/* ══════════════════════════════════════════════════════════════
   VOLT v2.1.0-hardened — Landing Page CSS
   Jonathan Evina (Sama) — RATISS Labs
   Zero external dependencies. Pure CSS custom properties + grid.
══════════════════════════════════════════════════════════════ */

/* ── RESET & BASE ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-0:     #050a0f;
  --bg-1:     #080e15;
  --bg-2:     #0c1520;
  --bg-3:     #111d2c;
  --bg-card:  #0d1a27;
  --bg-hover: #132034;

  --green:      #00e676;
  --green-dim:  #00b85733;
  --green-glow: #00e67640;
  --blue:       #00b4d8;
  --blue-dim:   #00b4d826;
  --blue-glow:  #00b4d840;
  --gold:       #ffd700;
  --gold-dim:   #ffd70022;
  --gold-glow:  #ffd70040;
  --purple:     #b57bee;
  --purple-dim: #b57bee22;
  --purple-glow:#b57bee40;
  --red:        #ff3b3b;
  --red-dim:    #ff3b3b22;
  --orange:     #ff9800;
  --orange-dim: #ff980022;
  --yellow:     #ffe082;
  --yellow-dim: #ffe08222;

  --text-0: #e8f4f8;
  --text-1: #a8c4d4;
  --text-2: #6a8fa4;
  --text-3: #3d5f74;

  --border:       #1a2f44;
  --border-bright: #1f3a54;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;

  --t-fast: 160ms ease;
  --t-med:  280ms ease;
  --t-slow: 480ms ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background: var(--bg-0);
  color: var(--text-0);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; }
code, pre { font-family: var(--font-mono); }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }
::selection { background: var(--green-glow); color: var(--green); }

/* ── MATRIX CANVAS ───────────────────────────────────── */
#matrix-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.07;
}

/* ── MODAL ───────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(5,10,15,.9);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-med);
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal-box {
  background: var(--bg-2);
  border: 1px solid var(--border-bright);
  border-radius: var(--r-xl);
  max-width: 760px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
  transform: translateY(20px);
  transition: transform var(--t-med);
}
.modal-overlay.open .modal-box {
  transform: translateY(0);
}
.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text-2);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: .85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.modal-close:hover { color: var(--text-0); border-color: var(--text-2); }

.modal-sector-header {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}
.modal-sector-header--bank   { border-bottom-color: rgba(0,230,118,.25); }
.modal-sector-header--telecom { border-bottom-color: rgba(0,180,216,.25); }
.modal-sector-header--defense { border-bottom-color: rgba(181,123,238,.25); }
.modal-sector-icon { font-size: 2.5rem; }
.modal-sector-tag {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: .5rem;
}
.modal-sector-header--telecom .modal-sector-tag { color: var(--blue); }
.modal-sector-header--defense .modal-sector-tag { color: var(--purple); }
.modal-sector-title {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
}
.modal-threat-block {
  background: rgba(255,59,59,.06);
  border: 1px solid rgba(255,59,59,.2);
  border-radius: var(--r-md);
  padding: 1.25rem;
  margin-bottom: 1.75rem;
}
.threat-label {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: .5rem;
}
.modal-threat-block p { font-size: .9rem; color: var(--text-1); line-height: 1.7; }

.modal-solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}
@media (max-width: 600px) { .modal-solution-grid { grid-template-columns: 1fr; } }
.modal-solution-item {
  display: flex;
  gap: .875rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1rem;
}
.msi-icon { font-size: 1.4rem; flex-shrink: 0; }
.msi-title { font-size: .875rem; font-weight: 700; color: var(--text-0); margin-bottom: .35rem; }
.msi-desc  { font-size: .8rem;   color: var(--text-1); line-height: 1.6; }
.modal-cta-row { display: flex; gap: .875rem; flex-wrap: wrap; }
.modal-btn-close { cursor: pointer; }

/* ── NAVBAR ──────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(5,10,15,.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--t-med);
}
#navbar.scrolled { box-shadow: 0 4px 32px rgba(0,0,0,.6), 0 0 16px var(--green-glow); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 2rem; height: 60px;
  display: flex; align-items: center; gap: 1.5rem;
}
.nav-logo {
  display: flex; align-items: center; gap: .5rem;
  font-weight: 700; font-size: 1.1rem; letter-spacing: .02em;
  transition: opacity var(--t-fast);
}
.nav-logo:hover { opacity: .8; }
.volt-badge { font-size: 1.2rem; filter: drop-shadow(0 0 6px var(--gold)); }
.logo-ver { font-size: .7rem; font-weight: 500; color: var(--green); margin-left: .25rem; vertical-align: super; }
.nav-links { list-style: none; display: flex; gap: 1.25rem; margin-left: auto; }
.nav-links a {
  font-size: .8rem; color: var(--text-1); letter-spacing: .04em;
  transition: color var(--t-fast); text-transform: uppercase; font-weight: 500;
}
.nav-links a:hover { color: var(--green); }
.nav-cta {
  background: var(--green); color: var(--bg-0);
  padding: .45rem 1.2rem; border-radius: var(--r-sm);
  font-size: .8rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  transition: background var(--t-fast), box-shadow var(--t-fast); white-space: nowrap;
}
.nav-cta:hover { background: #33ff90; box-shadow: 0 0 16px var(--green-glow); }

