/* =========================================================
   ASHRITH_OS - Portfolio Design System
   "Operating system for real businesses"
   ========================================================= */

:root{
  /* Core surfaces */
  --bg: #080b10;
  --bg-alt: #0b0f16;
  --surface: #10151d;
  --surface-2: #161d27;
  --surface-3: #1c2430;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);

  /* Text */
  --text: #eef1f6;
  --text-dim: #9aa5b8;
  --text-faint: #647089;

  /* Signal colors */
  --accent: #4d8dff;       /* electric blue */
  --accent-soft: rgba(77,141,255,0.14);
  --violet: #9b7bff;       /* secondary accent */
  --violet-soft: rgba(155,123,255,0.14);
  --teal: #2bd9b0;         /* success / metrics */
  --teal-soft: rgba(43,217,176,0.14);
  --amber: #ffb648;        /* warning / highlight */
  --red: #ff5c72;

  /* Gradients */
  --grad-signal: linear-gradient(120deg, var(--accent), var(--violet));
  --grad-teal: linear-gradient(120deg, var(--teal), var(--accent));

  /* Type */
  --font-head: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', monospace;

  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1240px;

  --shadow-glow: 0 0 0 1px var(--border), 0 20px 60px rgba(0,0,0,0.45);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Background grid texture */
body::before{
  content:"";
  position: fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, rgba(0,0,0,0.9), transparent 70%);
  pointer-events:none;
  z-index:0;
  opacity:.6;
}

a{ color: inherit; text-decoration: none; }
img{ max-width:100%; display:block; }
h1,h2,h3,h4{ font-family: var(--font-head); margin:0; letter-spacing:-0.01em; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; cursor:pointer; }

.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index:1;
}

.mono{ font-family: var(--font-mono); letter-spacing: 0.04em; }

/* ============ SYSTEM STATUS BAR (utility strip) ============ */
.status-strip{
  background: #05070b;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-faint);
  padding: 7px 0;
  letter-spacing: 0.03em;
}
.status-strip .container{ display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap; }
.status-strip .dot{ display:inline-block; width:6px; height:6px; border-radius:50%; background: var(--teal); margin-right:7px; box-shadow: 0 0 8px var(--teal); animation: pulse 2s infinite; }
.status-strip .seg{ display:flex; align-items:center; gap:6px; }
.status-strip .sep{ opacity:.35; }

@keyframes pulse{ 0%,100%{opacity:1} 50%{opacity:.4} }

/* ============ NAV ============ */
header.navbar{
  position: sticky; top:0; z-index: 100;
  background: rgba(8,11,16,0.82);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding: 14px 0;
}
.brand{
  display:flex; align-items:center; gap:12px;
  font-family: var(--font-mono);
  font-weight:600; font-size:15px;
  color: var(--text);
}
.brand .brand-dot{ width:9px; height:9px; border-radius:2px; background: var(--grad-signal); box-shadow: 0 0 10px var(--accent); }
.brand .brand-sub{ color: var(--text-faint); font-size:11px; font-weight:400; margin-left:4px; }

.brand-avatar{
  width: clamp(38px, 2.6vw, 46px);
  height: clamp(38px, 2.6vw, 46px);
  border-radius:50%; object-fit:cover;
  object-position: 50% 15%;
  border:2px solid var(--accent);
  box-shadow: 0 0 14px rgba(77,141,255,0.35);
  flex-shrink:0;
  image-rendering: auto;
  -ms-interpolation-mode: bicubic;
}
.brand-avatar-sm{ width: clamp(24px, 1.8vw, 30px); height: clamp(24px, 1.8vw, 30px); }
.brand-text{ display:flex; flex-direction:column; line-height:1.2; }
.brand-name{ font-family: var(--font-head); font-weight:700; font-size:15.5px; color: var(--text); letter-spacing:-0.01em; }
.brand-text .brand-sub{ font-family: var(--font-mono); font-size:10px; color: var(--text-faint); letter-spacing:.05em; margin-left:0; }

