/* Akquire: wie eine E-Mail entsteht (29.10.2026, Daniel: "the email looks very bad ... we have Clay tables and workflows
   and everything that is pretty sophisticated"). Eine gemeinsame Komponente für alle Akquire-Fallstudien, geladen mit
   `stil: ..., akquire-mail`. Präfix am-. Drei Teile, einzeln oder zusammen nutzbar:
     .am-fluss   der Clay-Workflow als Bühne: Quelle, Prüfung, Recherche, Menschen, Adressen, Text, Versand, echte Zahlen
     .am-tabelle ein echter Ausschnitt einer Clay-Tabelle, in unserer Gestaltung, Personen maskiert
     .am-paar    Datensatz und fertige E-Mail; jede persönliche Stelle ist mit ihrer Spalte verbunden (Faden, Nummer)
   Farben über Variablen, die Seite setzt sie auf dem Elternelement (Beispiel in akquire/fallstudien/unit8.html).
   Ohne JavaScript und mit «weniger Bewegung» steht alles vollständig untereinander. akquire-mail.js schaltet .am-an ein. */

.am-fluss, .am-werk {
  --am-grund: #07090f;
  --am-flaeche: rgba(255, 255, 255, .04);
  --am-text: #f5f6fa;
  --am-grau: #9ea2b0;
  --am-linie: rgba(255, 255, 255, .12);
  --am-akzent: #8ea4ff;
  --am-akzent-tief: #1343f0;
  --am-papier: #fbfbfd;
  --am-tinte: #15171f;
  --am-mark: rgba(19, 67, 240, .12);
  --am-mark-rand: #1343f0;
  color: var(--am-text);
  font-family: var(--font-body);
}
.am-fluss *, .am-werk *, .am-fluss *::before, .am-werk *::before, .am-fluss *::after, .am-werk *::after { box-sizing: border-box; }
.am-fluss p, .am-werk p { margin: 0; }
.am-werk .tech, .am-fluss .tech { vertical-align: -.12em; }

/* Kleine Marken: Art der Spalte, wie in Clay, aber in unserer Gestaltung */
.am-typ { display: inline-flex; align-items: center; justify-content: center; min-width: 1.45em; height: 1.45em; padding: 0 .35em; margin-right: .45em; border-radius: .4em;
  font: 700 .66em/1 var(--font-display); letter-spacing: .02em; vertical-align: .1em; color: #fff; background: #4b5163; flex: none; }
.am-typ--ki { background: linear-gradient(135deg, #7b5cf0, #c247c9); }
.am-typ--suche { background: linear-gradient(135deg, #0ea5a4, #2563eb); }
.am-typ--daten { background: #4b5163; }
.am-typ--pruef { background: #16a34a; }
.am-typ--versand { background: #7c3aed; }

