/* ============================================================
   IAM — Identity and Access Management
   Dark theme | Glassmorphism | Responsive | Accessible
   ============================================================ */

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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #0f0f17;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --text-primary: #e8e8ed;
  --text-secondary: #9494a0;
  --text-tertiary: #7c7c8e;
  --accent: #6366f1;
  --accent-2: #06b6d4;
  --accent-3: #8b5cf6;
  --green: #10b981;
  --blue: #3b82f6;
  --purple: #a855f7;
  --red: #ef4444;
  --amber: #f59e0b;
  --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-2: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #6366f1 100%);
  --gradient-3: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

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

/* --- Grain overlay --- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.04;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23grain)'/%3E%3C/svg%3E") repeat;
  background-size: 256px 256px;
}

::selection { background: var(--accent); color: #fff; }

/* --- Focus visible --- */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --- Skip link --- */
.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10000;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: 0 0 var(--radius-sm) 0;
  transform: translateY(-120%);
  transition: transform 0.2s ease;
}
.skip-link:focus {
  transform: translateY(0);
}

/* --- CONTAINER --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- NAV --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}
.nav--scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 0;
}
.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.nav__logo-icon {
  font-size: 1.4rem;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav__links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}
.nav__link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.nav__link:hover,
.nav__link--active {
  color: var(--text-primary);
  background: var(--bg-card);
}
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}
.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- SECTION --- */
.section {
  padding: 7rem 0;
  position: relative;
}
.section--alt {
  background: var(--bg-secondary);
}
.section--alt::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg-primary);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 0);
}
.section--cta {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #0d0d1a 100%);
}
.section--cta::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg-secondary);
  clip-path: polygon(0 100%, 100% 0, 100% 100%, 0 100%);
}
.section__header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 4rem;
}
.section__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
  padding: 0.35rem 0.9rem;
  border-radius: 50px;
  margin-bottom: 1.25rem;
}
.section__title {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1rem;
}
.section__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --- SVG ILLUSTRATIONS --- */
.illustration {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto;
}
.illustration svg { max-width: 100%; height: auto; }

/* Hero illustration */
.hero-illustration {
  margin: 2rem auto 0;
  max-width: 420px;
  opacity: 0.7;
}
.hero-illustration .node { fill: var(--accent); }
.hero-illustration .node--dim { fill: var(--accent-3); opacity: 0.5; }
.hero-illustration .edge { stroke: var(--border); stroke-width: 1; }
.hero-illustration .edge--active { stroke: var(--accent); stroke-width: 1.5; }
.hero-illustration .shield { fill: none; stroke: var(--accent); stroke-width: 1.5; }

/* Radial diagram */
.radial-illustration {
  margin: 0 auto 2rem;
  max-width: 380px;
  opacity: 0.85;
}

/* Flow diagram */
.flow-illustration {
  margin: 2rem auto 0;
  max-width: 600px;
  opacity: 0.75;
}

/* --- HERO --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 6rem 1.5rem;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
  will-change: transform;
}
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
}
.hero__glow--1 {
  width: 600px;
  height: 600px;
  background: var(--accent);
  top: -200px;
  right: -150px;
  animation: glowFloat 8s ease-in-out infinite;
}
.hero__glow--2 {
  width: 400px;
  height: 400px;
  background: var(--accent-2);
  bottom: -100px;
  left: -100px;
  animation: glowFloat 6s ease-in-out infinite reverse;
}
@keyframes glowFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 20px) scale(1.1); }
}
.hero__particles {
  position: absolute;
  inset: 0;
}
.hero__particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 50%;
  animation: particleUp 4s ease-in-out infinite;
  opacity: 0;
}
@keyframes particleUp {
  0% { opacity: 0; transform: translateY(0) scale(0); }
  20% { opacity: 0.6; }
  80% { opacity: 0.2; }
  100% { opacity: 0; transform: translateY(-400px) scale(1.5); }
}
.hero__content {
  position: relative;
  text-align: center;
  max-width: 800px;
  z-index: 1;
}
.hero__overline {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-2);
  margin-bottom: 1.5rem;
}
.hero__title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}
.hero__title-accent {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}
.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-tertiary);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { top: -100%; }
  50% { top: 100%; }
  100% { top: 100%; }
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.btn--primary {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.45);
}
.btn--ghost {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.btn--sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