/* Hero profile photo */
.hero-avatar-wrap{
  display:flex; align-items:center; gap:16px; margin-bottom:26px;
}
.hero-avatar{
  width: clamp(64px, 6vw, 96px);
  height: clamp(64px, 6vw, 96px);
  border-radius:50%; object-fit:cover;
  object-position: 50% 15%;
  border:2px solid var(--accent);
  box-shadow: 0 0 22px rgba(77,141,255,0.4);
  image-rendering: auto;
}
.hero-avatar-name{ font-family: var(--font-head); font-weight:700; font-size:18px; color: var(--text); }
.hero-avatar-role{ font-family: var(--font-mono); font-size:11.5px; color: var(--text-faint); text-transform:uppercase; letter-spacing:.05em; }

/* About page profile photo */
.about-photo{
  width: clamp(150px, 12vw, 220px);
  height: clamp(150px, 12vw, 220px);
  border-radius:50%; object-fit:cover;
  object-position: 50% 15%;
  border:3px solid var(--accent);
  box-shadow: 0 0 30px rgba(77,141,255,0.35);
  margin-bottom:26px;
  image-rendering: auto;
}

/* Recruiter brief avatar */
.rc-avatar-row{ display:flex; align-items:center; gap:18px; margin-bottom:8px; }
.rc-avatar{
  width: clamp(64px, 6vw, 96px);
  height: clamp(64px, 6vw, 96px);
  border-radius:50%; object-fit:cover;
  object-position: 50% 15%;
  border:2px solid var(--accent);
  box-shadow: 0 0 20px rgba(77,141,255,0.35);
  flex-shrink:0;
  image-rendering: auto;
}

.nav-links{ display:flex; align-items:center; gap:30px; }
.nav-links a{
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  position:relative;
  padding: 6px 0;
  transition: color .2s ease;
}
.nav-links a::before{ content: attr(data-idx); color: var(--accent); margin-right:6px; opacity:.8; }
.nav-links a:hover, .nav-links a.active{ color: var(--text); }
.nav-links a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px;
  background: var(--grad-signal); border-radius:2px;
}

.nav-cta{
  display:flex; align-items:center; gap:12px;
}
.recruiter-btn{
  display:flex; align-items:center; gap:8px;
  background: var(--accent-soft);
  border: 1px solid rgba(77,141,255,0.35);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 9px 14px;
  border-radius: 30px;
  transition: all .2s ease;
  white-space: nowrap;
}
.recruiter-btn:hover{ background: var(--accent); color:#04070d; box-shadow: 0 0 24px var(--accent-soft); }
.recruiter-btn .lightning{ font-size:13px; }

.nav-toggle{ display:none; background:none; border:1px solid var(--border); color:var(--text); width:40px; height:40px; border-radius:8px; align-items:center; justify-content:center; }

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 13px 22px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary{
  background: var(--grad-signal);
  color: #04060a;
  border: none;
  box-shadow: 0 8px 30px rgba(77,141,255,0.25);
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 12px 36px rgba(77,141,255,0.4); }
.btn-ghost{ background: var(--surface); color: var(--text); }
.btn-ghost:hover{ background: var(--surface-2); border-color: var(--accent); color:var(--accent); transform: translateY(-2px);}
.btn-outline{ background: transparent; color: var(--text-dim); }
.btn-outline:hover{ border-color: var(--text); color: var(--text); }
.btn-row{ display:flex; gap:14px; flex-wrap:wrap; }

/* ============ SECTION HELPERS ============ */
section{ position: relative; padding: 110px 0; }
.section-tight{ padding: 70px 0; }
.eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  display:flex; align-items:center; gap:10px;
  margin-bottom: 18px;
}
.eyebrow::before{ content:""; width: 22px; height:1px; background: var(--accent); }
.section-head{ max-width: 720px; margin-bottom: 56px; }
.section-head h2{ font-size: clamp(28px, 4vw, 42px); margin-bottom:16px; }
.section-head p{ color: var(--text-dim); font-size: 17px; }

/* ============ HERO ============ */
.hero{ padding: 90px 0 60px; overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items:center; }
.hero-kicker{
  font-family: var(--font-mono); font-size:13px; color: var(--teal);
  text-transform: uppercase; letter-spacing:0.14em; margin-bottom:22px;
  display:flex; align-items:center; gap:10px;
}
.hero-kicker .blink{ width:7px; height:7px; background: var(--teal); border-radius:50%; box-shadow:0 0 10px var(--teal); animation: pulse 1.6s infinite; }
.hero h1{ font-size: clamp(40px, 6vw, 68px); line-height: 1.04; margin-bottom: 24px; }
.hero h1 .grad{ background: var(--grad-signal); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero-sub{ font-size: 18px; color: var(--text-dim); max-width: 540px; margin-bottom: 36px; }
.hero-sub strong{ color: var(--text); }

