/* kette.css — die Kette als Seite und als kleiner Auftritt auf der Startseite. */

.kette-body {
  --kette-ok: var(--otongo-turquoise);
  --kette-break: var(--otongo-pappnase);
  --kette-paper: #ffffff;
  --kette-tint: #f2f1ea;
  --kette-line: var(--line);
  --kette-mono: var(--font-mono);
}

.kette-main {
  margin: 0 auto;
  max-width: 84rem;
  padding: clamp(2.6rem, 5vw, 4.6rem) 1.25rem clamp(3.5rem, 7vw, 6rem);
}

.kette-hero { max-width: 52rem; }
.kette-hero h1 {
  color: var(--heading);
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  letter-spacing: -.035em;
  line-height: 1.02;
  margin: 0 0 1.3rem;
}
.kette-hero h1 em { color: var(--kette-break); font-style: normal; }
.kette-hero .lede { max-width: 40rem; }
.kette-meta {
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  font: 400 .72rem/1.5 var(--kette-mono);
  gap: .4rem 1.4rem;
  letter-spacing: .05em;
  margin: 1.5rem 0 0;
  text-transform: uppercase;
}

.kette-work {
  align-items: start;
  display: grid;
  gap: clamp(1.2rem, 3vw, 2.2rem);
  grid-template-columns: minmax(0, 1.5fr) minmax(16rem, .72fr);
  margin-top: clamp(2.4rem, 5vw, 4rem);
}

.kette-log {
  background:
    linear-gradient(rgba(42, 157, 143, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 157, 143, .05) 1px, transparent 1px),
    var(--kette-paper);
  background-size: 2rem 2rem, 2rem 2rem, auto;
  border: 1px solid var(--kette-line);
  border-radius: 1.35rem;
  box-shadow: var(--shadow);
  padding: 1.25rem clamp(1rem, 2.4vw, 1.8rem) 1.4rem;
}

.kette-log-top,
.kette-seal-top {
  align-items: center;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
}
.kette-sr {
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}
.kette-label {
  color: var(--muted);
  font-family: var(--font-display);
  font-size: .7rem;
  letter-spacing: .14em;
  margin: 0;
  text-transform: uppercase;
}
.kette-live {
  color: #1d7a70;
  font: 700 .66rem/1.3 var(--kette-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.kette-hint {
  color: var(--muted);
  font-size: .8rem;
  margin: .6rem 0 0;
}
.kette-rows { list-style: none; margin: .6rem 0 0; padding: 0; }

.kette-row {
  align-items: start;
  display: grid;
  gap: .75rem;
  grid-template-columns: 1.5rem 2.2rem minmax(0, 1fr) 8.6rem;
  padding: .95rem 0;
  position: relative;
}
.kette-row::before {
  background: var(--kette-line);
  bottom: 0;
  content: "";
  left: .7rem;
  position: absolute;
  top: 0;
  width: 2px;
}
.kette-row:first-child::before { top: 1.45rem; }
.kette-row:last-child::before { bottom: calc(100% - 1.45rem); }
.kette-node {
  background: var(--kette-ok);
  border-radius: 50%;
  box-shadow: 0 0 0 .22rem rgba(42, 157, 143, .14);
  height: .62rem;
  margin-left: .39rem;
  margin-top: .48rem;
  position: relative;
  width: .62rem;
  z-index: 1;
}
.kette-seq {
  color: var(--muted);
  font: 400 .74rem/1.9 var(--kette-mono);
  letter-spacing: .04em;
}
.kette-body { min-width: 0; }
.kette-input {
  background: transparent;
  border: 0;
  border-bottom: 1px dashed rgba(38, 70, 83, .22);
  color: var(--text);
  cursor: text;
  display: block;
  font: inherit;
  line-height: 1.55;
  min-height: 3.1rem;
  padding: .1rem 0;
  resize: none;
  width: 100%;
}
.kette-input:hover { border-bottom-color: rgba(38, 70, 83, .4); }
.kette-input:focus { border-bottom-color: var(--kette-ok); outline: none; }
.kette-text { margin: 0; }
.kette-tag[hidden] { display: none; }
.kette-tag {
  color: var(--kette-break);
  display: inline-block;
  font: 700 .62rem/1.4 var(--kette-mono);
  letter-spacing: .1em;
  margin-top: .35rem;
  text-transform: uppercase;
}
.kette-hash {
  color: var(--muted);
  font: 400 .68rem/1.8 var(--kette-mono);
  overflow: hidden;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kette-row.is-changed .kette-input { border-bottom-color: var(--kette-break); }
.kette-row.is-changed .kette-node,
.kette-row.is-downstream .kette-node {
  background: var(--kette-break);
  box-shadow: 0 0 0 .22rem rgba(211, 47, 47, .14);
}
.kette-row.is-downstream .kette-node { opacity: .62; }
.kette-row.is-changed .kette-hash { color: var(--kette-break); }
.kette-row.is-changed::before,
.kette-row.is-downstream::before {
  background: repeating-linear-gradient(to bottom, var(--kette-break) 0 4px, transparent 4px 8px);
}
.kette-row.is-fresh { animation: kette-fresh .7s ease-out; }

