/* ===========================================================================
   Architecture section — ported from ArchitectureSection.tsx
   (Tailwind utilities translated to hand-written CSS; reuses design-system
   tokens + utilities: text-gradient, glow-green, grid-pattern, card-hover.)
   =========================================================================== */

.architecture {
  position: relative;
  padding-block: 8rem;            /* py-32 */
  overflow: hidden;
  background: var(--color-deep);
}
@media (min-width: 1024px) {
  .architecture { padding-block: 10rem; } /* lg:py-40 */
}

/* ── Background layers ── */
.architecture__bg {
  position: absolute;
  inset: 0;
  background: var(--color-deep);
  z-index: 0;
}
.architecture__grid {
  position: absolute;
  inset: 0;
  opacity: 0.2;                   /* opacity-20 */
  z-index: 0;
}

/* ── VaultMonolith pyramid overlay (layered behind content) ── */
.architecture__monolith {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.3;
  transform: translateY(-25%);
  z-index: 1;
}
.architecture__monolith-svg {
  width: 100%;
  max-width: 64rem;               /* max-w-5xl */
  height: auto;
}

/* ── Data stream illustration (right side, desktop only) ── */
.architecture__stream {
  position: absolute;
  right: 0;
  top: 5rem;                      /* top-20 */
  width: 350px;
  height: 500px;
  opacity: 0.12;
  pointer-events: none;
  display: none;
  z-index: 1;
}
@media (min-width: 1024px) {
  .architecture__stream { display: block; } /* hidden lg:block */
}
.architecture__stream-svg { width: 100%; height: 100%; }

/* ── Inner container ── */
.architecture__inner {
  position: relative;
  z-index: 10;
  max-width: 80rem;               /* max-w-7xl */
  margin-inline: auto;
  padding-inline: 1.5rem;         /* px-6 */
}
@media (min-width: 1024px) {
  .architecture__inner { padding-inline: 2rem; } /* lg:px-8 */
}

/* ── Header ── */
.architecture__header {
  text-align: center;
  max-width: 48rem;               /* max-w-3xl */
  margin-inline: auto;
  margin-bottom: 6rem;            /* mb-24 */
}
.architecture__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--color-accent);
  margin-bottom: 1.5rem;          /* mb-6 */
}
.architecture__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  font-weight: 700;
  font-size: 2.25rem;             /* text-4xl */
  line-height: 1.05;
  margin: 0 0 1.5rem;             /* mb-6 */
}
@media (min-width: 768px) {
  .architecture__title { font-size: 3rem; }     /* md:text-5xl */
}
@media (min-width: 1024px) {
  .architecture__title { font-size: 3.75rem; }  /* lg:text-6xl */
}
.architecture__title-accent {
  font-style: normal;             /* not-italic */
  font-family: var(--font-sans);
  font-weight: 700;
}
.architecture__lede {
  font-size: 1.125rem;            /* text-lg */
  color: var(--color-text-muted);
  margin: 0;
}

/* ── Flow stack (space-y-8) ── */
.architecture__flow > * + * { margin-top: 2rem; }

.architecture__row-center {
  display: flex;
  justify-content: center;
}

/* ── Depositors pill ── */
.architecture__depositors {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;                   /* gap-3 */
  padding: 0.75rem 1.5rem;        /* py-3 px-6 */
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px;             /* rounded-sm */
}
.architecture__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 9999px;
}
.architecture__dot--blue { background: var(--color-accent); }
.architecture__depositors-label {
  font-family: var(--font-mono);
  font-size: 0.875rem;            /* text-sm */
  color: var(--color-text-muted);
}
.architecture__depositors-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-dim);
}

/* ── Arrows ── */
.architecture__arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;                   /* gap-1 */
}
.architecture__arrow--purple { gap: 0; }
.architecture__arrow-line {
  width: 1px;
  height: 2rem;                   /* h-8 */
  background: color-mix(in srgb, var(--color-accent) 40%, transparent);
}
.architecture__arrow-line--tall {
  height: 2.5rem;                 /* h-10 */
  background: color-mix(in srgb, var(--color-accent) 40%, transparent);
}
.architecture__arrow-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--color-accent);
}
.architecture__arrow-head {
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 6px solid color-mix(in srgb, var(--color-accent) 40%, transparent);
}
.architecture__arrow-head--purple {
  border-top-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
}