/* ── SECTIONS COMMON ─────────────────────────────────── */
section { position: relative; z-index: 1; }
.section-inner { max-width: 1200px; margin: 0 auto; padding: 7rem 2rem 5rem; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-eyebrow {
  font-size: .75rem; font-weight: 700; letter-spacing: .2em;
  text-transform: uppercase; color: var(--green); margin-bottom: .75rem;
}
.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: 800;
  letter-spacing: -.02em; line-height: 1.15; margin-bottom: 1rem;
}
.section-desc { font-size: 1.05rem; color: var(--text-1); max-width: 680px; margin: 0 auto; line-height: 1.7; }
.accent-green { color: var(--green); }
.accent-blue  { color: var(--blue); }
.accent-text  { color: var(--text-2); }

/* ── BUTTONS ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border: none; cursor: pointer; font-family: var(--font-sans); font-weight: 700;
  font-size: .875rem; letter-spacing: .06em; text-transform: uppercase;
  border-radius: var(--r-sm); padding: .75rem 1.75rem;
  transition: background var(--t-fast), box-shadow var(--t-fast), transform var(--t-fast), color var(--t-fast);
  white-space: nowrap; text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--green); color: var(--bg-0); }
.btn--primary:hover { background: #33ff90; box-shadow: 0 0 24px var(--green-glow); }
.btn--ghost {
  background: transparent; color: var(--text-0);
  border: 1px solid var(--border-bright);
}
.btn--ghost:hover { border-color: var(--green); color: var(--green); background: var(--green-dim); }
.btn--cta { background: linear-gradient(135deg, var(--blue), #0077b6); color: #fff; }
.btn--cta:hover { box-shadow: 0 0 24px var(--blue-glow); background: linear-gradient(135deg, #33d6f5, var(--blue)); }
.btn--wide { width: 100%; }
.btn--sm { font-size: .75rem; padding: .45rem 1.1rem; }

/* ── PILLS ───────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; font-size: .7rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; padding: .3rem .8rem;
  border-radius: 999px; border: 1px solid;
}
.pill--green { background: var(--green-dim); border-color: var(--green); color: var(--green); }
.pill--blue  { background: var(--blue-dim);  border-color: var(--blue);  color: var(--blue);  }
.pill--gold  { background: var(--gold-dim);  border-color: var(--gold);  color: var(--gold);  }

