/* =====================================================================
   Juanma Escudier — Cloud & DevOps Engineer Portfolio
   styles.css — monochrome / Vercel-inspired / sharp corners
   Geist typeface · gradient reserved for focal points only
   ===================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Base palette — near-black, monochrome */
  --bg:        #0A0D12;
  --bg-2:      #10151D;
  --bg-3:      #0D1219;
  --border:    #212834;
  --border-2:  #181E27;
  --text:      #FFFFFF;
  --text-2:    #9BA6B7;
  --text-3:    #5E6A7B;

  /* Accents — used sparingly */
  --accent:    #8E9BFF;            /* soft periwinkle, minimal use */
  --success:   #2BD46A;
  --warning:   #E5B567;

  /* Focal gradient (blue -> violet -> pink) */
  --grad: linear-gradient(115deg, #4E9BFF 0%, #8B5CF6 52%, #EC4899 100%);
  --grad-soft: linear-gradient(115deg, rgba(78,155,255,0.16), rgba(139,92,246,0.12), rgba(236,72,153,0.14));

  /* Typography */
  --font-sans: "Geist", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;

  /* Spacing */
  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px; --sp-5: 24px;
  --sp-6: 32px; --sp-7: 48px; --sp-8: 64px; --sp-9: 96px;

  /* Layout */
  --maxw: 1160px;
  --nav-h: 64px;

  /* Effects */
  --speed: 0.18s;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg);
  color: var(--text-2);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--text); text-decoration: none; transition: color var(--speed) var(--ease), opacity var(--speed) var(--ease); }
a:hover { color: var(--text); opacity: 0.82; }

::selection { background: rgba(139, 92, 246, 0.28); color: var(--text); }

/* gradient text helper */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- Accessibility ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: #fff; color: #0A0D12; font-size: 13px; font-weight: 600;
  padding: 10px 16px; border: 1px solid #fff; transition: top var(--speed) var(--ease);
}
.skip-link:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--sp-5); }

.section { padding-block: var(--sp-9); border-top: 1px solid var(--border-2); position: relative; }
.section:first-of-type { border-top: none; }

/* Section eyebrow label — clean, uppercase, tracked */
.section-label {
  font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--text-3); margin-bottom: var(--sp-4);
  display: flex; align-items: center; gap: 10px;
}
.section-label::before {
  content: ""; width: 22px; height: 2px; background: var(--grad); display: inline-block;
}

.section-title {
  font-size: clamp(1.7rem, 3.4vw, 2.6rem); line-height: 1.08; letter-spacing: -0.03em;
  color: var(--text); font-weight: 600; margin-bottom: var(--sp-4);
}
.section-intro { max-width: 64ch; color: var(--text-2); font-size: 1.02rem; margin-bottom: var(--sp-7); }

/* ---------- Top navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 100; height: var(--nav-h);
  background: rgba(10, 13, 18, 0.72);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--border-2);
}
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4); }
.brand { display: flex; align-items: center; gap: var(--sp-3); font-weight: 600; color: var(--text); font-size: 0.95rem; letter-spacing: -0.02em; }
.brand-mark {
  width: 28px; height: 28px; border: 1px solid var(--border); display: grid; place-items: center;
  color: var(--text); background: var(--bg-2); flex: none;
}
.brand-mark svg { width: 15px; height: 15px; }
.brand .blink { color: var(--accent); animation: blink 1.2s step-end infinite; }

.nav-links { display: flex; align-items: center; gap: 2px; list-style: none; }
.nav-links a {
  font-size: 0.9rem; color: var(--text-2); padding: 8px 13px; position: relative;
  transition: color var(--speed) var(--ease);
}
.nav-links a:hover { color: var(--text); opacity: 1; }
.nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: -2px; height: 2px; background: var(--grad);
}

.nav-actions { display: flex; align-items: center; gap: var(--sp-3); }

/* Language toggle */
.lang-toggle { display: inline-flex; border: 1px solid var(--border); background: var(--bg-2); font-size: 0.78rem; }
.lang-toggle button {
  appearance: none; background: transparent; border: none; cursor: pointer;
  color: var(--text-3); padding: 7px 11px; font: inherit; font-weight: 500;
  transition: color var(--speed) var(--ease), background var(--speed) var(--ease);
}
.lang-toggle button[aria-pressed="true"] { color: #0A0D12; background: #fff; }
.lang-toggle button:hover[aria-pressed="false"] { color: var(--text); }