/* --- CARDS (3-column) --- */
.cards { display: grid; gap: 1.5rem; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(600px circle at var(--spot-x, 50%) var(--spot-y, 50%), rgba(99,102,241,0.08), transparent 40%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.card:hover::after { opacity: 1; }
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.card__icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.card__icon--blue { background: rgba(59, 130, 246, 0.12); color: var(--blue); }
.card__icon--green { background: rgba(16, 185, 129, 0.12); color: var(--green); }
.card__icon--purple { background: rgba(168, 85, 247, 0.12); color: var(--purple); }
.card__title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}
.card__text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 0.75rem;
}
.card__hint {
  color: var(--text-tertiary);
  font-size: 0.82rem;
  font-style: italic;
  line-height: 1.5;
}

/* --- COMPONENT GRID --- */
.component-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.comp-card {
  perspective: 1000px;
}
.comp-card__inner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}
.comp-card__inner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(400px circle at var(--spot-x, 50%) var(--spot-y, 50%), rgba(99,102,241,0.1), transparent 40%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.comp-card__inner:hover::after { opacity: 1; }
.comp-card__inner:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-3px);
}
.comp-card__inner--highlight {
  border-color: rgba(99, 102, 241, 0.3);
  background: rgba(99, 102, 241, 0.04);
}
.comp-card__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.05em;
}
.comp-card__inner h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0.6rem 0 0.4rem;
  letter-spacing: -0.01em;
}
.comp-card__inner p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- IDENTITY CARDS --- */
.identity-track { overflow: hidden; padding: 1rem 0; }
.identity-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}
.id-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  text-align: center;
  transition: var(--transition);
}
.id-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.id-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  border-radius: var(--radius);
  background: rgba(99, 102, 241, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.id-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.id-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* --- TIMELINE --- */
.timeline {
  position: relative;
  padding: 2rem 0;
}
.timeline__line {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--accent-3), var(--accent-2));
  opacity: 0.3;
  border-radius: 1px;
}
.timeline__steps {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  position: relative;
}
.timeline__step {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  position: relative;
}
.timeline__step:nth-child(odd) {
  flex-direction: row;
  padding-left: 3rem;
}
.timeline__step:nth-child(even) {
  flex-direction: row-reverse;
  padding-right: 3rem;
  text-align: right;
}
.timeline__dot {
  position: absolute;
  left: 50%;
  top: 0.5rem;
  transform: translateX(-50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
  z-index: 1;
}
.timeline__step:nth-child(even) .timeline__dot {
  left: 50%;
}
.timeline__content {
  width: calc(50% - 2rem);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition);
}
.timeline__content:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
}
.timeline__phase {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.timeline__content h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0.3rem 0 0.3rem;
}
.timeline__content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* --- TECH GRID --- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.tech-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.tech-card__icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  display: block;
}
.tech-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.tech-card__tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  background: rgba(6, 182, 212, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  margin-bottom: 0.75rem;
}
.tech-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* --- PRODUCTS --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
}
.product {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
}
.product:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.product__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 0.5rem;
}
.product__header h4 {
  font-size: 1.05rem;
  font-weight: 700;
}
.product__badge {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.55rem;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  white-space: nowrap;
}
.product__badge--accent {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent);
}
.product p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.55;
}
.product--featured {
  border-color: rgba(99, 102, 241, 0.25);
  background: rgba(99, 102, 241, 0.04);
}

/* --- CHALLENGES --- */
.challenges {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 800px;
  margin: 0 auto;
}
.challenge {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: var(--transition);
}
.challenge:hover {
  background: var(--bg-card-hover);
  border-color: rgba(239, 68, 68, 0.3);
  transform: translateX(6px);
}
.challenge__icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: rgba(239, 68, 68, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--red);
}
.challenge__body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}
.challenge__body p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- COMPLEX CARDS --- */
.complex-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}
.complex-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  overflow: hidden;
  transition: var(--transition);
}
.complex-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.complex-card__glow {
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.08;
  pointer-events: none;
}
.complex-card:first-child .complex-card__glow {
  background: var(--purple);
}
.complex-card:last-child .complex-card__glow {
  background: var(--accent-2);
}
.complex-card__content { position: relative; z-index: 1; }
.complex-card__icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius);
  background: rgba(99, 102, 241, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.complex-card__content h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}
.complex-card__content > p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}
.complex-card__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.complex-card__list li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding-left: 1.5rem;
  position: relative;
}
.complex-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* --- DOCUMENTATION --- */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.doc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
}
.doc-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-4px);
}
.doc-card__rfc {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-block;
  margin-bottom: 0.6rem;
  background: rgba(99, 102, 241, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}
.doc-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.doc-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.55;
}
.doc-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-2);
  margin-top: 0.75rem;
  transition: var(--transition);
}
.doc-card:hover .doc-card__link {
  gap: 0.6rem;
}