.hero-visual{
  position:relative; background: var(--surface); border:1px solid var(--border);
  border-radius: 18px; padding: 26px; box-shadow: var(--shadow-glow);
}
.console-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; font-family:var(--font-mono); font-size:11px; color:var(--text-faint); }
.console-head .lights{ display:flex; gap:6px; }
.console-head .lights span{ width:9px; height:9px; border-radius:50%; display:inline-block; }
.console-head .lights span:nth-child(1){ background:#ff5c72; }
.console-head .lights span:nth-child(2){ background:#ffb648; }
.console-head .lights span:nth-child(3){ background:#2bd9b0; }

.node-map{ position:relative; height: 340px; }
.node{
  position:absolute; background: var(--surface-2); border:1px solid var(--border-strong);
  border-radius: 10px; padding: 10px 14px; font-family: var(--font-mono); font-size: 11.5px;
  color: var(--text-dim); display:flex; align-items:center; gap:8px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  animation: floaty 6s ease-in-out infinite;
}
.node .nd{ width:6px; height:6px; border-radius:50%; }
.node.n1{ top:0; left:10%; animation-delay:0s;}
.node.n2{ top:20%; right:2%; animation-delay:.6s;}
.node.n3{ top:45%; left:0; animation-delay:1.2s;}
.node.n4{ top:64%; right:14%; animation-delay:1.8s;}
.node.n5{ top:85%; left:20%; animation-delay:2.4s;}
.node.n6{ top:40%; left:38%; animation-delay:.3s; background: var(--accent-soft); border-color: rgba(77,141,255,.4); color:var(--accent);}
@keyframes floaty{ 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-8px);} }

.node-map svg{ position:absolute; inset:0; width:100%; height:100%; }
.node-map svg path{ stroke: rgba(77,141,255,0.35); stroke-width:1.2; fill:none; stroke-dasharray: 4 5; }

/* Metrics strip */
.metrics-strip{ border-top:1px solid var(--border); border-bottom:1px solid var(--border); background: var(--bg-alt); }
.metrics-grid{ display:grid; grid-template-columns: repeat(4,1fr); }
.metric-cell{ padding: 32px 24px; border-right:1px solid var(--border); text-align:left; }
.metric-cell:last-child{ border-right:none; }
.metric-num{ font-family: var(--font-head); font-size: clamp(28px,4vw,40px); font-weight:700; background: var(--grad-teal); -webkit-background-clip:text; background-clip:text; color:transparent; }
.metric-label{ margin-top:8px; font-family: var(--font-mono); font-size:12px; color: var(--text-dim); text-transform:uppercase; letter-spacing:.04em; }

/* ============ CARDS ============ */
.card{
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 30px; transition: all .3s ease; position:relative; overflow:hidden;
}
.card:hover{ border-color: var(--border-strong); transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.35); }
.card-tag{ font-family: var(--font-mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.08em; color:var(--accent); background: var(--accent-soft); padding:4px 10px; border-radius: 20px; display:inline-block; margin-bottom:16px; }

/* Case study cards */
.cases-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.case-card{ display:flex; flex-direction:column; gap: 18px; min-height: 380px; }
.case-card .case-num{ font-family:var(--font-mono); color: var(--text-faint); font-size:13px; }
.case-card h3{ font-size: 23px; line-height:1.25; }
.case-card p{ color: var(--text-dim); font-size:14.5px; flex-grow:1; }
.case-card .case-outcome{ font-family: var(--font-mono); font-size:13px; color: var(--teal); padding-top:14px; border-top:1px dashed var(--border); }
.case-card .case-link{ font-family: var(--font-mono); font-size:12.5px; color: var(--accent); display:flex; align-items:center; gap:8px; margin-top:6px; }
.case-card .case-link .arrow{ transition: transform .2s ease; }
.case-card:hover .case-link .arrow{ transform: translateX(5px); }