/* ════════════════════════════════════════════════════════
   SECTION 1 — HERO
════════════════════════════════════════════════════════ */
#hero {
  min-height: 100vh; display: flex; flex-direction: column; justify-content: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,230,118,.05) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(0,180,216,.04) 0%, transparent 50%),
    var(--bg-0);
  padding-top: 60px;
}
.hero-inner {
  max-width: 900px; margin: 0 auto; padding: 5rem 2rem 4rem;
  text-align: center; z-index: 1; position: relative;
}
.hero-badge-row { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; margin-bottom: 2rem; }
.hero-title { font-size: clamp(3.5rem, 10vw, 7rem); font-weight: 900; letter-spacing: -.04em; line-height: 1; margin-bottom: .5rem; }
.volt-glow {
  display: block;
  background: linear-gradient(135deg, var(--green) 0%, #39ff14 40%, var(--blue) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  filter: drop-shadow(0 0 40px var(--green-glow));
  animation: pulse-glow 4s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%, 100% { filter: drop-shadow(0 0 30px var(--green-glow)); }
  50%       { filter: drop-shadow(0 0 60px rgba(0,230,118,.5)); }
}
.hero-version { display: block; font-size: clamp(1.1rem, 3vw, 1.75rem); font-weight: 700; color: var(--text-1); letter-spacing: .04em; margin-top: .25rem; }
.hardened { color: var(--blue); font-style: italic; }
.hero-sub { font-size: clamp(.95rem, 2vw, 1.25rem); color: var(--text-2); letter-spacing: .08em; text-transform: uppercase; font-weight: 500; margin-top: 1.25rem; margin-bottom: .5rem; }
.hero-author { font-size: 1rem; color: var(--text-1); margin-bottom: 1.75rem; }
.hero-author strong { color: var(--green); }
.hero-desc { font-size: 1.05rem; color: var(--text-1); max-width: 700px; margin: 0 auto 2.5rem; line-height: 1.75; }
.hero-pillars { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: .5rem; margin-bottom: 2.5rem; }
.pillar {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 1.25rem 1.5rem; text-align: center; min-width: 130px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.pillar:hover { border-color: var(--green); box-shadow: 0 0 20px var(--green-dim); }
.pillar-icon { font-size: 1.5rem; margin-bottom: .5rem; }
.pillar-label { font-size: .875rem; font-weight: 700; color: var(--text-0); }
.pillar-sub   { font-size: .7rem; font-weight: 500; color: var(--green); letter-spacing: .05em; margin-top: .2rem; }
.pillar-sep   { font-size: 1.5rem; color: var(--text-3); padding: 0 .25rem; }
.hero-cta-row { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: 2.5rem; }
.hero-trust-bar {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: .75rem; font-size: .8rem; color: var(--text-2); letter-spacing: .04em;
  padding-top: 1.5rem; border-top: 1px solid var(--border);
}
.trust-item { display: flex; align-items: center; gap: .35rem; }
.trust-item svg { color: var(--green); flex-shrink: 0; }
.trust-sep { color: var(--text-3); }
.hero-scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  font-size: 1.25rem; color: var(--text-3);
  animation: bounce 2.5s ease-in-out infinite; z-index: 1;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ════════════════════════════════════════════════════════
   SECTION 2 — AUDIT
════════════════════════════════════════════════════════ */
#audit { background: var(--bg-1); border-top: 1px solid var(--border); }
.audit-grade-banner {
  display: flex; align-items: center; justify-content: space-between;
  background: linear-gradient(135deg, rgba(0,230,118,.07), rgba(0,180,216,.05));
  border: 1px solid var(--green); border-radius: var(--r-lg);
  padding: 1.5rem 2rem; margin-bottom: 2.5rem; gap: 1rem;
}
.grade-left { display: flex; align-items: center; gap: 1rem; }
.grade-icon { font-size: 2rem; }
.grade-label { font-size: .75rem; color: var(--text-2); text-transform: uppercase; letter-spacing: .1em; }
.grade-value { font-size: 1.2rem; font-weight: 800; color: var(--green); }
.grade-badge { background: var(--green); color: var(--bg-0); font-size: .75rem; font-weight: 900; letter-spacing: .15em; padding: .5rem 1.25rem; border-radius: var(--r-sm); white-space: nowrap; }
.fixes-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.25rem; margin-bottom: 2.5rem; }
.fix-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 1.75rem; transition: border-color var(--t-med), box-shadow var(--t-med); display: flex; flex-direction: column; }
.fix-card:hover { border-color: var(--border-bright); box-shadow: 0 4px 24px rgba(0,0,0,.4); }
.fix-card[data-severity="critical"]:hover { border-color: rgba(255,59,59,.4); box-shadow: 0 4px 24px rgba(255,59,59,.08); }
.fix-card[data-severity="major"]:hover   { border-color: rgba(255,152,0,.4); box-shadow: 0 4px 24px rgba(255,152,0,.08); }
.fix-card[data-severity="medium"]:hover  { border-color: rgba(255,224,130,.4); }
.fix-card[data-severity="minor"]:hover   { border-color: rgba(0,180,216,.4); }
.fix-header { display: flex; align-items: center; gap: .75rem; margin-bottom: 1rem; }
.fix-id { font-family: var(--font-mono); font-size: .8rem; font-weight: 700; color: var(--text-2); letter-spacing: .08em; }
.severity-badge { font-size: .65rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; padding: .2rem .6rem; border-radius: var(--r-sm); border: 1px solid; }
.severity--critical { background: var(--red-dim); border-color: var(--red); color: var(--red); }
.severity--major    { background: var(--orange-dim); border-color: var(--orange); color: var(--orange); }
.severity--medium   { background: var(--yellow-dim); border-color: var(--yellow); color: var(--yellow); }
.severity--minor    { background: var(--blue-dim); border-color: var(--blue); color: var(--blue); }
.fix-title { font-size: 1rem; font-weight: 700; color: var(--text-0); margin-bottom: .75rem; }
.fix-desc  { font-size: .875rem; color: var(--text-1); line-height: 1.65; margin-bottom: 1rem; flex: 1; }
.fix-desc code { color: var(--green); background: var(--green-dim); padding: .1rem .35rem; border-radius: 3px; font-size: .8rem; }
.fix-detail { display: none; margin-top: .75rem; padding-top: .75rem; border-top: 1px solid var(--border); }
.fix-detail.open { display: block; animation: fadeIn var(--t-med); }
.fix-impact { font-size: .825rem; color: var(--text-1); margin-top: .75rem; line-height: 1.6; }
.fix-impact code { color: var(--green); background: var(--green-dim); padding: .1rem .3rem; border-radius: 3px; font-size: .78rem; }
.fix-toggle {
  background: transparent; border: none; color: var(--text-2); font-size: .8rem;
  font-family: var(--font-sans); cursor: pointer; padding: .5rem 0 0;
  display: flex; align-items: center; gap: .35rem; transition: color var(--t-fast);
  margin-top: auto; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
}
.fix-toggle:hover { color: var(--green); }
.toggle-arrow { display: inline-block; transition: transform var(--t-med); font-size: 1rem; }
.fix-toggle[aria-expanded="true"] .toggle-arrow { transform: rotate(90deg); }
.code-block { background: var(--bg-0); border: 1px solid var(--border); border-radius: var(--r-md); overflow: hidden; }
.code-header {
  background: var(--bg-2); padding: .5rem .875rem; font-size: .7rem; color: var(--text-2);
  letter-spacing: .08em; text-transform: uppercase;
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--border);
}
.code-block pre { padding: 1rem; overflow-x: auto; font-size: .78rem; line-height: 1.7; color: var(--text-0); }
.code-block code { color: var(--green); }
.copy-code-btn {
  background: transparent; border: 1px solid var(--border); color: var(--text-2);
  font-size: .65rem; padding: .2rem .6rem; border-radius: var(--r-sm);
  cursor: pointer; font-family: var(--font-sans); letter-spacing: .04em;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.copy-code-btn:hover { color: var(--green); border-color: var(--green); }
.audit-summary {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center;
  padding: 2rem; background: var(--bg-2); border-radius: var(--r-lg); border: 1px solid var(--border);
}
.summary-stat { text-align: center; min-width: 80px; }
.stat-num { display: block; font-size: 2.25rem; font-weight: 900; font-family: var(--font-mono); line-height: 1; margin-bottom: .25rem; }
.stat--critical { color: var(--red); }
.stat--major    { color: var(--orange); }
.stat--medium   { color: var(--yellow); }
.stat--minor    { color: var(--blue); }
.stat--ok       { color: var(--green); }
.stat-label { font-size: .7rem; color: var(--text-2); text-transform: uppercase; letter-spacing: .1em; font-weight: 600; }

