steps li {
  position: relative;
  padding: 0.65rem 0 0.65rem 2.75rem;
  border-left: 1px solid rgba(61, 224, 255, 0.2);
  margin-left: 0.85rem;
}
.steps li:last-child { border-left-color: transparent; }
.steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: -0.9rem;
  top: 0.55rem;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--bg0);
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(61, 224, 255, 0.45);
}

/* —— Footer —— */
.foot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.1rem, 4vw, 2rem) 2.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.foot a { color: var(--cyan-dim); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}