/* Mobile menu toggle */
.nav-burger { display: none; appearance: none; background: var(--bg-2); border: 1px solid var(--border); width: 42px; height: 42px; cursor: pointer; padding: 0; position: relative; }
.nav-burger span { position: absolute; top: 50%; left: 50%; width: 20px; height: 2px; background: var(--text); transform: translate(-50%, -50%); transition: background var(--speed) var(--ease); }
.nav-burger span::before, .nav-burger span::after { content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--text); transition: transform var(--speed) var(--ease); }
.nav-burger span::before { top: -6px; }
.nav-burger span::after { top: 6px; }
.nav-burger[aria-expanded="true"] span { background: transparent; }
.nav-burger[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-size: 0.9rem; font-weight: 500; padding: 11px 18px;
  border: 1px solid var(--border); background: var(--bg-2); color: var(--text); cursor: pointer;
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease), color var(--speed) var(--ease);
  white-space: nowrap;
}
.btn:hover { border-color: #38465c; background: #161C26; opacity: 1; }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn-primary { background: #fff; color: #0A0D12; border-color: #fff; font-weight: 600; }
.btn-primary:hover { background: #E7E9EE; border-color: #E7E9EE; color: #0A0D12; }
.btn-ghost { background: transparent; }

/* ---------- Hero ---------- */
.hero { position: relative; padding-block: clamp(var(--sp-8), 12vh, 132px) var(--sp-9); border-bottom: 1px solid var(--border-2); overflow: hidden; }
/* subtle masked grid — hero only */
.hero-grid-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  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: 48px 48px;
  -webkit-mask-image: radial-gradient(125% 95% at 50% -10%, #000 32%, transparent 76%);
  mask-image: radial-gradient(125% 95% at 50% -10%, #000 32%, transparent 76%);
}
/* soft gradient glow */
.hero::before { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(680px 420px at 22% 6%, rgba(139,92,246,0.12), transparent 70%), radial-gradient(560px 360px at 86% 0%, rgba(78,155,255,0.08), transparent 72%); }

/* crosshair marks at hero corners */
.hero-frame { position: absolute; inset: 22px; z-index: 0; pointer-events: none; }
.hero-frame span { position: absolute; width: 13px; height: 13px; }
.hero-frame span::before, .hero-frame span::after { content: ""; position: absolute; background: rgba(255,255,255,0.22); }
.hero-frame span::before { width: 13px; height: 1px; top: 50%; left: 0; transform: translateY(-50%); }
.hero-frame span::after { width: 1px; height: 13px; left: 50%; top: 0; transform: translateX(-50%); }
.hero-frame .tl { top: 0; left: 0; }
.hero-frame .tr { top: 0; right: 0; }
.hero-frame .bl { bottom: 0; left: 0; }
.hero-frame .br { bottom: 0; right: 0; }

.hero-inner { position: relative; z-index: 1; }
.hero-status { display: inline-flex; align-items: center; gap: var(--sp-2); font-size: 0.8rem; color: var(--text-2); border: 1px solid var(--border); background: var(--bg-2); padding: 6px 12px; margin-bottom: var(--sp-5); }
.hero-status .dot { width: 7px; height: 7px; background: var(--success); border-radius: 0; box-shadow: 0 0 0 0 rgba(43,212,106,0.6); animation: pulse 2.6s var(--ease) infinite; }
.hero-eyebrow { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.18em; color: var(--text-3); font-weight: 500; margin-bottom: var(--sp-4); }
.hero h1 { font-size: clamp(2.6rem, 7.4vw, 5rem); line-height: 1.0; letter-spacing: -0.045em; color: var(--text); font-weight: 600; margin-bottom: var(--sp-3); }
.hero-role { font-size: clamp(1.2rem, 3vw, 1.9rem); color: var(--text); font-weight: 500; letter-spacing: -0.02em; margin-bottom: var(--sp-5); }
.hero-role .accent { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.hero-lead { max-width: 60ch; font-size: 1.06rem; color: var(--text-2); margin-bottom: var(--sp-6); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--sp-3); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: var(--sp-7); align-items: center; }