/* ════════════════════════════════════════════════════════
   SECTION 3 — SECTORS
════════════════════════════════════════════════════════ */
#sectors {
  background: var(--bg-0);
  border-top: 1px solid var(--border);
}
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
@media (max-width: 900px) { .sectors-grid { grid-template-columns: 1fr; } }

.sector-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: 2.5rem 2rem;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  transition: border-color var(--t-med), box-shadow var(--t-med), transform var(--t-med);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-family: var(--font-sans);
}
.sector-card:hover {
  transform: translateY(-4px);
}
.sector-card--bank:hover   { border-color: var(--green);  box-shadow: 0 8px 40px var(--green-glow); }
.sector-card--telecom:hover { border-color: var(--blue);   box-shadow: 0 8px 40px var(--blue-glow); }
.sector-card--defense:hover { border-color: var(--purple); box-shadow: 0 8px 40px var(--purple-glow); }

.sector-glow {
  position: absolute;
  top: -40px; right: -40px;
  width: 120px; height: 120px;
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--t-med);
  pointer-events: none;
}
.sector-card--bank   .sector-glow { background: radial-gradient(circle, var(--green-glow), transparent 70%); }
.sector-card--telecom .sector-glow { background: radial-gradient(circle, var(--blue-glow), transparent 70%); }
.sector-card--defense .sector-glow { background: radial-gradient(circle, var(--purple-glow), transparent 70%); }
.sector-card:hover .sector-glow { opacity: 1; }

.sector-icon { font-size: 2.25rem; }
.sector-tag {
  font-size: .68rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase;
}
.sector-card--bank   .sector-tag { color: var(--green); }
.sector-card--telecom .sector-tag { color: var(--blue); }
.sector-card--defense .sector-tag { color: var(--purple); }