/* 1 Workflow ------------------------------------------------------------ */
.am-fluss { position: relative; }
.am-fluss__schritte { list-style: none; margin: 0; padding: 0 0 0 1.9rem; position: relative; display: grid; gap: 1.6rem; counter-reset: am; }
.am-fluss__schritte::before { content: ""; position: absolute; left: .5rem; top: .6rem; bottom: .6rem; width: 2px; border-radius: 2px; background: var(--am-linie); }
.am-fluss__schritte::after { content: ""; position: absolute; left: .5rem; top: .6rem; width: 2px; border-radius: 2px; height: calc((100% - 1.2rem) * var(--am-p, 1)); background: linear-gradient(180deg, var(--am-akzent), var(--am-akzent-tief)); box-shadow: 0 0 18px var(--am-akzent); }
.am-schritt { position: relative; min-width: 0; padding: 1.2rem 1.3rem 1.3rem; border-radius: 20px; background: var(--am-flaeche); box-shadow: inset 0 0 0 1px var(--am-linie); }
.am-schritt::before { content: ""; position: absolute; left: -1.82rem; top: 1.45rem; width: .95rem; height: .95rem; border-radius: 50%; background: var(--am-grund); box-shadow: inset 0 0 0 2px var(--am-akzent); }
.am-schritt__kopf { display: flex; flex-wrap: wrap; align-items: baseline; gap: .3rem .9rem; }
.am-schritt__nr { font: 700 .78rem/1 var(--font-display); letter-spacing: .12em; text-transform: uppercase; color: var(--am-akzent); }
.am-schritt__zahl { font: 700 clamp(1.9rem, 3.6vw, 3rem)/1 var(--font-display); letter-spacing: -.04em; white-space: nowrap; font-variant-numeric: tabular-nums; }
.am-schritt__was { display: block; margin-top: .45rem !important; font: 600 clamp(1.02rem, 1.4vw, 1.2rem)/1.3 var(--font-display); }
.am-schritt__wie { display: block; margin-top: .35rem !important; color: var(--am-grau); line-height: 1.5; font-size: .95rem; }
.am-schritt__spalten { list-style: none; margin: .9rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.am-schritt__spalten li { display: inline-flex; align-items: center; min-width: 0; max-width: 100%; padding: .38rem .6rem; border-radius: 8px; background: rgba(255, 255, 255, .06); box-shadow: inset 0 0 0 1px var(--am-linie);
  font: 500 .8rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--am-text); overflow-wrap: anywhere; }
.am-schritt__spalten li .am-typ { font-size: .72rem; }
.am-schritt__quellen { list-style: none; margin: .9rem 0 0; padding: 0; display: grid; gap: .35rem; max-width: 30rem; }
.am-schritt__quellen li { display: grid; grid-template-columns: minmax(0, 9rem) minmax(0, 1fr) auto; align-items: center; gap: .6rem; font-size: .86rem; color: var(--am-grau); }
.am-schritt__quellen i { display: block; height: .5rem; border-radius: 999px; background: linear-gradient(90deg, var(--am-akzent-tief), var(--am-akzent)); width: calc(var(--w) * 1%); }
.am-schritt__quellen b { color: var(--am-text); font-variant-numeric: tabular-nums; }

/* Die Bühne (Karten des aktiven Schritts) baut akquire-mail.js; ohne Skript und unter 1000 px gibt es sie nicht */
.am-buehne { display: none; }