/* --- TOOLS PAGE --- */
.page-hero {
  padding: 10rem 1.5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(99,102,241,0.12) 0%, transparent 60%);
  pointer-events: none;
}
.page-hero__overline {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-2);
  margin-bottom: 1rem;
}
.page-hero__title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.page-hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}
.tool-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}
.tool-card__icon {
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.tool-card__icon--purple { background: rgba(168,85,247,0.1); color: var(--purple); }
.tool-card__icon--amber { background: rgba(245,158,11,0.1); color: var(--amber); }
.tool-card__icon--cyan { background: rgba(6,182,212,0.1); color: var(--accent-2); }
.tool-card__body { flex: 1; }
.tool-card__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.tool-card__header h3 {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.tool-card__badge {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent);
}
.tool-card__body > p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}
.tool-card__features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  list-style: none;
}
.tool-card__features li {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  background: rgba(255,255,255,0.03);
  padding: 0.3rem 0.7rem;
  border-radius: 50px;
  border: 1px solid var(--border);
}
.tool-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(99,102,241,0.08);
}
.tool-card__link:hover {
  background: rgba(99,102,241,0.15);
  gap: 0.7rem;
}

/* --- CTA --- */
.cta {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta h2 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cta p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.cta__principles {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta__principle {
  font-size: 0.9rem;
  color: var(--text-tertiary);
  padding: 0.6rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
}
.cta__principle strong { color: var(--text-primary); }

/* --- FOOTER --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}
.footer__text {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* --- ANIMATIONS --- */
.card--reveal,
.comp-card--reveal,
.id-card--reveal,
.tech-card--reveal,
.product--reveal,
.challenge--reveal,
.complex-card--reveal,
.timeline__step--reveal,
.doc-card--reveal,
.tool-card--reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.revealed {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* --- REDUCED MOTION --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .card--reveal,
  .comp-card--reveal,
  .id-card--reveal,
  .tech-card--reveal,
  .product--reveal,
  .challenge--reveal,
  .complex-card--reveal,
  .timeline__step--reveal,
  .doc-card--reveal,
  .tool-card--reveal {
    opacity: 1;
    transform: none;
  }
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
  .cards--3 { grid-template-columns: 1fr; }
  .component-grid { grid-template-columns: repeat(2, 1fr); }
  .identity-cards { grid-template-columns: repeat(3, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .complex-grid { grid-template-columns: 1fr; }
  .doc-grid { grid-template-columns: 1fr; }
  .timeline__line { left: 1rem; }
  .timeline__step,
  .timeline__step:nth-child(odd),
  .timeline__step:nth-child(even) {
    flex-direction: row;
    padding-left: 3rem;
    padding-right: 0;
    text-align: left;
  }
  .timeline__dot { left: 1rem; }
  .timeline__content { width: 100%; }
  .tool-card { flex-direction: column; align-items: center; text-align: center; }
  .tool-card__features { justify-content: center; }
}

@media (max-width: 768px) {
  .section { padding: 4rem 0; }
  .section--alt::before,
  .section--cta::before { height: 30px; }
  .section__title { font-size: 2rem; }
  .hero__title { font-size: 2.4rem; }
  .hero__actions { flex-direction: column; align-items: center; }
  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(20px);
    padding: 5rem 1.5rem 2rem;
    gap: 0.25rem;
    transition: var(--transition);
  }
  .nav__links--open { right: 0; }
  .nav__toggle { display: flex; z-index: 1001; }
  .component-grid { grid-template-columns: 1fr; }
  .identity-cards { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .cta__principles { flex-direction: column; align-items: center; }
  .hero-illustration { max-width: 280px; }
  .radial-illustration { max-width: 260px; }
  .flow-illustration { max-width: 100%; }
  .page-hero { padding: 8rem 1.5rem 3rem; }
}