/* ── Vault block ── */
.architecture__vault {
  border: 1px solid color-mix(in srgb, var(--color-accent) 30%, transparent);
  background: var(--color-surface);
  padding: 2rem;                  /* p-8 */
}
@media (min-width: 1024px) {
  .architecture__vault { padding: 2.5rem; }  /* lg:p-10 */
}
.architecture__vault-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;                   /* gap-3 */
  margin-bottom: 2rem;            /* mb-8 */
}
.architecture__square {
  width: 0.75rem;
  height: 0.75rem;
  background: var(--color-accent);
}
.architecture__vault-title {
  font-family: var(--font-mono);
  font-size: 1.125rem;            /* text-lg */
  font-weight: 700;
  letter-spacing: 0.025em;        /* tracking-wide */
  margin: 0;
}
.architecture__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-dim);
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
  padding: 0.125rem 0.5rem;       /* py-0.5 px-2 */
}

/* ── Buckets grid ── */
.architecture__buckets {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;                    /* gap-6 */
}
@media (min-width: 768px) {
  .architecture__buckets { grid-template-columns: repeat(3, 1fr); } /* md:grid-cols-3 */
}

.architecture__bucket {
  border: 1px solid;
  padding: 1.5rem;                /* p-6 */
}
.architecture__bucket--low {
  border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
  background: color-mix(in srgb, var(--color-accent) 5%, transparent);
}
.architecture__bucket--high {
  border-color: color-mix(in srgb, var(--color-warn) 40%, transparent);
  background: color-mix(in srgb, var(--color-warn) 5%, transparent);
}
.architecture__bucket--medium {
  border-color: color-mix(in srgb, #facc15 40%, transparent);  /* yellow-400 */
  background: color-mix(in srgb, #facc15 5%, transparent);
}
.architecture__bucket-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;            /* mb-4 */
}
.architecture__bucket-id {
  display: flex;
  align-items: center;
  gap: 0.75rem;                   /* gap-3 */
}
.architecture__bucket-letter {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.125rem;            /* text-lg */
  background: var(--color-surface-light);
  border: 1px solid var(--color-border);
}
.architecture__bucket-name {
  font-family: var(--font-mono);
  font-size: 0.75rem;             /* text-xs */
  text-transform: uppercase;
  letter-spacing: 0.05em;         /* tracking-wider */
  color: var(--color-text-muted);
}
.architecture__bucket-target {
  font-family: var(--font-mono);
  font-size: 1.25rem;             /* text-xl */
  font-weight: 700;
  color: var(--color-text);
}
.architecture__bucket-heading {
  font-weight: 600;               /* font-semibold */
  font-size: 1.125rem;            /* text-lg */
  margin: 0 0 0.5rem;             /* mb-2 */
}
.architecture__bucket-desc {
  font-size: 0.875rem;            /* text-sm */
  color: var(--color-text-muted);
  margin: 0 0 1rem;               /* mb-4 */
}
.architecture__bucket-foot {
  padding-top: 1rem;              /* pt-4 */
  border-top: 1px solid var(--color-border);
}
.architecture__bucket-risk-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.architecture__bucket-risk-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;          /* tracking-widest */
  color: var(--color-text-dim);
}
.architecture__bucket-risk {
  font-family: var(--font-mono);
  font-size: 0.75rem;             /* text-xs */
  font-weight: 700;
  text-transform: uppercase;
}
.architecture__bucket-risk--low { color: var(--color-accent); }
.architecture__bucket-risk--high { color: var(--color-warn); }
.architecture__bucket-risk--medium { color: #facc15; } /* yellow-400 */
.architecture__bucket-assets {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-dim);
  margin: 0.5rem 0 0;             /* mt-2 */
}

/* ── Fee bar ── */
.architecture__fee {
  margin-top: 2rem;               /* mt-8 */
  padding-top: 1.5rem;            /* pt-6 */
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.architecture__fee-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;             /* text-xs */
  color: var(--color-text-dim);
}
.architecture__fee-sweep {
  display: flex;
  align-items: center;
  gap: 0.5rem;                    /* gap-2 */
}
.architecture__fee-line {
  width: 2rem;                    /* w-8 */
  height: 1px;
  background: color-mix(in srgb, var(--color-accent) 40%, transparent);
}
.architecture__fee-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-accent);
}