/* Bühne nur mit Skript und ab 1000 px: die Schritte laufen beim Scrollen durch, einer gross in der Mitte */
@media (min-width: 1000px) {
  .am-an .am-fluss { height: calc(var(--am-n, 7) * 62vh + 40vh); }
  .am-an .am-fluss__klebt { position: sticky; top: var(--nav-h, 74px); height: calc(100vh - var(--nav-h, 74px)); height: calc(100svh - var(--nav-h, 74px));
    display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.4fr); grid-template-rows: auto minmax(0, 1fr); gap: 1.2rem clamp(1.5rem, 4vw, 4rem); align-content: center; padding: 4.4rem var(--container-pad, 2.5rem) 2rem; max-width: var(--container-max, 84rem); margin: 0 auto; }
  .am-an .am-fluss__kopf { grid-column: 1 / -1; }
  .am-an .am-fluss__schritte { grid-column: 1; gap: .35rem; align-content: center; }
  .am-an .am-schritt { padding: .55rem .9rem; background: transparent; box-shadow: none; cursor: default; transition: opacity .35s ease; opacity: .55; }
  .am-an .am-schritt::before { top: .85rem; }
  .am-an .am-schritt.is-hier { opacity: 1; }
  .am-an .am-schritt.is-hier::before { background: var(--am-akzent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--am-akzent) 25%, transparent), 0 0 20px var(--am-akzent); }
  .am-an .am-schritt.is-durch::before { background: var(--am-akzent); }
  .am-an .am-schritt__zahl { font-size: 1.15rem; }
  .am-an .am-schritt__was { margin-top: .15rem !important; font-size: .98rem; }
  /* in der Liste nur für das Auge ausgeblendet: der Vorleser liest die Angaben hier, die Bühne ist aria-hidden */
  .am-an .am-fluss__schritte .am-schritt__wie, .am-an .am-fluss__schritte .am-schritt__spalten, .am-an .am-fluss__schritte .am-schritt__quellen { position: absolute; width: 1px; height: 1px; margin: 0; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .am-buehne__karte .am-schritt__wie { margin-top: 1rem !important; max-width: 40rem; }
  .am-buehne__karte .am-schritt__spalten { margin-top: 1.2rem; }
  .am-buehne__karte .am-schritt__quellen { margin-top: 1.2rem; }
  .am-an .am-buehne { display: block; grid-column: 2; grid-row: 2; position: relative; min-height: 0; align-self: center; }
  .am-buehne__karte { position: absolute; inset: auto 0; top: 50%; transform: translateY(-46%); opacity: 0; pointer-events: none; padding: clamp(1.4rem, 2.6vw, 2.4rem); border-radius: 26px;
    background: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .025)); box-shadow: inset 0 0 0 1px var(--am-linie), 0 40px 90px -40px rgba(0, 0, 0, .9); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
    transition: opacity .5s ease, transform .7s cubic-bezier(.2, .7, .1, 1); }
  .am-buehne__karte.is-hier { opacity: 1; transform: translateY(-50%); pointer-events: auto; }
  .am-buehne__karte { max-height: calc(100svh - var(--nav-h, 74px) - 3rem); overflow: hidden; }
  .am-buehne__karte .am-schritt__zahl { font-size: clamp(3rem, 6vw, 5.4rem); }
  .am-buehne__karte .am-schritt__was { font-size: clamp(1.2rem, 1.8vw, 1.6rem); }
  .am-buehne__karte .am-schritt__spalten li { opacity: 0; transform: translateY(8px); transition: opacity .4s ease, transform .5s ease; transition-delay: calc(var(--i, 0) * 45ms + 150ms); }
  .am-buehne__karte.is-hier .am-schritt__spalten li { opacity: 1; transform: none; }
  .am-buehne__karte .am-schritt__quellen i { width: 0; transition: width 1s cubic-bezier(.2, .7, .1, 1) .25s; }
  .am-buehne__karte.is-hier .am-schritt__quellen i { width: calc(var(--w) * 1%); }
}
@media (min-width: 1000px) and (max-height: 760px) {
  .am-an .am-fluss__klebt { padding-top: 4rem; gap: .8rem 3rem; }
  .am-an .am-schritt { padding: .3rem .8rem; }
  .am-an .am-fluss__schritte .am-schritt__was { position: absolute; width: 1px; height: 1px; margin: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .am-an .am-fluss__kopf h2 { font-size: clamp(1.8rem, 3.2vw, 2.8rem) !important; }
  .am-buehne__karte .am-schritt__zahl { font-size: clamp(2.6rem, 5vw, 4rem); }
}

