/* ARCADIAN — infrastructure architecture diagram (scoped .arch) */
.arch {
  background:
    radial-gradient(120% 120% at 80% -10%, color-mix(in srgb, var(--gold) 9%, transparent), transparent 55%),
    var(--navy-900);
  border: 1px solid color-mix(in srgb,#fff 11%, transparent);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 42px);
  color: var(--on-navy);
  overflow: hidden;
}
.arch__head { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; flex-wrap: wrap; margin-bottom: 26px; }
.arch__heticket { }
.arch__klabel { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--gold-soft); }
.arch__title { font-family: var(--font-display); font-weight: 800; font-size: clamp(19px,2.4vw,26px); color: #fff; margin-top: 8px; letter-spacing: -.01em; }
.arch__legend { display: flex; gap: 16px; flex-wrap: wrap; }
.arch__leg { display: inline-flex; align-items: center; gap: 7px; font-size: 11.5px; color: var(--on-navy-2); font-family: var(--font-mono); }
.arch__leg i { width: 18px; height: 0; border-top-width: 2px; border-top-style: solid; display: inline-block; }

/* main flow: vertical stack of tiers, connected */
.arch__flow { display: grid; grid-template-columns: 1fr auto 1.05fr; gap: 0; align-items: stretch; }

/* left rail = request path tiers */
.arch__tiers { display: flex; flex-direction: column; gap: 0; }
.tier {
  position: relative;
  background: color-mix(in srgb,#fff 4%, transparent);
  border: 1px solid color-mix(in srgb,#fff 13%, transparent);
  border-radius: 12px;
  padding: 15px 17px;
  margin: 9px 0;
  transition: border-color .2s, background .2s;
}
.tier:hover { border-color: color-mix(in srgb,var(--gold) 55%, transparent); background: color-mix(in srgb,#fff 7%, transparent); }
.tier__top { display: flex; align-items: center; gap: 12px; }
.tier__ic { width: 34px; height: 34px; flex: none; border-radius: 9px; display: grid; place-items: center; background: color-mix(in srgb,var(--gold) 16%, transparent); color: var(--gold-soft); }
.tier__ic svg { width: 18px; height: 18px; }
.tier__name { font-family: var(--font-display); font-weight: 800; font-size: 15.5px; color: #fff; }
.tier__sub { font-size: 11.5px; color: var(--on-navy-2); margin-top: 1px; }
.tier__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 11px; padding-left: 46px; }
.tier__tag { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .02em; white-space: nowrap; color: var(--on-navy); background: color-mix(in srgb,#fff 7%, transparent); border: 1px solid color-mix(in srgb,#fff 12%, transparent); border-radius: 5px; padding: 3px 8px; }
.tier--pair { background: transparent; border: 0; padding: 0; margin: 9px 0; }
.tier__duo { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.tier__duo .tier { margin: 0; }
.tier__badge { position: absolute; top: -8px; right: 12px; font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; background: var(--gold); color: var(--navy); border-radius: 100px; padding: 3px 9px; font-weight: 700; }

/* connector arrows between tiers */
.arch__conn { display: flex; align-items: center; justify-content: center; height: 16px; }
.arch__conn svg { width: 16px; height: 16px; color: color-mix(in srgb,var(--gold) 70%, transparent); }

/* center spine */
.arch__spine { width: 56px; display: flex; flex-direction: column; align-items: center; justify-content: center; position: relative; }
.arch__spineline { position: absolute; top: 14px; bottom: 14px; width: 2px; background: repeating-linear-gradient(var(--gold-soft) 0 5px, transparent 5px 11px); opacity: .5; }

/* right = ops rail (monitoring + backup) */
.arch__ops { display: flex; flex-direction: column; gap: 12px; }
.opscard {
  background: color-mix(in srgb,#fff 4%, transparent);
  border: 1px solid color-mix(in srgb,#fff 13%, transparent);
  border-radius: 12px; padding: 16px 17px; flex: 1;
  display: flex; flex-direction: column;
}
.opscard__top > div { min-width: 0; }
.opscard__top { display: flex; align-items: center; gap: 11px; margin-bottom: 12px; }
.opscard__ic { width: 32px; height: 32px; flex: none; border-radius: 8px; display: grid; place-items: center; background: color-mix(in srgb,var(--gold) 15%, transparent); color: var(--gold-soft); }
.opscard__ic svg { width: 17px; height: 17px; }
.opscard__name { font-family: var(--font-display); font-weight: 800; font-size: 14.5px; line-height: 1.2; color: #fff; white-space: nowrap; }
.opscard__sub { font-size: 11px; line-height: 1.3; color: var(--on-navy-2); margin-top: 2px; }
.opsrow { display: flex; align-items: center; gap: 9px; padding: 8px 0; border-top: 1px solid color-mix(in srgb,#fff 9%, transparent); font-size: 12.5px; line-height: 1.25; color: var(--on-navy); }
.opsrow:first-of-type { border-top: 0; }
.opsdot { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.opsrow .mono { font-family: var(--font-mono); font-size: 10.5px; color: var(--on-navy-2); margin-left: auto; flex: none; white-space: nowrap; }
.opsrow__txt { min-width: 0; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

@media (max-width: 880px) {
  .arch__flow { grid-template-columns: 1fr; }
  .arch__spine { width: 100%; height: 30px; flex-direction: row; }
  .arch__spineline { top: auto; bottom: auto; left: 14px; right: 14px; height: 2px; width: auto; background: repeating-linear-gradient(90deg, var(--gold-soft) 0 5px, transparent 5px 11px); }
  .arch__ops { flex-direction: row; }
}
@media (max-width: 560px) {
  .tier__duo { grid-template-columns: 1fr; }
  .arch__ops { flex-direction: column; }
  .tier__tags { padding-left: 0; }
}