.sector-title {
  font-size: 1.25rem; font-weight: 800; line-height: 1.25;
  color: var(--text-0); text-align: left;
}
.sector-teaser { font-size: .875rem; color: var(--text-1); line-height: 1.65; flex: 1; }
.sector-arrow {
  font-size: .8rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  transition: letter-spacing var(--t-fast);
}
.sector-card--bank   .sector-arrow { color: var(--green); }
.sector-card--telecom .sector-arrow { color: var(--blue); }
.sector-card--defense .sector-arrow { color: var(--purple); }
.sector-card:hover .sector-arrow { letter-spacing: .1em; }

/* ════════════════════════════════════════════════════════
   SECTION 4 — ANCHOR KEY VISUALIZER
════════════════════════════════════════════════════════ */
#anchor { background: var(--bg-1); border-top: 1px solid var(--border); }

.visualizer-layout {
  display: grid; grid-template-columns: 380px 1fr; gap: 2rem;
  margin-bottom: 3rem; align-items: start;
}
@media (max-width: 900px) { .visualizer-layout { grid-template-columns: 1fr; } }

.visualizer-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: 2rem;
  display: flex; flex-direction: column; gap: 1.25rem;
}
.viz-constants { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.const-item { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--r-md); padding: .75rem; }
.const-label { font-size: .68rem; color: var(--text-2); text-transform: uppercase; letter-spacing: .06em; display: block; margin-bottom: .25rem; }
.const-val   { font-family: var(--font-mono); font-size: .9rem; color: var(--gold); font-weight: 700; }
.viz-label { font-size: .78rem; color: var(--text-1); text-transform: uppercase; letter-spacing: .08em; font-weight: 600; display: block; margin-bottom: .5rem; }
.viz-input-wrap { position: relative; }
.viz-input {
  width: 100%; background: var(--bg-0); border: 1px solid var(--border-bright);
  border-radius: var(--r-md); padding: .75rem 2.75rem .75rem 1rem;
  color: var(--text-0); font-size: .95rem; font-family: var(--font-mono);
  outline: none; transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.viz-input:focus { border-color: var(--green); box-shadow: 0 0 0 3px var(--green-dim); }
.viz-eye {
  position: absolute; right: .75rem; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--text-2); cursor: pointer;
  padding: .25rem; transition: color var(--t-fast); display: flex; align-items: center;
}
.viz-eye:hover { color: var(--green); }
.viz-disclaimer { font-size: .7rem; color: var(--text-3); margin-top: .4rem; line-height: 1.5; }

/* Phase legend */
.viz-phase-legend { display: flex; flex-direction: column; gap: .4rem; }
.phase-item {
  display: flex; align-items: center; gap: .5rem;
  font-size: .72rem; color: var(--text-3); transition: color var(--t-fast);
}
.phase-item.active { color: var(--text-1); }
.phase-dot {
  width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0;
  opacity: .3; transition: opacity var(--t-fast), box-shadow var(--t-fast);
}
.phase-item.active .phase-dot { opacity: 1; }
.phase-dot--green  { background: var(--green); }
.phase-dot--gold   { background: var(--gold); }
.phase-dot--blue   { background: var(--blue); }
.phase-dot--purple { background: var(--purple); }
.phase-item.active .phase-dot--green  { box-shadow: 0 0 8px var(--green); }
.phase-item.active .phase-dot--gold   { box-shadow: 0 0 8px var(--gold); }
.phase-item.active .phase-dot--blue   { box-shadow: 0 0 8px var(--blue); }
.phase-item.active .phase-dot--purple { box-shadow: 0 0 8px var(--purple); }

/* Output panel */
.visualizer-output {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: 1.75rem;
  min-height: 380px; display: flex; align-items: center; justify-content: center;
}
.output-idle { text-align: center; color: var(--text-3); }
.idle-icon { font-size: 3rem; margin-bottom: 1rem; opacity: .5; }
.output-idle p { font-size: .9rem; }
.idle-sub { font-size: .78rem; margin-top: .35rem; }

/* Phase wrapper */
.viz-phase { width: 100%; animation: fadeIn .3s ease; }
.phase-label-top {
  display: flex; align-items: center; gap: .75rem;
  font-size: .78rem; color: var(--text-2); margin-bottom: 1.25rem;
  font-weight: 600; letter-spacing: .04em;
}
.phase-badge {
  font-size: .6rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  padding: .2rem .6rem; border-radius: var(--r-sm); flex-shrink: 0;
}
.phase-badge--green  { background: var(--green-dim); border: 1px solid var(--green); color: var(--green); }
.phase-badge--gold   { background: var(--gold-dim);  border: 1px solid var(--gold);  color: var(--gold); }
.phase-badge--blue   { background: var(--blue-dim);  border: 1px solid var(--blue);  color: var(--blue); }
.phase-badge--purple { background: var(--purple-dim); border: 1px solid var(--purple); color: var(--purple); }