/* Hero terminal card (keeps mono — it's a terminal) */
.terminal { border: 1px solid var(--border); background: var(--bg-3); font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.85; box-shadow: 0 30px 70px -36px rgba(0,0,0,0.85); position: relative; }
.terminal::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--grad); opacity: 0.85; }
.terminal-bar { display: flex; align-items: center; gap: var(--sp-2); padding: 10px 12px; border-bottom: 1px solid var(--border); background: var(--bg-2); }
.terminal-bar .sq { width: 9px; height: 9px; border: 1px solid var(--border); display: inline-block; }
.terminal-bar .title { margin-left: var(--sp-2); color: var(--text-3); font-size: 0.78rem; font-family: var(--font-mono); }
.terminal-body { padding: 16px 18px; color: var(--text-2); }
.terminal-body .ln { display: block; white-space: pre-wrap; }
.terminal-body .prompt { color: var(--accent); }
.terminal-body .ok { color: var(--success); }
.terminal-body .key { color: var(--text); }
.terminal-body .muted { color: var(--text-3); }
.terminal-body .cursor { color: var(--accent); animation: blink 1.2s step-end infinite; }

/* ---------- Generic card ---------- */
.card { border: 1px solid var(--border); background: var(--bg-2); padding: var(--sp-5); transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease); position: relative; }
.card:hover { border-color: #313d50; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--sp-7); align-items: start; }
.about-lead p { font-size: 1.06rem; color: var(--text-2); margin-bottom: var(--sp-4); }
.about-lead p strong { color: var(--text); font-weight: 600; }
.about-points { list-style: none; display: grid; gap: var(--sp-2); }
.about-points li { display: grid; grid-template-columns: auto 1fr; gap: var(--sp-3); align-items: start; border: 1px solid var(--border); background: var(--bg-3); padding: 12px 14px; font-size: 0.94rem; }
.about-points li .marker { color: var(--text-3); font-variant-numeric: tabular-nums; font-weight: 600; }
.about-points li b { color: var(--text); font-weight: 600; }

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--border); margin-top: var(--sp-6); }
.stat { padding: var(--sp-5); border-right: 1px solid var(--border); background: var(--bg-2); }
.stat:last-child { border-right: none; }
.stat .num { font-size: 2rem; font-weight: 600; color: var(--text); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.stat .num .accent { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
.stat .lbl { font-size: 0.82rem; color: var(--text-2); margin-top: 4px; }

/* ---------- Skills matrix ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(196px, 1fr)); gap: var(--sp-4); align-items: start; }
.skill-card { display: flex; flex-direction: column; gap: var(--sp-4); }
.skill-card .head { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); padding-bottom: var(--sp-3); }
.skill-card .head h3 { font-size: 1.05rem; color: var(--text); font-weight: 600; letter-spacing: -0.01em; }
.skill-card .head .idx { font-size: 0.8rem; color: var(--text-3); font-variant-numeric: tabular-nums; }
.skill-list { list-style: none; display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.skill-list li { background: var(--bg-3); padding: 9px 12px; font-size: 0.86rem; color: var(--text-2); display: flex; align-items: center; gap: var(--sp-2); transition: color var(--speed) var(--ease), background var(--speed) var(--ease); }
.skill-list li::before { content: ""; width: 5px; height: 5px; background: var(--text-3); flex: none; }
.skill-list li:hover { color: var(--text); background: var(--bg-2); }
.skill-list li:hover::before { background: var(--accent); }

/* ---------- Learning Lab ---------- */
.lab-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.lab-card { display: flex; flex-direction: column; gap: var(--sp-4); }
.lab-card .head { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.lab-card h3 { font-size: 1.1rem; color: var(--text); font-weight: 600; display: flex; align-items: center; gap: var(--sp-2); letter-spacing: -0.01em; }
.lab-card h3 .tag { font-family: var(--font-mono); color: var(--text-3); font-weight: 400; }
.lab-desc { font-size: 0.92rem; color: var(--text-2); }
.status-badge { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.04em; padding: 4px 9px; border: 1px solid var(--border); display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.status-badge .dot { width: 7px; height: 7px; }
.status-badge.active { color: var(--success); } .status-badge.active .dot { background: var(--success); }
.status-badge.progress { color: var(--warning); } .status-badge.progress .dot { background: var(--warning); }
.status-badge.planned { color: var(--text-3); } .status-badge.planned .dot { background: var(--text-3); }