/* 2 Tabelle ------------------------------------------------------------- */
.am-tabelle { margin: 0; min-width: 0; border-radius: 18px; overflow: hidden; background: #0d1018; box-shadow: inset 0 0 0 1px var(--am-linie), 0 40px 90px -45px rgba(0, 0, 0, .9); }
.am-tabelle__kopf { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem; padding: .85rem 1.1rem; border-bottom: 1px solid var(--am-linie); background: rgba(255, 255, 255, .03); font-size: .9rem; }
.am-tabelle__kopf b { font: 600 .95rem/1.3 var(--font-display); }
.am-tabelle__kopf span { color: var(--am-grau); }
.am-tabelle__rolle { overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: thin; }
.am-tabelle table { width: 100%; min-width: 46rem; border-collapse: collapse; font-size: .84rem; line-height: 1.4; }
.am-tabelle th { position: sticky; top: 0; text-align: left; font: 600 .76rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; color: #c9ccd8; padding: .6rem .8rem; background: #141824; border-bottom: 1px solid var(--am-linie); white-space: nowrap; }
.am-tabelle td { padding: .62rem .8rem; border-bottom: 1px solid rgba(255, 255, 255, .06); color: #d9dbe4; vertical-align: top; min-width: 8.5rem; max-width: 22rem; }
.am-tabelle td:first-child, .am-tabelle th:first-child { padding-left: 1.1rem; }
.am-tabelle tr:last-child td { border-bottom: 0; }
.am-tabelle tr.is-quelle td { background: color-mix(in srgb, var(--am-akzent) 10%, transparent); }
.am-tabelle tr.is-quelle td:first-child { box-shadow: inset 3px 0 0 var(--am-akzent); }
.am-tabelle .am-maske { display: inline-block; padding: .05em .45em; border-radius: .35em; background: rgba(255, 255, 255, .1); color: #b7bbc9; font-size: .92em; }
.am-tabelle .am-ok { color: #4ade80; }
.am-tabelle .am-zelle--lang { min-width: 16rem; color: #c3c6d2; }
.am-tabelle td.is-faden { background: color-mix(in srgb, var(--am-akzent) 22%, transparent); color: #fff; }
.am-tabelle__fuss { padding: .7rem 1.1rem; font-size: .8rem; color: var(--am-grau); border-top: 1px solid var(--am-linie); }

/* 3 Datensatz und E-Mail ------------------------------------------------- */
.am-paar { position: relative; display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(2.5rem, 6vw, 6rem); align-items: start; margin-top: clamp(1.4rem, 3vw, 2.2rem); }
.am-faeden { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; display: none; }
.am-an .am-faeden { display: block; }
.am-faeden path { fill: none; stroke: var(--am-akzent); stroke-width: 1.5; opacity: .22; transition: opacity .3s ease, stroke-width .3s ease; }
.am-faeden path.is-an { opacity: .6; }
.am-faeden path.is-fokus { opacity: 1; stroke-width: 2.2; }
.am-faeden circle { fill: var(--am-akzent); opacity: .22; transition: opacity .3s ease; }
.am-faeden circle.is-an { opacity: .6; }
.am-faeden circle.is-fokus { opacity: 1; }
.am-datensatz, .am-datensatz__liste { margin: 0; display: grid; gap: .6rem; min-width: 0; }
.am-datensatz__titel { font: 600 .78rem/1.3 var(--font-display); letter-spacing: .12em; text-transform: uppercase; color: var(--am-akzent); margin-bottom: .3rem !important; }
.am-feld { position: relative; min-width: 0; padding: .75rem .95rem; border-radius: 14px; background: var(--am-flaeche); box-shadow: inset 0 0 0 1px var(--am-linie); transition: box-shadow .3s ease, background .3s ease; }
.am-feld dt { display: flex; align-items: center; gap: .35rem; font: 600 .74rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; color: #c9ccd8; overflow-wrap: anywhere; }
.am-feld dd { margin: .35rem 0 0; font-size: .92rem; line-height: 1.45; color: var(--am-text); overflow-wrap: anywhere; }
.am-feld .am-maske { display: inline-block; padding: .05em .45em; border-radius: .35em; background: rgba(255, 255, 255, .1); color: #b7bbc9; }
.am-feld.is-fokus { background: color-mix(in srgb, var(--am-akzent) 14%, transparent); box-shadow: inset 0 0 0 1.5px var(--am-akzent); }
.am-n { display: inline-flex; align-items: center; justify-content: center; width: 1.35rem; height: 1.35rem; border-radius: 50%; flex: none; background: var(--am-akzent-tief); color: #fff; font: 700 .7rem/1 var(--font-display); }
.am-feld .am-n { margin-right: .2rem; }