/* Phase 1: byte canvas */
.phase-canvas { width: 100%; border-radius: var(--r-md); display: block; }
.phase-canvas--cascade { height: 160px; }
.phase-bytes-row {
  display: flex; flex-wrap: wrap; gap: 4px; margin-top: .75rem;
}
.byte-chip {
  background: var(--bg-2); border: 1px solid var(--green-dim);
  border-radius: 4px; padding: .25rem .4rem;
  font-family: var(--font-mono); font-size: .7rem; color: var(--green);
  animation: popIn .15s ease both;
}
@keyframes popIn {
  from { transform: scale(0.7); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

/* Phase 2: SMGS arena */
.smgs-arena {
  display: flex; align-items: center; justify-content: center;
  gap: 1rem; flex-wrap: wrap; padding: 1rem 0;
}
.smgs-passphrase-block {
  background: var(--bg-0); border: 1px solid var(--green);
  border-radius: var(--r-md); padding: .75rem 1rem;
  font-family: var(--font-mono); font-size: .85rem; color: var(--green);
  max-width: 160px; word-break: break-all; text-align: center;
  box-shadow: 0 0 12px var(--green-glow);
}
.smgs-operator {
  font-size: 2rem; font-weight: 900; color: var(--text-3);
}
.smgs-operator--eq { color: var(--gold); }
.smgs-const-block { display: flex; flex-direction: column; gap: .5rem; }
.smgs-const {
  background: var(--bg-0); border-radius: var(--r-md); padding: .6rem .875rem;
  font-family: var(--font-mono); font-size: .825rem; text-align: center;
  transition: box-shadow var(--t-med);
}
.smgs-const--df   { border: 1px solid var(--gold); color: var(--gold); }
.smgs-const--deff { border: 1px solid var(--orange); color: var(--orange); }
.smgs-const.pulse-gold   { box-shadow: 0 0 20px var(--gold-glow), 0 0 40px var(--gold-glow); }
.smgs-const.pulse-orange { box-shadow: 0 0 20px rgba(255,152,0,.4), 0 0 40px rgba(255,152,0,.3); }
.smgs-salt-block {
  text-align: center;
}
.smgs-salt-label { font-size: .68rem; color: var(--text-2); text-transform: uppercase; letter-spacing: .12em; margin-bottom: .4rem; }
.smgs-salt-val {
  font-family: var(--font-mono); font-size: .78rem; color: var(--blue);
  background: var(--bg-0); border: 1px solid var(--blue);
  border-radius: var(--r-md); padding: .5rem .75rem;
  box-shadow: 0 0 12px var(--blue-glow); word-break: break-all; max-width: 180px;
}

/* Phase 3: hash progress */
.hash-progress-bar {
  height: 4px; background: var(--border); border-radius: 2px;
  margin-top: 1rem; overflow: hidden;
}
.hash-progress-fill {
  height: 100%; background: linear-gradient(90deg, var(--blue), var(--green));
  border-radius: 2px; width: 0%; transition: width .1s linear;
}

/* Result */
.output-result { width: 100%; animation: fadeIn .4s ease; }
.result-label {
  display: flex; align-items: center; gap: .75rem;
  font-size: .78rem; color: var(--text-2); margin-bottom: 1rem;
}
.anchor-key-display {
  font-family: var(--font-mono); font-size: clamp(.9rem, 2.2vw, 1.15rem);
  font-weight: 700; color: var(--green); word-break: break-all;
  line-height: 1.9; padding: 1.25rem;
  background: var(--bg-0); border: 1px solid var(--green-dim);
  border-radius: var(--r-md); margin-bottom: 1rem; letter-spacing: .1em;
  box-shadow: 0 0 24px var(--green-dim), inset 0 0 12px rgba(0,0,0,.6);
  text-shadow: 0 0 10px var(--green-glow);
  animation: glowReveal .8s ease;
}
@keyframes glowReveal {
  from { box-shadow: 0 0 60px var(--green-glow), inset 0 0 20px rgba(0,230,118,.15); opacity: 0; }
  to   { box-shadow: 0 0 24px var(--green-dim), inset 0 0 12px rgba(0,0,0,.6); opacity: 1; }
}
.result-meta {
  display: flex; justify-content: space-between; font-size: .72rem;
  color: var(--text-3); margin-bottom: 1rem; flex-wrap: wrap; gap: .25rem;
}
.anchor-visual { display: flex; gap: 3px; flex-wrap: wrap; margin-bottom: 1rem; }
.anchor-byte {
  width: 22px; height: 22px; border-radius: 3px;
  transition: transform .1s ease;
  animation: byteReveal .3s ease both;
}
.anchor-byte:hover { transform: scale(1.3); }
@keyframes byteReveal {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}
.result-actions { display: flex; gap: .75rem; flex-wrap: wrap; }

