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

:root {
  --bg:        #05070c;
  --bg-2:      #0a0e16;
  --bg-3:      #0d1320;
  --card:      #0c111c;
  --card-h:    #111827;
  --line:      rgba(148,163,184,0.14);
  --line-h:    rgba(148,163,184,0.3);
  --ink:       #e2e8f0;
  --ink-2:     #94a3b8;
  --ink-3:     #64748b;
  --sky:       #38bdf8;
  --sky-soft:  rgba(56,189,248,0.14);
  --gold:      #f5c76a;
  --green:     #34d399;
  --red:       #f87171;
  --amber:     #fbbf24;
  --radius:    8px;
  --radius-sm: 4px;
  --radius-lg: 16px;
  --transition: 0.18s cubic-bezier(0.4,0,0.2,1);
  --shadow:    0 20px 60px rgba(0,0,0,0.5);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { font-family: 'Space Grotesk', sans-serif; line-height: 1.15; font-weight: 700; }

a { color: inherit; text-decoration: none; }

code {
  font-family: 'Courier New', monospace;
  background: var(--sky-soft);
  color: #7dd3fc;
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
}

::selection { background: var(--sky-soft); color: #bae6fd; }

/* ─── Layout ────────────────────────────────────────────────────────────────── */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
  border-top: 1px solid var(--line);
}

.section-alt { background: var(--bg-2); }

.text-center { text-align: center; }

/* ─── Typography ────────────────────────────────────────────────────────────── */
.sky-text {
  color: var(--sky);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 20px;
}

.section-label::after {
  content: '';
  flex: 1;
  max-width: 120px;
  height: 1px;
  background: var(--line);
}

.section-num {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--sky);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.text-center.section-label,
.section-label.text-center {
  justify-content: center;
}

.section-title {
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.section-sub {
  font-size: 1.02rem;
  color: var(--ink-2);
  max-width: 560px;
  margin: 0 auto 48px;
}

/* ─── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
  font-family: inherit;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--sky);
  color: #04121d;
}
.btn-primary:hover {
  background: #7dd3fc;
  box-shadow: 0 0 0 4px rgba(56,189,248,0.15);
}

.btn-ghost {
  background: transparent;
  color: var(--ink-2);
  border-color: var(--line);
}
.btn-ghost:hover {
  border-color: var(--line-h);
  color: var(--ink);
  background: var(--card-h);
}

.btn-outline {
  background: transparent;
  color: var(--sky);
  border-color: rgba(56,189,248,0.35);
}
.btn-outline:hover {
  background: var(--sky-soft);
  border-color: var(--sky);
}

.btn-sm { padding: 8px 14px; font-size: 0.82rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }

/* ─── Badges ────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-purple {
  background: var(--sky-soft);
  color: var(--sky);
  border: 1px solid rgba(56,189,248,0.3);
}

.badge-green {
  background: rgba(52,211,153,0.12);
  color: var(--green);
  border: 1px solid rgba(52,211,153,0.25);
}

/* ─── Scroll reveal ─────────────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1), transform 0.6s cubic-bezier(0.4,0,0.2,1);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

/* ─── NAV ───────────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(5,7,12,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
}

.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
}

.dot { color: var(--sky); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--ink-2);
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--ink); }

.nav-cta {
  background: var(--sky) !important;
  color: #04121d !important;
  padding: 8px 18px;
  border-radius: var(--radius);
  font-weight: 600 !important;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink-2);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  background: rgba(5,7,12,0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.nav-mobile a {
  padding: 14px 24px;
  color: var(--ink-2);
  font-size: 0.95rem;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  transition: color var(--transition), background var(--transition);
}

.nav-mobile a:hover { color: var(--ink); background: var(--card-h); }
.nav-mobile.open { display: flex; }

/* ─── HERO ──────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.13;
}

.orb-1 {
  width: 620px; height: 620px;
  background: #1d4ed8;
  top: -220px; left: -140px;
  animation: float 9s ease-in-out infinite;
}