.am-mail { margin: 0; min-width: 0; border-radius: 22px; overflow: hidden; background: var(--am-papier); color: var(--am-tinte); box-shadow: 0 60px 120px -50px rgba(0, 0, 0, .95), 0 0 0 1px rgba(255, 255, 255, .08); }
.am-mail__leiste { display: flex; align-items: center; gap: .45rem; padding: .75rem 1.2rem; background: #eef0f5; border-bottom: 1px solid #dfe2ea; }
.am-mail__leiste i { width: .7rem; height: .7rem; border-radius: 50%; background: #cfd3de; }
.am-mail__leiste span { margin-left: auto; font-size: .76rem; color: #6b7080; }
.am-mail__kopf { display: grid; gap: .45rem; padding: 1rem 1.4rem .9rem; border-bottom: 1px solid #e6e8ef; }
.am-mail__kopf p { display: flex; gap: .8rem; align-items: baseline; font-size: .92rem; line-height: 1.4; min-width: 0; }
.am-mail__kopf p > span:first-child { flex: 0 0 3.8rem; color: #6b7080; font-size: .8rem; }
.am-mail__kopf b { font-weight: 600; min-width: 0; }
.am-mail__text { padding: 1.3rem 1.4rem 1.5rem; display: grid; gap: .9rem; font-size: clamp(.95rem, 1.2vw, 1.05rem); line-height: 1.62; }
.am-mail__fuss { padding: .85rem 1.4rem 1.05rem; font-size: .8rem; line-height: 1.45; color: #5d6272; background: #f4f5f8; border-top: 1px solid #e6e8ef; }
.am-ph { position: relative; border-radius: .3em; padding: .02em .2em; margin: 0 -.1em; background: var(--am-mark); box-shadow: inset 0 -2px 0 var(--am-mark-rand); cursor: pointer; transition: background .25s ease; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.am-ph .am-n { width: 1.1rem; height: 1.1rem; font-size: .6rem; margin: 0 .25rem 0 0; vertical-align: .12em; }
.am-ph.is-fokus, .am-ph:hover, .am-ph:focus-visible { background: rgba(19, 67, 240, .24); outline: none; }
.am-mail__kopf b, .am-ph { -webkit-hyphens: manual; hyphens: manual; }
.am-maske-mail { display: inline-block; padding: 0 .4em; border-radius: .35em; background: #e6e8ef; color: #5d6272; font-size: .9em; }

/* Auftritt beim Scrollen: erst die Felder, dann ihre Stellen in der E-Mail */
.am-an .am-paar:not(.is-da) .am-feld { opacity: .35; }
.am-an .am-feld { transition: opacity .5s ease, box-shadow .3s ease, background .3s ease; transition-delay: calc(var(--i, 0) * 110ms); }
.am-an .am-paar:not(.is-da) .am-ph { background: transparent; box-shadow: inset 0 -2px 0 transparent; }
.am-an .am-ph { transition: background .5s ease, box-shadow .5s ease; transition-delay: calc(var(--i, 0) * 110ms + 250ms); }

@media (max-width: 999px) {
  .am-paar { grid-template-columns: minmax(0, 1fr); gap: 1.2rem; }
  .am-an .am-faeden { display: none; }
}
@media (max-width: 520px) {
  .am-mail__kopf, .am-mail__text, .am-mail__fuss { padding-left: 1rem; padding-right: 1rem; }
  .am-mail__kopf p > span:first-child { flex-basis: 3rem; }
  .am-schritt { padding: 1rem; }
}
@media (prefers-reduced-motion: reduce) {
  .am-fluss *, .am-werk * { transition: none !important; animation: none !important; }
}
@media (min-width: 1000px) and (max-height: 700px) {
  .am-buehne__karte .am-schritt__quellen { display: none; }
  .am-buehne__karte .am-schritt__wie { font-size: .9rem; }
}