.tag-row { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.tag { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-2); border: 1px solid var(--border); background: var(--bg-3); padding: 4px 9px; }
.progress-wrap { margin-top: auto; }
.progress-meta { display: flex; justify-content: space-between; font-size: 0.76rem; color: var(--text-3); margin-bottom: 6px; }
.progress-bar { height: 5px; background: var(--bg); border: 1px solid var(--border); }
.progress-fill { height: 100%; background: var(--grad); width: 0; transition: width 1s var(--ease); }
.progress-fill.success { background: var(--grad); }

/* ---------- Certifications ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); max-width: 760px; }
.cert-card { display: flex; flex-direction: column; gap: var(--sp-4); }
.cert-card .badge { width: 46px; height: 46px; border: 1px solid var(--border); background: var(--bg-3); display: grid; place-items: center; color: var(--text); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.02em; }
.cert-card.earned .badge { border-color: rgba(43,212,106,0.35); }
.cert-card h3 { font-size: 1.02rem; color: var(--text); font-weight: 600; letter-spacing: -0.01em; }
.cert-card .issuer { font-size: 0.84rem; color: var(--text-2); }
.cert-card .meta { margin-top: auto; display: flex; align-items: center; justify-content: space-between; font-size: 0.78rem; color: var(--text-3); border-top: 1px solid var(--border); padding-top: var(--sp-3); }
.cert-card.planned { border-style: dashed; }
.cert-card.planned h3, .cert-card.planned .badge { color: var(--text-3); }

/* ---------- Timeline ---------- */
.timeline { position: relative; display: grid; gap: 0; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 1px; background: var(--border); }
.tl-item { position: relative; padding: 0 0 var(--sp-6) var(--sp-7); }
.tl-item:last-child { padding-bottom: 0; }
.tl-item .node { position: absolute; left: 3px; top: 4px; width: 15px; height: 15px; border: 1px solid var(--border); background: var(--bg); }
.tl-item.current .node { border-color: transparent; background: var(--grad); box-shadow: 0 0 0 4px rgba(139,92,246,0.14); }
.tl-item .period { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-3); }
.tl-item h3 { font-size: 1.12rem; color: var(--text); font-weight: 600; margin: 4px 0 2px; letter-spacing: -0.01em; }
.tl-item .org { font-size: 0.9rem; color: var(--text-2); margin-bottom: var(--sp-2); }
.tl-item p { font-size: 0.92rem; color: var(--text-2); max-width: 62ch; }
.tl-item .role-tag { display: inline-block; font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3); border: 1px solid var(--border); padding: 2px 7px; margin-top: var(--sp-2); }

/* ---------- Projects ---------- */
.project-list { display: grid; gap: var(--sp-5); }
.project-card { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 0; padding: 0; }
.project-card .body { padding: var(--sp-6); display: flex; flex-direction: column; gap: var(--sp-4); }
.project-card .visual { border-left: 1px solid var(--border); background: var(--bg-3); display: grid; place-items: center; padding: var(--sp-5); position: relative; overflow: hidden; }
.project-card .visual::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px); background-size: 28px 28px; }
.project-meta { display: flex; align-items: center; gap: var(--sp-3); font-size: 0.78rem; color: var(--text-3); }
.project-meta .featured { font-weight: 600; letter-spacing: 0.04em; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; border: 1px solid var(--border); padding: 2px 8px; }
.project-card h3 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); color: var(--text); font-weight: 600; letter-spacing: -0.03em; }
.project-card .desc { font-size: 0.98rem; color: var(--text-2); }
.project-actions { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-2); }
.arch-mini { width: 100%; position: relative; z-index: 1; }

/* ---------- Architecture diagram (detail page) ---------- */
.arch-figure { border: 1px solid var(--border); background: var(--bg-3); padding: var(--sp-6); position: relative; }
.arch-figure::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(to right, rgba(255,255,255,0.028) 1px, transparent 1px), linear-gradient(to bottom, rgba(255,255,255,0.028) 1px, transparent 1px); background-size: 32px 32px; }
.arch-scroll { position: relative; z-index: 1; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.arch-scroll svg { display: block; width: 100%; max-width: 940px; min-width: 680px; margin-inline: auto; }
.arch-caption { font-size: 0.84rem; color: var(--text-3); margin-top: var(--sp-3); text-align: center; position: relative; z-index: 1; }
.arch-hint { display: none; }