.orb-2 {
  width: 480px; height: 480px;
  background: #0369a1;
  top: 120px; right: -180px;
  animation: float 11s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-26px); }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148,163,184,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 75% 75% at 50% 45%, black 25%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 75% 75% at 50% 45%, black 25%, transparent 100%);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 72px;
  align-items: center;
}

.hero-left { position: relative; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: rgba(13,19,32,0.6);
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-2);
  margin-bottom: 28px;
}

.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800;
  line-height: 1.06;
  margin-bottom: 24px;
  color: var(--ink);
  letter-spacing: -0.03em;
}

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.12rem);
  color: var(--ink-2);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.hero-proof {
  display: flex;
  align-items: center;
}

.proof-line {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--ink-3);
}

.proof-flag {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(245,199,106,0.35);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.proof-dot {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--ink-3);
}

.proof-text {
  letter-spacing: 0.04em;
}

/* Ledger card */
.hero-right { position: relative; }

.ledger-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px 28px 8px;
}

.ledger-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.ledger-title {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.ledger-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
}

.ledger-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse-dot 2s ease-in-out infinite;
}

.ledger-entry {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.ledger-key {
  font-size: 0.86rem;
  color: var(--ink-2);
}

.ledger-val {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.ledger-zero { color: var(--green); }

.ledger-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  font-size: 0.8rem;
  color: var(--ink-3);
}

.ledger-foot-icon { font-size: 0.9rem; }
.ledger-foot-icon, .about-card-icon { display: none; }

/* ─── ABOUT ─────────────────────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  margin-top: 40px;
}

.about-bio {
  color: var(--ink-2);
  font-size: 1.02rem;
  line-height: 1.75;
  margin-bottom: 18px;
}

.about-bio strong { color: var(--ink); font-weight: 600; }

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.tag {
  padding: 5px 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.8rem;
  color: var(--ink-2);
  font-weight: 500;
  transition: all var(--transition);
}

.tag:hover {
  border-color: var(--sky);
  color: var(--sky);
  background: var(--sky-soft);
}

.about-card-stack {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.about-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  transition: all var(--transition);
}

.about-card:hover {
  border-color: var(--line-h);
  background: var(--card-h);
  transform: translateY(-2px);
}

.about-card-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.about-card-label {
  font-size: 0.75rem;
  color: var(--ink-3);
  margin-top: 2px;
}

/* ─── PROJECTS ──────────────────────────────────────────────────────────────── */
.project-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 28px;
  transition: border-color var(--transition);
}

.project-card:hover {
  border-color: var(--line-h);
}

.project-header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 20px;
}

.project-icon-wrap {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  flex-shrink: 0;
  color: var(--sky);
}

.project-meta { flex: 1; }

.project-name-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.project-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
}

.project-subtitle {
  font-size: 0.78rem;
  color: var(--ink-3);
  font-weight: 500;
  border: 1px solid var(--line);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.project-tagline {
  font-size: 0.9rem;
  color: var(--ink-2);
}

.project-desc {
  color: var(--ink-2);
  font-size: 0.97rem;
  line-height: 1.7;
  margin-bottom: 28px;
}

/* Feature grid */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}

.feat-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.feat-item {
  display: flex;
  gap: 14px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  transition: all var(--transition);
}

.feat-item:hover {
  border-color: var(--line-h);
  background: var(--card-h);
}

.feat-icon {
  font-size: 1.3rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.feat-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 5px;
}

.feat-desc {
  font-size: 0.8rem;
  color: var(--ink-2);
  line-height: 1.55;
}

/* Tech tags */
.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tech-tag {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 10px;
  background: var(--sky-soft);
  color: var(--sky);
  border: 1px solid rgba(56,189,248,0.2);
  border-radius: var(--radius);
}

/* Stats row */
.project-stats-row {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.pstat {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 16px;
  border-right: 1px solid var(--line);
}

.pstat:last-child { border-right: none; }

.pstat-val {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.pstat-label {
  font-size: 0.72rem;
  color: var(--ink-3);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-top: 3px;
}