/* Operating model flow */
.flow{ display:grid; grid-template-columns: repeat(5,1fr); gap:16px; }
.flow-step{
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 24px 18px; text-align:left; position:relative; cursor:pointer; transition: all .3s ease;
}
.flow-step:hover, .flow-step.open{ border-color: var(--accent); background: var(--surface-2); }
.flow-step .fs-num{ font-family: var(--font-mono); color: var(--text-faint); font-size:12px; margin-bottom:14px; display:block; }
.flow-step h4{ font-size:16px; margin-bottom:10px; }
.flow-step p{ color: var(--text-dim); font-size:13px; max-height:0; overflow:hidden; opacity:0; transition: all .3s ease; }
.flow-step.open p{ max-height:200px; opacity:1; margin-top:6px; }
.flow-step .fs-connector{ position:absolute; top:50%; right:-16px; width:16px; height:1px; background:var(--border-strong); display:none; }

/* Proof wall */
.proof-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap:18px; }
.proof-cell{ background: var(--surface); border:1px solid var(--border); border-radius:12px; padding:22px; }
.proof-cell .pv{ font-family:var(--font-head); font-size:26px; color: var(--text); font-weight:700; }
.proof-cell .pl{ font-family: var(--font-mono); font-size:11.5px; color: var(--text-dim); margin-top:6px; text-transform:uppercase; letter-spacing:.03em;}
.tags-row{ display:flex; flex-wrap:wrap; gap:10px; margin-top:36px; }
.pill{ font-family: var(--font-mono); font-size:11.5px; padding:8px 14px; border-radius:20px; border:1px solid var(--border-strong); color: var(--text-dim); background: var(--surface); }

/* Artifact vault preview grid */
.vault-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap:18px; }
.vault-card{ background: var(--surface); border:1px solid var(--border); border-radius: 12px; padding:22px; min-height:150px; display:flex; flex-direction:column; justify-content:space-between; }
.vault-card .vc-icon{ font-size:22px; color: var(--violet); }
.vault-card h4{ font-size:14.5px; margin-top:14px; }
.vault-card span.vc-type{ font-family: var(--font-mono); font-size:10.5px; color: var(--text-faint); text-transform:uppercase; }

/* Personal edge */
.edge-block{ display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; align-items:center; }
.edge-quote{ font-family: var(--font-head); font-size: clamp(24px,3vw,32px); line-height:1.4; color: var(--text); }
.edge-quote span{ color: var(--accent); }

/* Footer CTA */
.cta-footer{
  background: radial-gradient(ellipse at top, rgba(77,141,255,0.12), transparent 60%), var(--surface);
  border-top:1px solid var(--border); text-align:center;
}
.cta-footer h2{ font-size: clamp(30px,5vw,50px); margin-bottom:22px; }
.cta-footer p{ color: var(--text-dim); font-size:17px; margin-bottom:36px; max-width:560px; margin-inline:auto; }

footer.site-footer{ background: #05070b; border-top:1px solid var(--border); padding: 50px 0 30px; }
.footer-grid{ display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:30px; }
.footer-links{ display:flex; gap:30px; flex-wrap:wrap; }
.footer-links a{ font-family:var(--font-mono); font-size:12px; color:var(--text-dim); text-transform:uppercase; letter-spacing:.05em; }
.footer-links a:hover{ color: var(--accent); }
.footer-bottom{ margin-top:40px; padding-top:24px; border-top:1px solid var(--border); display:flex; justify-content:space-between; color:var(--text-faint); font-family:var(--font-mono); font-size:11px; flex-wrap:wrap; gap:10px; }

/* ============ PAGE HEADER (sub pages) ============ */
.page-hero{ padding: 70px 0 50px; border-bottom:1px solid var(--border); }
.breadcrumb{ font-family: var(--font-mono); font-size:12px; color: var(--text-faint); margin-bottom:22px; display:flex; gap:8px; align-items:center; }
.breadcrumb a{ color: var(--text-dim); }
.breadcrumb a:hover{ color: var(--accent); }
.page-hero h1{ font-size: clamp(32px,5vw,54px); margin-bottom:18px; }
.page-hero p{ color: var(--text-dim); font-size:17px; max-width:640px; }

