/* ─────────────────────────────────────────────
   SafeReadAI — main.css  (clean rewrite)
   ───────────────────────────────────────────── */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

/* ── TOKENS ─────────────────────────────────── */
:root {
  --color-bg:       #09090D;
  --color-surface:  #13131A;
  --color-border:   rgba(255,255,255,0.08);
  --color-brand:    #6366F1;
  --color-danger:   #EF4444;
  --color-safe:     #10B981;
  --color-text:     #F0F0F5;
  --color-text-2:   #A0A0B0;
  --color-text-3:   #606070;

  --font-sans: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'Space Mono', 'Courier New', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  2rem;
  --text-4xl:  2.75rem;
  --text-5xl:  3.75rem;

  --radius:    8px;
  --radius-lg: 16px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
strong { font-weight: 600; }
code { font-family: var(--font-mono); }

/* ── LAYOUT ─────────────────────────────────── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }

.hr-grid {
  border: none;
  border-top: 1px solid var(--color-border);
}

/* ── SECTION HEADER ─────────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-2);
  max-width: 600px;
  margin-bottom: 48px;
}

/* ── BUTTONS ────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: opacity .15s, background .15s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-brand);
  color: #fff;
}
.btn-primary:hover { opacity: .88; }

.btn-ghost {
  background: transparent;
  color: var(--color-text-2);
  border-color: var(--color-border);
}
.btn-ghost:hover { color: var(--color-text); border-color: rgba(255,255,255,.2); }

/* ── ACCENTS ────────────────────────────────── */
.accent         { color: var(--color-brand); }
.accent-danger  { color: var(--color-danger); }

/* ── NAV ────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  background: rgba(9,9,13,.85);
  backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: var(--text-lg);
}

.nav-logo-mark {
  background: var(--color-brand);
  color: #fff;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 4px 6px;
  border-radius: 4px;
  letter-spacing: .05em;
}

.nav-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 6px 14px;
  cursor: pointer;
  color: var(--color-text-2);
  transition: border-color .15s;
}
.nav-pill:hover { border-color: rgba(255,255,255,.2); }

.nav-pill-dot {
  width: 6px;
  height: 6px;
  background: var(--color-safe);
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 2s infinite;
}

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

.nav-right { display: flex; align-items: center; gap: 8px; }
.nav-right svg { width: 16px; height: 16px; }

/* ── HERO ───────────────────────────────────── */
.hero { padding: 96px 0 80px; }

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.text-container { max-width: 560px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: var(--text-xs);
  color: var(--color-text-2);
  margin-bottom: 24px;
}

.hero-headline {
  font-size: var(--text-5xl);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.hero-subhead {
  font-size: var(--text-lg);
  color: var(--color-text-2);
  margin-bottom: 32px;
}

.hero-install-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 28px;
}

.hero-install-cmd {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  margin-bottom: 10px;
}

.hero-install-prompt { color: var(--color-brand); font-weight: 700; }

.hero-install-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 4px 10px;
  color: var(--color-text-3);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.hero-install-copy:hover { color: var(--color-text); border-color: rgba(255,255,255,.2); }

.hero-install-hint {
  font-size: var(--text-xs);
  color: var(--color-text-3);
  margin-bottom: 12px;
}

.hero-install-optional {
  font-size: var(--text-xs);
  color: var(--color-text-3);
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
  line-height: 1.5;
}

.hero-cta-row { display: flex; gap: 12px; margin-bottom: 24px; }

.hero-stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--color-text-3);
}

.hero-stat-dot {
  width: 5px;
  height: 5px;
  background: var(--color-safe);
  border-radius: 50%;
}

/* ── ATTACK DEMO ────────────────────────────── */
.attack-demo {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-size: var(--text-sm);
}

.attack-demo-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255,255,255,.02);
}

.demo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.demo-dot-red    { background: #EF4444; }
.demo-dot-yellow { background: #F59E0B; }
.demo-dot-green  { background: #10B981; }