@keyframes kette-fresh {
  0% { background: rgba(211, 47, 47, .10); }
  100% { background: transparent; }
}

.kette-side { min-width: 0; }
.kette-seal-card {
  background: var(--kette-paper);
  border: 1px solid var(--kette-line);
  border-radius: 1.35rem;
  box-shadow: var(--shadow);
  padding: 1.4rem;
  position: sticky;
  top: 5.5rem;
}
.kette-chip {
  border: 1.5px solid var(--kette-ok);
  border-radius: 999px;
  color: #1d7a70;
  font: 700 .62rem/1.2 var(--kette-mono);
  letter-spacing: .12em;
  padding: .25rem .55rem;
  text-transform: uppercase;
}
.kette-chip.is-broken { border-color: var(--kette-break); color: var(--kette-break); }

.kette-seal {
  align-items: center;
  aspect-ratio: 1;
  background: radial-gradient(circle at 35% 28%, rgba(42, 157, 143, .16), transparent 58%), var(--kette-tint);
  border: 2px solid var(--kette-ok);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  margin: 1.4rem auto;
  max-width: 10.5rem;
  position: relative;
  transition: border-color .3s ease, transform .3s ease;
  width: 100%;
}
.kette-seal::after {
  background: var(--kette-break);
  content: "";
  height: 2px;
  left: -10%;
  opacity: 0;
  position: absolute;
  top: 50%;
  transform: rotate(-26deg);
  transition: opacity .3s ease;
  width: 120%;
}
.kette-seal.is-broken {
  border-color: var(--kette-break);
  border-style: dashed;
  transform: rotate(-2deg);
}
.kette-seal.is-broken::after { opacity: .9; }
.kette-seal-short {
  color: #145f57;
  font: 700 .92rem/1.3 var(--kette-mono);
  letter-spacing: .06em;
}
.kette-seal.is-broken .kette-seal-short { color: var(--kette-break); }

.kette-facts {
  border-top: 1px solid var(--kette-line);
  display: grid;
  gap: .55rem;
  margin: 0 0 1rem;
  padding-top: .9rem;
}
.kette-facts div {
  display: grid;
  gap: .6rem;
  grid-template-columns: 3.2rem minmax(0, 1fr);
}
.kette-facts dt {
  color: var(--muted);
  font: 400 .62rem/1.5 var(--kette-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.kette-facts dd { margin: 0; min-width: 0; }
.kette-head {
  color: var(--heading);
  display: block;
  font: 400 .64rem/1.5 var(--kette-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kette-status {
  color: var(--muted);
  font-size: .86rem;
  line-height: 1.55;
  margin: 0 0 1rem;
  min-height: 3.9rem;
}

.kette-compare[hidden] { display: none; }
.kette-compare {
  border-left: 2px solid var(--kette-line);
  display: grid;
  gap: .45rem;
  margin: 0 0 1rem;
  padding-left: .8rem;
}
.kette-compare-row {
  display: grid;
  gap: .5rem;
  grid-template-columns: 3.4rem minmax(0, 1fr);
}
.kette-compare-row span {
  color: var(--muted);
  font: 400 .6rem/1.6 var(--kette-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.kette-compare-row code {
  color: var(--text);
  font: 400 .64rem/1.6 var(--kette-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kette-actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.kette-button {
  background: var(--kette-paper);
  border: 1.5px solid var(--line-strong);
  border-radius: 999px;
  color: var(--heading);
  cursor: pointer;
  font: 700 .74rem/1.2 var(--font-body);
  letter-spacing: .01em;
  padding: .55rem .8rem;
  transition: border-color .18s ease, background .18s ease, color .18s ease;
}
.kette-button:hover,
.kette-button:focus-visible {
  border-color: var(--kette-ok);
  color: #145f57;
  outline: none;
}
.kette-button-primary {
  background: var(--otongo-petrol);
  border-color: var(--otongo-petrol);
  color: #fff;
}
.kette-button-primary:hover,
.kette-button:focus-visible { color: #fff; }
.kette-button-primary:hover,
.kette-button-primary:focus-visible { background: #1b3641; border-color: #1b3641; color: #fff; }
.kette-button.is-tamper { background: var(--kette-paper); border-color: rgba(211, 47, 47, .5); color: var(--kette-break); }
.kette-button.is-tamper:hover { background: rgba(211, 47, 47, .07); border-color: var(--kette-break); color: var(--kette-break); }
.kette-button.is-reseal { border-color: rgba(42, 157, 143, .55); color: #145f57; }
.kette-button.is-reseal:hover { background: rgba(42, 157, 143, .08); border-color: var(--kette-ok); color: #145f57; }
.kette-button-quiet { color: var(--muted); border-color: var(--line); }
.kette-button:disabled { opacity: .45; cursor: default; }