/* ── Agent skill block ── */
.architecture__skill {
  border: 1px solid color-mix(in srgb, var(--color-accent) 30%, transparent);
  background: var(--color-surface);
  padding: 2rem;                  /* p-8 */
}
@media (min-width: 1024px) {
  .architecture__skill { padding: 2.5rem; }  /* lg:p-10 */
}
.architecture__skill-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;                   /* gap-3 */
  margin-bottom: 1.5rem;          /* mb-6 */
}
.architecture__skill-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;                      /* gap-8 */
}
@media (min-width: 768px) {
  .architecture__skill-grid { grid-template-columns: repeat(2, 1fr); } /* md:grid-cols-2 */
}
.architecture__skill-lede {
  font-size: 0.875rem;            /* text-sm */
  color: var(--color-text-muted);
  line-height: 1.625;             /* leading-relaxed */
  margin: 0 0 1.25rem;            /* mb-5 */
}

/* terminal card */
.architecture__terminal {
  background: var(--color-deep);
  border: 1px solid var(--color-border);
  padding: 1rem;                  /* p-4 */
  margin-bottom: 1.25rem;         /* mb-5 */
}
.architecture__terminal-head {
  display: flex;
  align-items: center;
  gap: 0.375rem;                  /* gap-1.5 */
  margin-bottom: 0.75rem;         /* mb-3 */
}
.architecture__terminal-dot {
  width: 0.625rem;                /* w-2.5 */
  height: 0.625rem;
  border-radius: 9999px;
}
.architecture__terminal-dot--warn { background: color-mix(in srgb, var(--color-warn) 60%, transparent); }
.architecture__terminal-dot--warm { background: color-mix(in srgb, var(--color-warm) 60%, transparent); }
.architecture__terminal-dot--accent { background: color-mix(in srgb, var(--color-accent) 60%, transparent); }
.architecture__terminal-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-dim);
  margin-left: 0.5rem;            /* ml-2 */
}
.architecture__terminal-code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  word-break: break-all;          /* break-all */
}

/* CTA buttons */
.architecture__skill-cta {
  display: flex;
  gap: 0.75rem;                   /* gap-3 */
}
.architecture__btn {
  flex: 1 1 0%;
  text-align: center;
  padding: 0.625rem 1rem;         /* py-2.5 px-4 */
  font-family: var(--font-mono);
  font-size: 0.75rem;             /* text-xs */
  text-transform: uppercase;
  letter-spacing: 0.1em;          /* tracking-widest */
  text-decoration: none;
}
.architecture__btn--primary {
  background: var(--color-accent);
  color: var(--color-void);
  font-weight: 500;               /* font-medium */
  transition: background-color 0.3s;
}
.architecture__btn--primary:hover { background: #ffffff; }
.architecture__btn--ghost {
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: border-color 0.3s, color 0.3s;
}
.architecture__btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* steps list (space-y-4) */
.architecture__steps > * + * { margin-top: 1rem; }
.architecture__step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;                      /* gap-4 */
}
.architecture__step-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}
.architecture__step-num {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  border: 1px solid color-mix(in srgb, var(--color-warn) 30%, transparent);
  color: var(--color-warn);
}
.architecture__step-line {
  width: 1px;
  height: 1rem;                   /* h-4 */
  background: color-mix(in srgb, var(--color-warn) 20%, transparent);
}
.architecture__step-text {
  font-size: 0.875rem;            /* text-sm */
  color: var(--color-text-muted);
  padding-top: 0.375rem;          /* pt-1.5 */
  margin: 0;
}

/* skill footer */
.architecture__skill-foot {
  margin-top: 1.5rem;             /* mt-6 */
  padding-top: 1rem;              /* pt-4 */
  border-top: 1px solid var(--color-border);
}
.architecture__skill-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;             /* text-xs */
  color: var(--color-text-dim);
  margin: 0;
}
.architecture__skill-warn {
  font-family: var(--font-mono);
  font-size: 10px;
  color: color-mix(in srgb, var(--color-warn) 70%, transparent);
  margin: 0.5rem 0 0;             /* mt-2 */
}