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

:root {
  --bg-base:       #0a0c10;
  --bg-surface:    #10141c;
  --bg-card:       #141820;
  --bg-card-hover: #1a1f2e;
  --border:        #1e2535;
  --border-light:  #252d3d;

  --text-primary:   #e6eaf4;
  --text-secondary: #8891aa;
  --text-muted:     #505870;

  --accent:         #4f8ef7;
  --accent-glow:    rgba(79, 142, 247, 0.15);
  --accent-dark:    #1a3a6e;

  --warn:  #f5a623;
  --err:   #ff4d6a;
  --ok:    #3ddc84;

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
}

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

.container {
  width: 100%;
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.section__subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 3rem;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  padding: 0.6rem 1.25rem;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn--primary:hover {
  background: #3a7de0;
  border-color: #3a7de0;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn--outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn--outline:hover {
  background: var(--accent-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-light);
}

.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.btn--sm {
  font-size: 0.8rem;
  padding: 0.45rem 1rem;
}

.btn--lg {
  font-size: 1rem;
  padding: 0.85rem 2rem;
  width: 100%;
}

/* ============================================
   HEADER / NAV
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 12, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-block: 1rem;
}

.nav__logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.nav__logo-bracket {
  color: var(--text-muted);
}

.nav__tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-right: auto;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding-block: 5rem 4rem;
  border-bottom: 1px solid var(--border);
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
}

.hero__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--accent-dark);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  letter-spacing: 0.06em;
}

.hero__title {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--text-primary);
}

.hero__title--accent {
  color: var(--accent);
}

.hero__description {
  max-width: 640px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ============================================
   TERMINAL
   ============================================ */
.hero__terminal {
  width: 100%;
  max-width: 700px;
  background: #07090e;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-family: var(--font-mono);
  margin-top: 0.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: #0d1017;
  border-bottom: 1px solid var(--border);
}

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal__dot--red    { background: #ff5f57; }
.terminal__dot--yellow { background: #febc2e; }
.terminal__dot--green  { background: #28c840; }

.terminal__label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.terminal__body {
  padding: 1.25rem 1.5rem;
  font-size: 0.82rem;
  line-height: 1.9;
  overflow-x: auto;
}

.terminal__body code {
  font-family: inherit;
}

.term-dim  { color: var(--text-muted); }
.term-warn { color: var(--warn); }
.term-err  { color: var(--err); }
.term-ok   { color: var(--ok); }

/* ============================================
   PILLARS
   ============================================ */
.pillars {
  padding-block: 5rem;
  border-bottom: 1px solid var(--border);
}

.pillars__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.pillar-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.pillar-card__icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  display: block;
}

.pillar-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.pillar-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   PROCESS
   ============================================ */
.process {
  padding-block: 5rem;
  border-bottom: 1px solid var(--border);
}

.process__steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 640px;
  margin-inline: auto;
  position: relative;
}

.process__steps::before {
  content: '';
  position: absolute;
  left: 1.1rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--border), transparent);
}

.process__step {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding-block: 1.25rem;
  position: relative;
}

.process__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.55rem;
  min-width: 2.25rem;
  text-align: center;
  position: relative;
  z-index: 1;
  transition: border-color var(--transition), color var(--transition);
}

.process__step--active .process__num {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
}

.process__content {
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding-top: 0.35rem;
  line-height: 1.5;
}

.process__content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.process__step--active .process__content {
  color: var(--text-primary);
}

/* ============================================
   CTA
   ============================================ */
.cta {
  padding-block: 5rem;
}

.cta__inner {
  max-width: 680px;
}

.cta__title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.cta__desc {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1rem;
}

.cta__form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cta__textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  padding: 1rem 1.25rem;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.cta__textarea::placeholder {
  color: var(--text-muted);
}

.cta__textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.cta__note {
  font-size: 0.85rem;
  min-height: 1.2em;
}

.cta__note--success { color: var(--ok); }
.cta__note--error   { color: var(--err); }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  border-top: 1px solid var(--border);
  padding-block: 1.75rem;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer__brand {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer__copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 600px) {
  .nav__tagline { display: none; }

  .hero { padding-block: 3rem 2.5rem; }

  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; text-align: center; }

  .process__steps::before { display: none; }

  .footer__inner { flex-direction: column; align-items: flex-start; }
}