/* ============ CASE STUDY PAGE ============ */
.cs-meta-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap:20px; margin-top:40px; }
.cs-meta-cell{ border-left:2px solid var(--accent); padding-left:16px; }
.cs-meta-cell .lbl{ font-family:var(--font-mono); font-size:11px; color:var(--text-faint); text-transform:uppercase; margin-bottom:6px; }
.cs-meta-cell .val{ font-size:15px; color: var(--text); }

.cs-section{ padding: 70px 0; border-bottom:1px solid var(--border); }
.cs-section:last-of-type{ border-bottom:none; }
.cs-section .sec-label{ font-family:var(--font-mono); font-size:12px; color:var(--violet); text-transform:uppercase; letter-spacing:.12em; margin-bottom:16px; display:flex; align-items:center; gap:10px; }
.cs-section .sec-label::before{ content:""; width:22px; height:1px; background:var(--violet); }
.cs-section h2{ font-size: clamp(24px,3.4vw,34px); margin-bottom:22px; max-width:760px; }
.cs-two-col{ display:grid; grid-template-columns: 1fr 1fr; gap:40px; }
.cs-two-col p{ color: var(--text-dim); font-size:16px; }
.before-after{ display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:26px; }
.ba-card{ background: var(--surface); border:1px solid var(--border); border-radius:12px; padding:22px; }
.ba-card.before{ border-left:3px solid var(--red); }
.ba-card.after{ border-left:3px solid var(--teal); }
.ba-card .ba-title{ font-family: var(--font-mono); font-size:11.5px; text-transform:uppercase; margin-bottom:14px; color: var(--text-faint); }
.ba-card ul li{ font-size:14px; color: var(--text-dim); padding:6px 0; border-bottom:1px dashed var(--border); }
.ba-card ul li:last-child{ border-bottom:none; }

.constraint-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:18px; margin-top:10px;}
.constraint-cell{ background: var(--surface); border:1px solid var(--border); border-radius:10px; padding:18px; font-size:14px; color:var(--text-dim); }
.constraint-cell b{ color: var(--text); display:block; margin-bottom:6px; font-family:var(--font-mono); font-size:12.5px; text-transform:uppercase;}

.matrix-table{ width:100%; border-collapse: collapse; margin-top:20px; font-size:14px;}
.matrix-table th, .matrix-table td{ padding:14px 16px; border:1px solid var(--border); text-align:left; }
.matrix-table th{ background: var(--surface-2); font-family: var(--font-mono); font-size:11.5px; text-transform:uppercase; color: var(--text-dim); letter-spacing:.04em; }
.matrix-table td{ color: var(--text-dim); }
.matrix-table tr.winner td{ color: var(--text); background: rgba(43,217,176,0.06); }
.matrix-table tr.winner td:first-child{ border-left:3px solid var(--teal); }

.roadmap-phases{ display:flex; flex-direction:column; gap:0; margin-top:20px; }
.phase{ display:grid; grid-template-columns: 130px 1fr; gap:24px; padding:24px 0; border-top:1px solid var(--border); }
.phase:first-child{ border-top:none; }
.phase .ph-tag{ font-family: var(--font-mono); font-size:12px; color: var(--accent); }
.phase h4{ font-size:16px; margin-bottom:8px; }
.phase p{ color: var(--text-dim); font-size:14px; }

.outcome-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap:18px; margin-top:10px; }
.outcome-cell{ background: var(--surface-2); border:1px solid var(--border); border-radius:12px; padding:26px 20px; text-align:center; }
.outcome-cell .ov{ font-family:var(--font-head); font-size:32px; font-weight:700; background: var(--grad-teal); -webkit-background-clip:text; background-clip:text; color:transparent; }
.outcome-cell .ol{ font-family: var(--font-mono); font-size:11.5px; color: var(--text-dim); margin-top:8px; }

.lessons-list{ display:flex; flex-direction:column; gap:16px; margin-top:10px; }
.lesson{ display:flex; gap:16px; background: var(--surface); border:1px solid var(--border); border-radius:10px; padding:20px; }
.lesson .lq{ font-family: var(--font-mono); color: var(--violet); font-size:20px; }
.lesson p{ color: var(--text-dim); font-size:15px; }