/* ---------- Detail page ---------- */
.breadcrumb { font-size: 0.84rem; color: var(--text-3); margin-bottom: var(--sp-5); display: flex; gap: var(--sp-2); flex-wrap: wrap; }
.breadcrumb a { color: var(--text-2); }
.breadcrumb .sep { color: var(--border); }
.detail-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); color: var(--text); letter-spacing: -0.04em; font-weight: 600; line-height: 1.04; margin-bottom: var(--sp-3); }
.detail-hero .lead { font-size: 1.1rem; color: var(--text-2); max-width: 68ch; margin-bottom: var(--sp-5); }

.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--border); margin-block: var(--sp-6); }
.spec { padding: var(--sp-4); border-right: 1px solid var(--border); }
.spec:last-child { border-right: none; }
.spec .k { font-size: 0.72rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.08em; }
.spec .v { color: var(--text); font-weight: 600; margin-top: 4px; font-size: 0.95rem; }

.content-block { max-width: 76ch; }
.content-block h2 { font-size: 1.5rem; color: var(--text); font-weight: 600; margin: var(--sp-7) 0 var(--sp-3); letter-spacing: -0.02em; }
.content-block h3 { font-size: 1.1rem; color: var(--text); font-weight: 600; margin: var(--sp-5) 0 var(--sp-2); }
.content-block p { color: var(--text-2); margin-bottom: var(--sp-4); }
.content-block ul { list-style: none; display: grid; gap: var(--sp-2); margin-bottom: var(--sp-4); }
.content-block ul li { padding-left: var(--sp-5); position: relative; color: var(--text-2); }
.content-block ul li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 8px; height: 1px; background: var(--accent); }
.content-block strong { color: var(--text); font-weight: 600; }

.decision-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); margin-block: var(--sp-5); }
.decision { border: 1px solid var(--border); background: var(--bg-2); padding: var(--sp-5); }
.decision .q { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-3); margin-bottom: var(--sp-2); }
.decision h4 { color: var(--text); font-size: 1rem; margin-bottom: var(--sp-2); font-weight: 600; }
.decision p { font-size: 0.92rem; color: var(--text-2); margin: 0; }

.stack-table { width: 100%; border-collapse: collapse; border: 1px solid var(--border); margin-block: var(--sp-5); font-size: 0.92rem; }
.stack-table th, .stack-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border); }
.stack-table th { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-3); background: var(--bg-3); font-weight: 600; }
.stack-table td { color: var(--text-2); }
.stack-table td:first-child { color: var(--text); font-family: var(--font-mono); font-size: 0.86rem; white-space: nowrap; }
.stack-table tr:last-child td { border-bottom: none; }
.stack-table tbody tr:hover td { background: var(--bg-2); }

.code-block { border: 1px solid var(--border); background: var(--bg-3); font-family: var(--font-mono); font-size: 0.82rem; line-height: 1.8; color: var(--text-2); overflow-x: auto; margin-block: var(--sp-4); }
.code-block .bar { display: flex; align-items: center; gap: var(--sp-2); padding: 8px 12px; border-bottom: 1px solid var(--border); background: var(--bg-2); color: var(--text-3); font-size: 0.76rem; }
.code-block pre { padding: 14px 16px; margin: 0; white-space: pre; }
.code-block .c { color: var(--text-3); }
.code-block .k { color: var(--accent); }
.code-block .s { color: var(--success); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); margin-top: var(--sp-6); }
.contact-card { border: 1px solid var(--border); background: var(--bg-2); padding: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-2); transition: border-color var(--speed) var(--ease); }
.contact-card:hover { border-color: #313d50; opacity: 1; }
.contact-card .ic { width: 28px; height: 28px; color: var(--text-2); margin-bottom: var(--sp-2); }
.contact-card:hover .ic { color: var(--text); }
.contact-card .k { font-size: 0.78rem; color: var(--text-3); }
.contact-card .v { color: var(--text); font-weight: 600; word-break: break-word; }
.contact-details { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--border); margin-top: var(--sp-5); }
.detail-item { padding: var(--sp-5); border-right: 1px solid var(--border); display: flex; flex-direction: column; gap: 6px; }
.detail-item:last-child { border-right: none; }
.detail-item .dk { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); }
.detail-item .dv { color: var(--text); font-weight: 500; font-size: 0.95rem; }
.detail-item a.dv.link { color: var(--accent); }
@media (max-width: 720px) { .contact-details { grid-template-columns: 1fr; } .detail-item { border-right: none; border-bottom: 1px solid var(--border); } .detail-item:last-child { border-bottom: none; } }