.kette-archive {
  border-top: 1px solid var(--kette-line);
  margin-top: 1rem;
  padding-top: .9rem;
}
.kette-archive-list {
  display: grid;
  gap: .4rem;
  list-style: none;
  margin: .6rem 0 0;
  padding: 0;
}
.kette-archive-list li {
  align-items: baseline;
  display: flex;
  gap: .6rem;
  justify-content: space-between;
}
.kette-archive-size {
  color: var(--muted);
  font: 400 .62rem/1.5 var(--kette-mono);
}
.kette-archive-list code {
  background: var(--kette-tint);
  color: var(--heading);
  font: 400 .62rem/1.5 var(--kette-mono);
}

.kette-open {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .02em;
  margin-top: 1rem;
}

.kette-explain {
  border-top: 2px solid var(--heading);
  display: grid;
  gap: 1.6rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: clamp(3rem, 6vw, 5rem);
  padding-top: 1.8rem;
}
.kette-explain article { max-width: 22rem; }
.kette-explain h2 { font-size: 1.12rem; letter-spacing: -.01em; margin: .45rem 0 .5rem; }
.kette-explain p { color: var(--muted); font-size: .93rem; margin: 0; }
.kette-explain .kette-num {
  color: var(--kette-break);
  font-family: var(--font-display);
  font-size: .72rem;
  letter-spacing: .14em;
}

.kette-note {
  background: rgba(211, 47, 47, .04);
  border: 1px solid rgba(211, 47, 47, .2);
  border-left: 4px solid var(--kette-break);
  border-radius: .6rem;
  color: var(--muted);
  margin-top: 2.4rem;
  max-width: 54rem;
  padding: 1.05rem 1.15rem;
}
.kette-note strong { color: var(--heading); }

/* Mini-Auftritt auf der Startseite */

.kette-shell.is-mini {
  background: var(--kette-paper);
  border: 1px solid var(--kette-line);
  border-radius: 1.2rem;
  box-shadow: var(--shadow);
  display: grid;
  gap: 1.2rem;
  grid-template-columns: minmax(0, 1fr) 11rem;
  padding: 1.1rem;
}
.is-mini .kette-log { background: none; border: 0; border-radius: 0; box-shadow: none; padding: 0; }
.is-mini .kette-row {
  grid-template-columns: 1.2rem 1.8rem minmax(0, 1fr) 4.6rem;
  padding: .45rem 0;
}
.is-mini .kette-row::before { left: .55rem; }
.is-mini .kette-row:first-child::before { top: .95rem; }
.is-mini .kette-row:last-child::before { bottom: calc(100% - .95rem); }
.is-mini .kette-node { margin-left: .27rem; margin-top: .42rem; }
.is-mini .kette-seq { font-size: .62rem; line-height: 1.55; }
.is-mini .kette-text { font-size: .8rem; line-height: 1.45; }
.is-mini .kette-hash { font-size: .58rem; line-height: 1.7; }
.is-mini .kette-tag,
.is-mini .kette-hint { display: none; }
.is-mini .kette-seal-card {
  background: none;
  border: 0;
  border-left: 1px solid var(--kette-line);
  border-radius: 0;
  box-shadow: none;
  padding: 0 0 0 1rem;
  position: static;
}
.is-mini .kette-seal { margin: .8rem auto; max-width: 6.2rem; }
.is-mini .kette-seal-short { font-size: .66rem; }
.is-mini .kette-facts,
.is-mini .kette-compare,
.is-mini .kette-archive,
.is-mini .kette-button.is-save,
.is-mini .kette-button.is-reseal { display: none; }
.is-mini .kette-status { font-size: .68rem; line-height: 1.45; min-height: 0; }
.is-mini .kette-actions { gap: .35rem; }
.is-mini .kette-button { font-size: .6rem; padding: .45rem .55rem; }

@media (max-width: 900px) {
  .kette-work { grid-template-columns: 1fr; }
  .kette-seal-card { position: static; }
  .kette-explain { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .kette-row { grid-template-columns: 1.3rem 1.9rem minmax(0, 1fr); }
  .kette-hash { grid-column: 3; justify-self: start; text-align: left; }
  .kette-row::before { left: .6rem; }
  .kette-row:first-child::before { top: 1.35rem; }
  .kette-row:last-child::before { bottom: calc(100% - 1.35rem); }
  .kette-node { margin-left: .29rem; }
  .kette-shell.is-mini { grid-template-columns: 1fr; }
  .is-mini .kette-row { grid-template-columns: 1.1rem 1.6rem minmax(0, 1fr) 3.6rem; }
  .is-mini .kette-seal-card { border-left: 0; border-top: 1px solid var(--kette-line); padding: .8rem 0 0; }
  .is-mini .kette-seal { display: none; }
  .kette-hero h1 { letter-spacing: -.03em; }
}

@media (prefers-reduced-motion: reduce) {
  .kette-row.is-fresh { animation: none; }
  .kette-seal, .kette-chip, .kette-button { transition: none; }
}