.artifact-strip{ display:grid; grid-template-columns: repeat(3,1fr); gap:20px; margin-top:10px;}
.artifact-card{ background: var(--surface); border:1px dashed var(--border-strong); border-radius:12px; padding:24px; text-align:center; color: var(--text-dim); font-family: var(--font-mono); font-size:12.5px;}
.artifact-card .a-icon{ font-size:26px; margin-bottom:12px; color:var(--accent);}

.cs-nav-footer{ display:flex; justify-content:space-between; align-items:center; padding-top:30px; }

/* ============ PLAYBOOK ============ */
.module-list{ display:flex; flex-direction:column; gap:16px; }
.module-item{ background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); overflow:hidden; }
.module-head{ display:flex; align-items:center; justify-content:space-between; padding: 24px 28px; cursor:pointer; }
.module-head .mh-left{ display:flex; align-items:center; gap:20px; }
.module-head .m-num{ font-family: var(--font-mono); color: var(--accent); font-size:14px; }
.module-head h3{ font-size:19px; }
.module-head .m-chevron{ color: var(--text-faint); transition: transform .3s ease; }
.module-item.open .m-chevron{ transform: rotate(180deg); }
.module-body{ max-height:0; overflow:hidden; transition: max-height .35s ease; padding:0 28px; }
.module-item.open .module-body{ max-height: 400px; padding-bottom:28px; }
.module-body p{ color: var(--text-dim); font-size:15px; margin-bottom:14px; }
.module-body ul{ display:flex; flex-direction:column; gap:8px; }
.module-body ul li{ color: var(--text-dim); font-size:14px; padding-left:18px; position:relative; }
.module-body ul li::before{ content:"→"; position:absolute; left:0; color: var(--accent); }

/* Product teardown module (longer content needs more room when open) */
#teardown.module-item.open .module-body{ max-height: 3200px; }
.teardown-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:16px; margin-top:6px; }
.td-cell{ background: var(--surface-2); border:1px solid var(--border); border-radius:10px; padding:18px; }
.td-cell .td-label{ font-family: var(--font-mono); font-size:11px; color: var(--violet); text-transform:uppercase; letter-spacing:.04em; margin-bottom:8px; }
.td-cell p{ color: var(--text-dim); font-size:13.5px; margin-bottom:0; }

/* Practice case studies (self-practiced PM interview exercises, inside the teardown module) */
.practice-note{ border-top:1px dashed var(--border); padding-top:4px; }
.practice-note p{ margin-bottom:0; }
.practice-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:16px; margin-top:16px; }
.practice-card{ background: var(--surface-2); border:1px solid var(--border); border-radius:10px; padding:20px; display:flex; flex-direction:column; gap:10px; }
.practice-card .pc-tag{ font-family: var(--font-mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.06em; color: var(--teal); background: var(--teal-soft); padding:4px 10px; border-radius:20px; display:inline-block; width:fit-content; }
.practice-card h4{ font-size:15.5px; margin:0; }
.practice-card .pc-prompt{ font-family: var(--font-mono); font-size:11.5px; color: var(--text-faint); font-style:italic; line-height:1.5; }
.practice-card .pc-body{ color: var(--text-dim); font-size:13px; margin:0; flex-grow:1; }
.practice-card .pc-download{ margin-top:auto; font-size:12.5px; padding:10px 14px; text-align:center; }

/* ============ ARTIFACTS ============ */
.artifact-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:24px; }
.artifact-tile{ background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); overflow:hidden; cursor:pointer; transition: all .3s ease; }
.artifact-tile:hover{ border-color: var(--accent); transform: translateY(-4px); }
.artifact-thumb{ height:170px; background: var(--surface-2); display:flex; align-items:center; justify-content:center; font-size:34px; color: var(--violet); border-bottom:1px solid var(--border); position:relative; overflow:hidden;}
.artifact-thumb::after{ content:""; position:absolute; inset:0; background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px); background-size:16px 16px; }
.artifact-body{ padding:20px 22px; }
.artifact-body h4{ font-size:15.5px; margin-bottom:8px; }
.artifact-body p{ color: var(--text-dim); font-size:13.5px; }
.artifact-body .a-tag{ font-family: var(--font-mono); font-size:10.5px; color: var(--teal); text-transform:uppercase; margin-top:12px; display:block; }