/* ---------- CTA strip ---------- */
.cta { border: 1px solid var(--border); background: var(--bg-2); padding: var(--sp-7); display: flex; align-items: center; justify-content: space-between; gap: var(--sp-5); flex-wrap: wrap; position: relative; overflow: hidden; }
.cta::before { content: ""; position: absolute; inset: 0; background: radial-gradient(540px 220px at 88% 0%, rgba(139,92,246,0.12), transparent 70%); pointer-events: none; }
.cta::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--grad); }
.cta h2 { font-size: clamp(1.4rem, 3vw, 2rem); color: var(--text); font-weight: 600; letter-spacing: -0.03em; }
.cta p { color: var(--text-2); margin-top: 6px; }
.cta .actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; position: relative; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding-block: var(--sp-7); margin-top: var(--sp-2); }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--sp-5); flex-wrap: wrap; }
.footer .brand { margin-bottom: var(--sp-3); }
.footer-meta { font-size: 0.86rem; color: var(--text-3); line-height: 1.9; }
.footer-links { display: flex; gap: var(--sp-4); font-size: 0.86rem; flex-wrap: wrap; }
.footer-links a { color: var(--text-2); }
.footer-links a:hover { color: var(--text); }
.footer-build { font-size: 0.8rem; color: var(--text-3); margin-top: var(--sp-4); display: flex; align-items: center; gap: var(--sp-2); }
.footer-build .ok { color: var(--success); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: 0.06s; }
[data-reveal-delay="2"] { transition-delay: 0.12s; }
[data-reveal-delay="3"] { transition-delay: 0.18s; }
[data-reveal-delay="4"] { transition-delay: 0.24s; }

/* ---------- Keyframes ---------- */
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(43,212,106,0.5); } 70% { box-shadow: 0 0 0 7px rgba(43,212,106,0); } 100% { box-shadow: 0 0 0 0 rgba(43,212,106,0); } }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--sp-6); }
  .about-grid { grid-template-columns: 1fr; gap: var(--sp-6); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .spec:nth-child(2) { border-right: none; }
  .spec:nth-child(1), .spec:nth-child(2) { border-bottom: 1px solid var(--border); }
  .project-card { grid-template-columns: 1fr; }
  .project-card .visual { border-left: none; border-top: 1px solid var(--border); }
}
@media (max-width: 720px) {
  :root { --nav-h: 56px; }
  .nav-links { position: fixed; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--bg); border-bottom: 1px solid var(--border); box-shadow: 0 26px 44px -26px rgba(0,0,0,0.92); padding: var(--sp-2) var(--sp-4) var(--sp-4); transform: translateY(-12px); opacity: 0; pointer-events: none; transition: opacity var(--speed) var(--ease), transform var(--speed) var(--ease); }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { display: block; padding: 17px 6px; font-size: 1.1rem; font-weight: 500; color: var(--text-2); border-bottom: 1px solid var(--border-2); }
  .nav-links a.active { color: var(--text); }
  .nav-links li:last-child a { border-bottom: none; }
  .nav-links a.active::after { display: none; }
  .nav-burger { display: block; }
  .section { padding-block: var(--sp-8); }
  .lab-grid, .cert-grid, .contact-grid, .decision-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: none; }
  .spec-grid { grid-template-columns: 1fr; }
  .spec { border-right: none; border-bottom: 1px solid var(--border); }
  .spec:last-child { border-bottom: none; }
  .cta { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn, .project-actions .btn { flex: 1 1 auto; justify-content: center; }
}
@media (max-width: 420px) { .container { padding-inline: var(--sp-4); } .hero h1 { font-size: 2.4rem; } }

/* ---------- Architecture figure on mobile ---------- */
@media (max-width: 760px) {
  .arch-figure { padding: var(--sp-4); }
  .arch-scroll svg { min-width: 640px; }
  .arch-hint {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    margin-top: var(--sp-4); padding-top: var(--sp-3); border-top: 1px solid var(--border-2);
    font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.02em; color: var(--text-3);
    position: relative; z-index: 1;
  }
  .arch-hint .arrow {
    font-size: 1rem; line-height: 1; background: var(--grad);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
    animation: nudge 1.5s var(--ease) infinite;
  }
}
@keyframes nudge { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(5px); } }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Print ---------- */
@media print { .nav, .footer, .cta, .hero-frame, .hero-grid-bg { display: none; } body { background: #fff; color: #000; } }