.demo-title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-3);
}

.attack-demo-body {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 28px 20px;
  flex-wrap: wrap;
}

.demo-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  flex: 1;
  min-width: 90px;
}

.demo-node-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.demo-node-icon.threat { border-color: var(--color-danger); }
.demo-node-icon.explosion { border-color: var(--color-danger); background: rgba(239,68,68,.1); }

.demo-node-label {
  font-size: var(--text-xs);
  color: var(--color-text-2);
  line-height: 1.4;
}

.demo-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.demo-arrow-line {
  display: flex;
  align-items: center;
  width: 40px;
}

.demo-arrow-track {
  flex: 1;
  height: 2px;
  background: var(--color-border);
}
.demo-arrow-track.active { background: var(--color-danger); }

.demo-arrow-head {
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 7px solid var(--color-border);
}

.demo-arrow-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--color-danger);
}

.demo-status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--color-border);
  background: rgba(239,68,68,.04);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-3);
}

.demo-status-dot {
  width: 6px;
  height: 6px;
  background: var(--color-danger);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

/* ── WITHOUT SECTION ────────────────────────── */
.flow-without { margin-bottom: 48px; overflow-x: auto; }

.flow-nodes {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 500px;
}

.flow-node { display: flex; flex-direction: column; align-items: center; gap: 6px; }

.flow-node-box {
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: var(--text-sm);
  white-space: nowrap;
}
.flow-node-box.danger  { border-color: var(--color-danger); color: var(--color-danger); }
.flow-node-box.explode { border-color: var(--color-danger); background: rgba(239,68,68,.1); }

.flow-label { font-size: var(--text-xs); color: var(--color-text-3); font-family: var(--font-mono); }

.flow-connector { display: flex; align-items: center; flex-shrink: 0; }
.flow-connector-arrow { font-size: var(--text-xl); color: var(--color-border); }
.flow-connector-arrow.danger { color: var(--color-danger); }

.threat-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.threat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  border-top: 2px solid var(--color-danger);
}

.threat-card-type {
  font-size: var(--text-xs);
  color: var(--color-danger);
  font-weight: 600;
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

.threat-card-content {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-text-2);
  margin-bottom: 12px;
  min-height: 80px;
}

.inject { color: var(--color-danger); font-weight: 600; }

.threat-card-result {
  font-size: var(--text-xs);
  color: var(--color-danger);
  background: rgba(239,68,68,.08);
  border-radius: var(--radius);
  padding: 6px 10px;
  font-weight: 600;
}

/* ── USE CASES ──────────────────────────────── */
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.usecase-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color .2s;
}
.usecase-card:hover { border-color: rgba(255,255,255,.15); }

.usecase-icon {
  width: 36px;
  height: 36px;
  color: var(--color-brand);
}
.usecase-icon svg { width: 100%; height: 100%; }

.usecase-title { font-weight: 600; font-size: var(--text-base); margin-bottom: 4px; }
.usecase-desc  { font-size: var(--text-sm); color: var(--color-text-2); line-height: 1.5; }

.usecase-threat {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-danger);
  background: rgba(239,68,68,.08);
  border-radius: var(--radius);
  padding: 4px 10px;
  align-self: flex-start;
}

.usecases-cta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.usecases-cta-cmd {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  flex: 1;
}

.usecases-cta-sub {
  font-size: var(--text-sm);
  color: var(--color-text-3);
}

/* ── PIPELINE ───────────────────────────────── */
.pipeline { max-width: 640px; }

.pipeline-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.pipeline-from {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-2);
  line-height: 1.4;
}

.pipeline-arrow-down {
  font-size: 1.5rem;
  color: var(--color-text-3);
  text-align: center;
}

.pipeline-layer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 8px;
}

.pipeline-layer-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-3);
  flex-shrink: 0;
  width: 24px;
}