/* Modal */
.modal-overlay{ position:fixed; inset:0; background: rgba(4,6,10,0.8); backdrop-filter: blur(6px); display:none; align-items:center; justify-content:center; z-index:200; padding:24px; }
.modal-overlay.active{ display:flex; }
.modal-box{ background: var(--surface-2); border:1px solid var(--border-strong); border-radius:16px; max-width:640px; width:100%; padding:36px; position:relative; max-height:85vh; overflow-y:auto; }
.modal-close{ position:absolute; top:18px; right:18px; background:none; border:1px solid var(--border); color: var(--text-dim); width:34px; height:34px; border-radius:8px; }
.modal-box h3{ font-size:22px; margin-bottom:16px; }
.modal-box p{ color: var(--text-dim); font-size:15px; margin-bottom:12px; }

/* ============ ABOUT ============ */
.about-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:60px; align-items:start; }
.timeline{ position:relative; padding-left:30px; }
.timeline::before{ content:""; position:absolute; left:5px; top:6px; bottom:6px; width:1px; background: var(--border-strong); }
.tl-item{ position:relative; padding-bottom:34px; }
.tl-item::before{ content:""; position:absolute; left:-30px; top:4px; width:11px; height:11px; border-radius:50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.tl-item .tl-year{ font-family: var(--font-mono); color: var(--text-faint); font-size:12px; margin-bottom:6px; }
.tl-item h4{ font-size:16.5px; margin-bottom:6px; }
.tl-item p{ color: var(--text-dim); font-size:14px; }

.care-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:16px; margin-top:20px;}
.care-cell{ background: var(--surface); border:1px solid var(--border); border-radius:10px; padding:18px; font-size:14px; color: var(--text-dim); }

/* ============ CONTACT ============ */
.contact-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:60px; }
.contact-form{ display:flex; flex-direction:column; gap:16px; }
.contact-form input, .contact-form textarea{
  background: var(--surface); border:1px solid var(--border); border-radius:10px; padding:14px 16px;
  color: var(--text); font-family: var(--font-body); font-size:14.5px; width:100%;
}
.contact-form input:focus, .contact-form textarea:focus{ outline:none; border-color: var(--accent); }
.contact-form label{ font-family: var(--font-mono); font-size:11.5px; text-transform:uppercase; color: var(--text-dim); margin-bottom:6px; display:block; }
.contact-channels{ display:flex; flex-direction:column; gap:16px; }
.channel{ display:flex; align-items:center; gap:16px; background: var(--surface); border:1px solid var(--border); border-radius:12px; padding:20px; transition: all .2s ease; }
.channel:hover{ border-color: var(--accent); }
.channel .ch-icon{ width:44px; height:44px; border-radius:10px; background: var(--accent-soft); color: var(--accent); display:flex; align-items:center; justify-content:center; font-size:18px; flex-shrink:0; }
.channel .ch-label{ font-family: var(--font-mono); font-size:11px; color: var(--text-faint); text-transform:uppercase; }
.channel .ch-value{ font-size:15px; color: var(--text); margin-top:2px; }

/* ============ RECRUITER MODE ============ */
.boot-screen{ min-height:100vh; display:flex; align-items:center; justify-content:center; padding:60px 20px; }
.boot-box{ max-width: 720px; width:100%; }
.boot-log{ font-family: var(--font-mono); font-size:13px; color: var(--teal); margin-bottom:30px; }
.boot-log div{ opacity:0; animation: typeIn .4s forwards; }
@keyframes typeIn{ to{ opacity:1; } }
.summary-card{ background: var(--surface); border:1px solid var(--border-strong); border-radius:16px; padding:40px; box-shadow: var(--shadow-glow); }
.summary-card h1{ font-size: clamp(26px,4vw,36px); margin-bottom: 10px; }
.summary-card .role{ color: var(--accent); font-family: var(--font-mono); font-size:13px; text-transform:uppercase; margin-bottom:24px; }
.rc-metrics{ display:grid; grid-template-columns: repeat(4,1fr); gap:14px; margin: 26px 0; }
.rc-metrics div{ background: var(--surface-2); border:1px solid var(--border); border-radius:10px; padding:16px 10px; text-align:center; }
.rc-metrics .rv{ font-family: var(--font-head); font-size:22px; font-weight:700; color: var(--teal); }
.rc-metrics .rl{ font-family: var(--font-mono); font-size:10px; color: var(--text-faint); margin-top:4px; }
.rc-list{ display:flex; flex-direction:column; gap:10px; margin: 24px 0; }
.rc-list a{ display:flex; justify-content:space-between; align-items:center; background: var(--surface-2); border:1px solid var(--border); border-radius:10px; padding:14px 18px; font-size:14px; transition: all .2s ease;}
.rc-list a:hover{ border-color: var(--accent); background: var(--surface-3); }