/* Explainer */
.anchor-explainer {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: .5rem;
}
.explainer-step {
  display: flex; align-items: center; gap: .75rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 1rem 1.25rem; min-width: 140px;
}
.step-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--green-dim); border: 1px solid var(--green); color: var(--green);
  font-weight: 800; font-size: .8rem;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.step-title { font-size: .825rem; font-weight: 700; color: var(--text-0); }
.step-desc  { font-size: .7rem; color: var(--text-2); margin-top: .2rem; }
.explainer-arrow { font-size: 1.25rem; color: var(--text-3); }

/* ════════════════════════════════════════════════════════
   SECTION 5 — DOWNLOAD
════════════════════════════════════════════════════════ */
#download { background: var(--bg-0); border-top: 1px solid var(--border); }

.github-banner {
  display: flex; align-items: center; justify-content: space-between;
  background: linear-gradient(135deg, rgba(0,180,216,.07), rgba(0,230,118,.04));
  border: 1px solid var(--blue); border-radius: var(--r-lg);
  padding: 1.5rem 2rem; margin-bottom: 2.5rem; gap: 1.5rem; flex-wrap: wrap;
}
.github-banner-left { display: flex; align-items: center; gap: 1.25rem; }
.github-icon { color: var(--text-1); flex-shrink: 0; }
.github-label { font-size: .75rem; color: var(--text-2); text-transform: uppercase; letter-spacing: .1em; font-weight: 600; }
.github-url   { font-family: var(--font-mono); font-size: .95rem; color: var(--blue); font-weight: 700; margin-top: .2rem; }

.download-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem; margin-bottom: 2.5rem; }
.download-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r-xl);
  padding: 2rem; display: flex; flex-direction: column; gap: 1.25rem;
  transition: border-color var(--t-med), box-shadow var(--t-med);
}
.download-card:hover { border-color: var(--border-bright); box-shadow: 0 4px 24px rgba(0,0,0,.4); }
.download-card--featured { border-color: var(--blue); background: linear-gradient(135deg, var(--bg-card), rgba(0,180,216,.04)); }
.download-card--featured:hover { border-color: var(--blue); box-shadow: 0 4px 32px var(--blue-glow); }
.dl-icon { font-size: 2.5rem; }
.dl-info h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .5rem; }
.dl-info p  { font-size: .875rem; color: var(--text-1); line-height: 1.65; }
.dl-info code { color: var(--green); background: var(--green-dim); padding: .1rem .3rem; border-radius: 3px; font-size: .8rem; }
.dl-meta { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .75rem; }
.dl-tag { font-size: .65rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; padding: .2rem .6rem; border-radius: 999px; background: var(--bg-2); border: 1px solid var(--border); color: var(--text-2); }
.dl-btn { margin-top: auto; }
.license-block {
  display: flex; align-items: flex-start; gap: 1.25rem;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 1.75rem; margin-bottom: 2rem;
}
.license-icon { font-size: 2rem; flex-shrink: 0; }
.license-text strong { font-size: 1rem; color: var(--text-0); display: block; margin-bottom: .5rem; }
.license-text p { font-size: .875rem; color: var(--text-1); line-height: 1.65; }
.install-label { font-size: .75rem; color: var(--text-2); text-transform: uppercase; letter-spacing: .1em; font-weight: 600; margin-bottom: .5rem; }

/* ════════════════════════════════════════════════════════
   SECTION 6 — CONTACT
════════════════════════════════════════════════════════ */
#contact { background: var(--bg-1); border-top: 1px solid var(--border); }
.contact-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 3rem; align-items: start; }
@media (max-width: 768px) { .contact-layout { grid-template-columns: 1fr; } }

.contact-emails {
  display: flex; flex-direction: column; gap: .75rem;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 1.25rem; margin-bottom: 1.25rem;
}
.email-item { display: flex; flex-direction: column; gap: .2rem; }
.email-label { font-size: .68rem; color: var(--text-3); text-transform: uppercase; letter-spacing: .1em; font-weight: 600; }
.email-link { font-family: var(--font-mono); font-size: .9rem; color: var(--blue); font-weight: 600; transition: color var(--t-fast); }
.email-link:hover { color: var(--green); }