.pipeline-layer-info { flex: 1; }

.pipeline-layer-name {
  font-weight: 600;
  font-size: var(--text-sm);
  margin-bottom: 2px;
}

.pipeline-layer-desc {
  font-size: var(--text-xs);
  color: var(--color-text-2);
}

.pipeline-layer-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: .05em;
  flex-shrink: 0;
}

.tag-block     { background: rgba(239,68,68,.15); color: var(--color-danger); }
.tag-rewrite   { background: rgba(99,102,241,.15); color: var(--color-brand); }
.tag-consensus { background: rgba(16,185,129,.15); color: var(--color-safe); }

.pipeline-output {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(16,185,129,.06);
  border: 1px solid rgba(16,185,129,.25);
  border-radius: var(--radius);
  margin-top: 8px;
}

.pipeline-output-icon { font-size: 1.5rem; }

.pipeline-output-title {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-safe);
  margin-bottom: 3px;
}

.pipeline-output-sub {
  font-size: var(--text-xs);
  color: var(--color-text-3);
}

/* ── INSTALL SECTION ────────────────────────── */
.install-hero {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.install-hero-cmd { display: flex; flex-direction: column; gap: 10px; }

.install-hero-cmd-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.install-hero-cmd-inner.secondary { padding: 10px 12px; font-size: var(--text-xs); }

.install-hero-prompt { color: var(--color-brand); font-weight: 700; }
.install-hero-tagline { font-size: var(--text-xs); color: var(--color-text-3); }

.install-hero-copy { margin-left: auto; }

.install-hero-copy-sm {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--color-text-3);
  cursor: pointer;
  padding: 2px;
}

.install-hero-optional { display: flex; flex-direction: column; gap: 10px; }

.install-hero-optional-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--color-text-3);
  font-weight: 600;
}

.install-hero-optional-desc {
  font-size: var(--text-xs);
  color: var(--color-text-3);
  line-height: 1.5;
}

.install-what-happens {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 32px;
}

.install-what-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-2);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 20px;
}

.install-what-steps { display: flex; flex-direction: column; gap: 16px; }

.install-what-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.install-what-num {
  width: 28px;
  height: 28px;
  background: var(--color-brand);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
  flex-shrink: 0;
}

.install-what-text {
  font-size: var(--text-sm);
  color: var(--color-text-2);
  line-height: 1.5;
  padding-top: 4px;
}

.install-cta-row { display: flex; gap: 12px; }

/* ── STATS ──────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 48px 0;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}

.stat-value {
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 8px;
  color: var(--color-brand);
}

.stat-label {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: 6px;
}

.stat-meta { font-size: var(--text-xs); color: var(--color-text-3); }

.grade { color: var(--color-safe); }

.badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: var(--text-xs);
  color: var(--color-text-2);
}

/* ── FOOTER ─────────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-3);
  max-width: 340px;
  margin-top: 12px;
  line-height: 1.5;
}

.footer-links {
  display: flex;
  gap: 24px;
  padding-top: 4px;
}

.footer-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm);
  color: var(--color-text-3);
  transition: color .15s;
}
.footer-link:hover { color: var(--color-text); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  font-size: var(--text-xs);
  color: var(--color-text-3);
}

.footer-mit {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── REVEAL ANIMATION ───────────────────────── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .5s, transform .5s; }
.reveal.visible { opacity: 1; transform: none; }

.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }
.reveal-delay-4 { transition-delay: .32s; }
.reveal-delay-5 { transition-delay: .40s; }

/* ── RESPONSIVE ─────────────────────────────── */
@media (max-width: 900px) {
  .section-title { font-size: var(--text-3xl); }
  .hero-headline { font-size: var(--text-4xl); }

  .hero .container { grid-template-columns: 1fr; }
  .attack-demo { display: none; }

  .threat-cards { grid-template-columns: 1fr; }
  .usecases-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .install-hero { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .hero-headline { font-size: var(--text-3xl); }
  .nav-pill { display: none; }
  .usecases-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}