/* ─── CTA CARD ──────────────────────────────────────────────────────────────── */
.cta-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(56,189,248,0.25);
  background: linear-gradient(135deg, rgba(29,78,216,0.12) 0%, rgba(3,105,161,0.05) 100%);
}

.cta-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(56,189,248,0.1), transparent);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 64px 48px;
}

.cta-icon {
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sky-soft);
  border: 1px solid rgba(56,189,248,0.3);
  border-radius: var(--radius);
  color: var(--sky);
  margin-bottom: 24px;
}

.cta-title {
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.cta-desc {
  font-size: 1rem;
  color: var(--ink-2);
  max-width: 480px;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ─── VERIFY ────────────────────────────────────────────────────────────────── */
.verify-card {
  max-width: 620px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.verify-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.verify-avatar {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  background: var(--sky);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #04121d;
  flex-shrink: 0;
}

.verify-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}

.verify-handle {
  font-size: 0.82rem;
  color: var(--ink-3);
}

.verify-form { margin-bottom: 24px; }

.verify-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.verify-input-row {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.verify-input {
  flex: 1;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 11px 14px;
  color: var(--ink);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.verify-input:focus {
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(56,189,248,0.12);
}

.verify-input::placeholder { color: var(--ink-3); }

.verify-hint {
  font-size: 0.75rem;
  color: var(--ink-3);
  line-height: 1.4;
}

.verify-result {
  margin-top: 14px;
  padding: 0;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  min-height: 0;
  transition: all var(--transition);
}

.verify-result.success {
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.3);
  color: var(--green);
  padding: 12px 14px;
}

.verify-result.fail {
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.3);
  color: var(--red);
  padding: 12px 14px;
}

.verify-tips {
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.verify-tips-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

.verify-tips-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.verify-tips-list li {
  font-size: 0.82rem;
  color: var(--ink-2);
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}

.verify-tips-list li::before {
  content: '•';
  position: absolute;
  left: 2px;
  color: var(--sky);
}

/* ─── FOOTER ────────────────────────────────────────────────────────────────── */
.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
  padding: 48px 0 28px;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: 32px;
}

.footer-left p.footer-sub {
  font-size: 0.82rem;
  color: var(--ink-3);
  margin-top: 6px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links a {
  font-size: 0.87rem;
  color: var(--ink-3);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--ink); }

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  font-size: 0.8rem;
  color: var(--ink-3);
  text-align: center;
}

/* ─── NAV DROPDOWN ─────────────────────────────────────────────────────────── */
.nav-dropdown { position: relative; }

.nav-dropdown-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-2);
  padding: 8px 0;
  transition: color var(--transition);
}

.nav-dropdown-btn:hover,
.nav-dropdown.open .nav-dropdown-btn { color: var(--ink); }

.nav-chevron { transition: transform var(--transition); }
.nav-dropdown.open .nav-chevron { transform: rotate(180deg); }

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translate(-50%, 8px) scale(0.98);
  transform-origin: top center;
  min-width: 300px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.18s cubic-bezier(0.4,0,0.2,1), transform 0.18s cubic-bezier(0.4,0,0.2,1), visibility 0.18s;
  z-index: 110;
}

.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0) scale(1);
}

.tool-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.tool-link:hover { background: var(--card-h); }

.tool-link-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  background: var(--sky-soft);
  border: 1px solid rgba(56,189,248,0.2);
  border-radius: var(--radius);
}

.tool-link-meta { flex: 1; min-width: 0; }

.tool-link-name {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink);
}

.tool-link-desc {
  font-size: 0.74rem;
  color: var(--ink-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tool-link-arrow {
  color: var(--ink-3);
  transition: transform var(--transition), color var(--transition);
  flex-shrink: 0;
}

.tool-link:hover .tool-link-arrow {
  transform: translateX(3px);
  color: var(--sky);
}