.contact-info { display: flex; flex-direction: column; gap: 1rem; }
.contact-item {
  display: flex; gap: 1rem; padding: 1.25rem;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r-lg);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.contact-item:hover { border-color: var(--blue); box-shadow: 0 2px 16px var(--blue-dim); }
.ci-icon { font-size: 1.5rem; flex-shrink: 0; line-height: 1; margin-top: .1rem; }
.ci-title { font-size: .9rem; font-weight: 700; color: var(--text-0); margin-bottom: .35rem; }
.ci-desc  { font-size: .825rem; color: var(--text-1); line-height: 1.6; }

.contact-form {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r-xl);
  padding: 2rem; display: flex; flex-direction: column; gap: 1.25rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 500px) { .form-row { grid-template-columns: 1fr; } }
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group label { font-size: .75rem; font-weight: 600; color: var(--text-2); text-transform: uppercase; letter-spacing: .07em; }
.form-group input, .form-group select, .form-group textarea {
  background: var(--bg-0); border: 1px solid var(--border-bright); border-radius: var(--r-md);
  padding: .75rem 1rem; color: var(--text-0); font-family: var(--font-sans); font-size: .925rem;
  outline: none; transition: border-color var(--t-fast), box-shadow var(--t-fast); width: 100%;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-3); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-dim); }
.form-group input.error, .form-group select.error, .form-group textarea.error { border-color: var(--red); }
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='%236a8fa4' d='M5.5 8L10 13 14.5 8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right .75rem center; background-size: 16px; cursor: pointer;
}
.form-group select option { background: var(--bg-2); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-error { font-size: .72rem; color: var(--red); min-height: 1rem; }
.form-group--check {}
.check-label {
  display: flex; align-items: flex-start; gap: .75rem; cursor: pointer;
  font-size: .825rem; color: var(--text-1); line-height: 1.5;
  text-transform: none; letter-spacing: 0; font-weight: 400;
}
.check-label input[type="checkbox"] { display: none; }
.check-custom {
  width: 18px; height: 18px; border: 2px solid var(--border-bright); border-radius: 4px;
  background: var(--bg-0); flex-shrink: 0; margin-top: .15rem;
  transition: background var(--t-fast), border-color var(--t-fast);
  display: flex; align-items: center; justify-content: center;
}
.check-label input[type="checkbox"]:checked + .check-custom { background: var(--blue); border-color: var(--blue); }
.check-label input[type="checkbox"]:checked + .check-custom::after { content: '✓'; color: #fff; font-size: .75rem; font-weight: 700; }
.form-success {
  display: flex; align-items: center; gap: 1rem;
  background: rgba(0,230,118,.08); border: 1px solid var(--green);
  border-radius: var(--r-md); padding: 1.25rem; animation: fadeIn var(--t-med);
}
.success-icon {
  width: 36px; height: 36px; border-radius: 50%; background: var(--green); color: var(--bg-0);
  font-size: 1.1rem; font-weight: 900; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.form-success strong { color: var(--text-0); }
.form-success p { font-size: .825rem; color: var(--text-1); margin-top: .2rem; }

/* ── FOOTER ──────────────────────────────────────────── */
#footer { background: var(--bg-0); border-top: 1px solid var(--border); position: relative; z-index: 1; }
.footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 3rem 2rem 2.5rem;
  text-align: center; display: flex; flex-direction: column; align-items: center; gap: 1.25rem;
}
.footer-brand { display: flex; align-items: center; gap: .5rem; font-size: 1.1rem; font-weight: 800; }
.footer-title { color: var(--text-0); letter-spacing: .02em; }
.footer-copy { font-size: .85rem; color: var(--text-2); line-height: 1.75; }
.footer-copy strong { color: var(--green); }
.footer-emails { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; justify-content: center; }
.footer-emails a { font-family: var(--font-mono); font-size: .85rem; color: var(--blue); transition: color var(--t-fast); }
.footer-emails a:hover { color: var(--green); }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: center; }
.footer-links a { font-size: .8rem; color: var(--text-2); text-transform: uppercase; letter-spacing: .08em; font-weight: 600; transition: color var(--t-fast); }
.footer-links a:hover { color: var(--green); }
.footer-disclaimer { font-size: .72rem; color: var(--text-3); max-width: 500px; }

/* ── ANIMATIONS ──────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero-pillars { gap: .4rem; }
  .pillar { min-width: 100px; padding: 1rem; }
}
@media (max-width: 600px) {
  .section-inner { padding: 5rem 1.25rem 3.5rem; }
  .audit-grade-banner { flex-direction: column; text-align: center; }
  .fixes-grid { grid-template-columns: 1fr; }
  .license-block { flex-direction: column; }
  .anchor-explainer { flex-direction: column; }
  .explainer-arrow { transform: rotate(90deg); }
  .github-banner { flex-direction: column; }
}