/* Side project mini-cards */
.mini-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:20px; }
.mini-card{ background: var(--surface); border:1px solid var(--border); border-radius: 12px; padding:26px; display:flex; flex-direction:column; gap:10px; }
.mini-card .mini-tag{ font-family: var(--font-mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.08em; color: var(--violet); background: var(--violet-soft); padding:4px 10px; border-radius: 20px; display:inline-block; width:fit-content; }
.mini-card h4{ font-size:17px; }
.mini-card p{ color: var(--text-dim); font-size:14px; }
.mini-card .mini-meta{ font-family: var(--font-mono); font-size:11.5px; color: var(--text-faint); margin-top:auto; padding-top:10px; border-top:1px dashed var(--border); }

/* Reveal on scroll */
.reveal{ opacity:0; transform: translateY(24px); transition: all .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in{ opacity:1; transform: translateY(0); }

/* ============ RESPONSIVE ============ */
@media (max-width: 980px){
  .hero-grid, .about-grid, .contact-grid, .edge-block, .cs-two-col{ grid-template-columns:1fr; }
  .metrics-grid, .cases-grid, .flow, .proof-grid, .vault-grid, .constraint-grid, .outcome-grid, .artifact-strip, .artifact-grid, .cs-meta-grid, .care-grid, .rc-metrics{ grid-template-columns: repeat(2,1fr); }
  .before-after{ grid-template-columns:1fr; }
  .mini-grid{ grid-template-columns: 1fr; }
  .teardown-grid{ grid-template-columns: 1fr; }
  .practice-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 760px){
  .nav-links{ position:fixed; top:64px; left:0; right:0; background: var(--bg); flex-direction:column; padding:24px 28px; gap:20px; border-bottom:1px solid var(--border); display:none; }
  .nav-links.open{ display:flex; }
  .nav-toggle{ display:flex; }
  .metrics-grid, .flow, .proof-grid, .vault-grid, .cases-grid, .constraint-grid, .outcome-grid, .artifact-strip, .artifact-grid, .cs-meta-grid, .care-grid, .rc-metrics, .practice-grid{ grid-template-columns: 1fr; }
  .metric-cell{ border-right:none; border-bottom:1px solid var(--border); }
  .phase{ grid-template-columns:1fr; }
  section{ padding:70px 0; }
  .recruiter-btn span.rb-text{ display:none; }
  .status-strip{ display:none; }
}

/* ============ PRINT (Recruiter Mode -> PDF export) ============ */
@media print{
  body{ background:#fff !important; color:#111 !important; }
  .status-strip, header.navbar, footer.site-footer, .boot-log, .nav-toggle{ display:none !important; }
  .boot-screen{ min-height:auto; padding:0; }
  .summary-card{
    background:#fff !important; border:1px solid #ccc !important; box-shadow:none !important;
    padding:24px !important; color:#111 !important;
  }
  .summary-card h1, .summary-card .role, .summary-card p, .rc-list a{ color:#111 !important; }
  .summary-card .role{ color:#2a6df0 !important; }
  .rc-metrics div{ background:#f4f5f7 !important; border:1px solid #ddd !important; }
  .rc-metrics .rv{ color:#0f8f72 !important; -webkit-text-fill-color:#0f8f72 !important; }
  .rc-list a{ background:#f9f9fa !important; border:1px solid #ddd !important; }
  .pill{ background:#f4f5f7 !important; color:#333 !important; border-color:#ccc !important; }
  a[href]::after{ content:""; }
}