/* Mobile tools block */
.nav-mobile-label {
  padding: 12px 24px 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.nav-mobile-tools { display: flex; flex-direction: column; }

.nav-mobile-tools a {
  padding: 10px 24px;
  color: var(--sky);
  font-size: 0.95rem;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  transition: color var(--transition), background var(--transition);
}

.nav-mobile-tools a:hover { color: var(--ink); background: var(--card-h); }

/* ─── TOOL PAGES ───────────────────────────────────────────────────────────── */
.home-only { display: block; }

body.tools-view .home-only { display: none; }
body.tools-view .tools-page { display: block; }

.tools-page {
  position: relative;
  min-height: 100vh;
  padding: 148px 0 96px;
  overflow: hidden;
}

.tools-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.tools-header {
  position: relative;
  z-index: 2;
  text-align: center;
  margin-bottom: 48px;
}

.tools-back {
  display: inline-block;
  margin-bottom: 28px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-3);
  transition: color var(--transition);
}

.tools-back:hover { color: var(--ink); }

.tools-title {
  font-size: clamp(2.2rem, 5vw, 3.25rem);
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.tools-sub {
  font-size: 1rem;
  color: var(--ink-2);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ─── TOTP CARD ────────────────────────────────────────────────────────────── */
.totp-card {
  position: relative;
  z-index: 2;
  max-width: 560px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow);
}

.totp-display {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 0 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.totp-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 12px;
}

.totp-code {
  font-family: 'Space Grotesk', monospace;
  font-size: clamp(3rem, 8vw, 4rem);
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  text-indent: 0.22em;
  line-height: 1;
}

.totp-progress {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 42px;
  height: 42px;
}

.totp-progress svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.totp-track,
.totp-fill {
  fill: none;
  stroke-width: 2.5;
}

.totp-track { stroke: var(--line); }

.totp-fill {
  stroke: var(--sky);
  stroke-linecap: round;
  transition: stroke 0.3s ease, stroke-dashoffset 1s linear;
}

.totp-fill.warning { stroke: var(--amber); }
.totp-fill.danger { stroke: var(--red); }

.totp-seconds {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.totp-copy {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-3);
  cursor: pointer;
  transition: all var(--transition);
  background: var(--bg-3);
}

.totp-copy:hover {
  color: var(--ink);
  border-color: var(--line-h);
  background: var(--card-h);
}

.totp-copy:focus-visible {
  outline: 2px solid var(--sky);
  outline-offset: 2px;
}

.totp-copy.copied { color: var(--green); border-color: rgba(52,211,153,0.4); }

.totp-input-row {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.totp-secret-input {
  font-family: 'Courier New', monospace;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.totp-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.totp-error {
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.3);
  color: var(--red);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 14px;
}

.verify-hint { margin-top: 12px; }

@media (max-width: 768px) {
  .totp-card { padding: 24px; }
  .totp-input-row { flex-direction: column; }
  .totp-code { font-size: 2.6rem; }
  .totp-progress { top: 12px; right: 12px; width: 38px; height: 38px; }
  .totp-copy { top: 8px; left: 8px; }
}

@media (max-width: 480px) {
  .tools-page { padding-top: 128px; }
}

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero { min-height: auto; padding-top: 140px; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-card-stack { grid-template-columns: 1fr; }

  .feat-grid { grid-template-columns: 1fr; }

  .project-header { flex-direction: column; }
  .project-header .btn { align-self: flex-start; }

  .project-stats-row { flex-wrap: wrap; }
  .pstat { flex: 1 1 45%; border-right: none; border-bottom: 1px solid var(--line); padding: 12px 0; }
  .pstat:nth-last-child(-n+2) { border-bottom: none; }

  .cta-inner { padding: 48px 24px; }

  .verify-input-row { flex-direction: column; }

  .footer-inner { flex-direction: column; gap: 24px; }
  .footer-links { flex-direction: column; gap: 12px; }

  .section { padding: 72px 0; }

  .project-card { padding: 24px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.4rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
}

/* ─── Reduced motion ───────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}