/* ------------------------------------------------------------------
   Türkçe Adım Adım – Design "İznik"
   Farbwelt der osmanischen İznik-Kacheln: Kobaltblau, Türkis, Korallenrot
   auf warmem Elfenbein. Dunkler Grundton, damit lange Lernsessions
   die Augen nicht ermüden.
------------------------------------------------------------------- */

:root{
  --bg:            #0e1a24;
  --bg-2:          #142633;
  --surface:       #17303f;
  --surface-2:     #1e3c4e;
  --line:          #27506611;
  --border:        #2a5063;
  --ink:           #eaf2f5;
  --ink-soft:      #a9c2ce;
  --ink-faint:     #6e8b99;
  --turquoise:     #34c6b4;
  --turquoise-dim: #1f7d72;
  --coral:         #ff6f5e;
  --gold:          #e6b566;
  --cobalt:        #3f7fd1;
  --radius:        14px;
  --radius-lg:     22px;
  --shadow:        0 10px 30px rgba(0,0,0,.35);
  --serif:         "Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:          system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:
    radial-gradient(1100px 600px at 12% -10%, #1b3f52 0%, transparent 60%),
    radial-gradient(900px 500px at 105% 0%, #1d3a4d 0%, transparent 55%),
    var(--bg);
  background-attachment:fixed;
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
.hidden{display:none !important}
em{font-style:italic}

/* ------------------------------------------------------------- Login */
.login{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-box{width:100%;max-width:380px;text-align:center}
.brand-mark{color:var(--gold);font-size:.9em}
.brand h1{font-family:var(--serif);font-weight:400;font-size:2.4rem;line-height:1.1;margin:.4em 0 .2em}
.brand h1 em{color:var(--turquoise)}
.brand-sub{color:var(--ink-faint);margin:0 0 2rem;font-size:.95rem}
#loginForm{display:flex;flex-direction:column;gap:12px}

input[type=password],input[type=text]{
  width:100%;padding:14px 16px;border-radius:var(--radius);
  border:1px solid var(--border);background:var(--surface);color:var(--ink);
  font-size:1rem;font-family:inherit;
}
input:focus{outline:2px solid var(--turquoise);outline-offset:1px}
.err{color:var(--coral);min-height:1.2em;font-size:.9rem;margin:.2em 0 0}

/* ------------------------------------------------------------ Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:12px 18px;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--surface);color:var(--ink);font:inherit;font-weight:600;
  cursor:pointer;transition:transform .08s ease, background .15s ease, border-color .15s;
}
.btn:hover{background:var(--surface-2)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--turquoise);border-color:var(--turquoise);color:#04201d}
.btn.primary:hover{background:#43dcc8}
.btn.ghost{background:transparent}
.btn.small{padding:7px 12px;font-size:.85rem;font-weight:500}
.linkbtn{background:none;border:0;color:var(--ink-faint);font:inherit;cursor:pointer;text-decoration:underline}
.linkbtn:hover{color:var(--ink)}

/* ------------------------------------------------------------- Topbar */
.topbar{
  position:sticky;top:0;z-index:20;
  background:rgba(14,26,36,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.topbar-inner{max-width:820px;margin:0 auto;padding:10px 18px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.logo{font-family:var(--serif);font-size:1.1rem;color:var(--ink);text-decoration:none;white-space:nowrap}
.logo em{color:var(--turquoise)}
.tabs{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.tabs a{
  padding:7px 13px;border-radius:999px;color:var(--ink-soft);text-decoration:none;
  font-size:.9rem;font-weight:500;position:relative;
}
.tabs a:hover{background:var(--surface)}
.tabs a.active{background:var(--turquoise-dim);color:#eafffb}
.badge{
  display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;margin-left:6px;
  border-radius:999px;background:var(--coral);color:#2a0a06;font-size:.72rem;font-weight:700;
}

main{max-width:820px;margin:0 auto;padding:22px 18px 70px}

/* --------------------------------------------------------------- Cards */
.card{
  background:linear-gradient(180deg,var(--surface) 0%,var(--bg-2) 100%);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:20px;margin-bottom:16px;box-shadow:var(--shadow);
}
h2{font-family:var(--serif);font-weight:400;font-size:1.7rem;margin:.2em 0 .1em}
h3{font-size:1rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-faint);margin:1.6em 0 .6em;font-weight:600}
.muted{color:var(--ink-faint)}
.small{font-size:.88rem}

/* Lektionsliste */
.lesson-card{display:block;text-decoration:none;color:inherit;position:relative;overflow:hidden}
.lesson-card:hover{border-color:var(--turquoise)}
.lesson-card .num{
  position:absolute;right:14px;top:6px;font-family:var(--serif);font-size:4.5rem;
  color:#ffffff0d;line-height:1;pointer-events:none;
}
.lesson-card .tr-title{font-family:var(--serif);font-size:1.5rem;color:var(--turquoise)}
.lesson-card .de-title{color:var(--ink-soft)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.chip{
  font-size:.76rem;padding:3px 10px;border-radius:999px;
  background:#ffffff0f;border:1px solid var(--border);color:var(--ink-soft);
}
.chip.done{background:var(--turquoise-dim);color:#eafffb;border-color:transparent}

/* ------------------------------------------------- Zehnerblöcke (Packs) */
.pack{
  border:1px solid var(--border);border-radius:var(--radius-lg);
  margin-bottom:14px;overflow:hidden;background:#ffffff06;
}
.pack > summary{
  list-style:none;cursor:pointer;padding:18px 20px;position:relative;
  display:grid;grid-template-columns:auto 1fr;gap:4px 14px;align-items:center;
  transition:background .15s;
}
.pack > summary::-webkit-details-marker{display:none}
.pack > summary:hover{background:#ffffff08}
.pack-range{
  grid-row:1 / span 2;font-family:var(--serif);font-size:1.5rem;color:var(--turquoise);
  min-width:74px;
}
.pack-title{font-family:var(--serif);font-size:1.35rem;line-height:1.1}
.pack-meta{font-size:.82rem;color:var(--ink-faint)}
.pack-bar{
  grid-column:1 / -1;height:3px;border-radius:99px;background:#ffffff12;
  margin-top:10px;overflow:hidden;
}
.pack-bar i{display:block;height:100%;background:var(--turquoise);transition:width .3s}
.pack > summary::after{
  content:'▾';position:absolute;right:20px;top:20px;color:var(--ink-faint);
  transition:transform .2s;font-size:.9rem;
}
.pack[open] > summary::after{transform:rotate(180deg)}
.pack[open] > summary{border-bottom:1px solid var(--border)}
.pack-body{padding:16px 16px 4px}
.pack-body .card{margin-bottom:12px}

/* Kurzgeschichte am Ende eines Blocks */
.story-card{
  display:block;text-decoration:none;color:inherit;position:relative;
  border-color:var(--gold);
  background:linear-gradient(180deg,#e6b5660f 0%,var(--bg-2) 100%);
}
.story-card:hover{border-color:var(--turquoise)}
.story-mark{position:absolute;right:18px;top:14px;font-size:1.6rem;color:var(--gold);opacity:.5}
.story-label{
  font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold);margin-bottom:6px;font-weight:600;
}
.story-card .tr-title{font-family:var(--serif);font-size:1.5rem;color:var(--turquoise)}
.story-card .de-title{color:var(--ink-soft)}

@media (max-width:520px){
  .pack-range{font-size:1.2rem;min-width:56px}
  .pack-title{font-size:1.1rem}
  .pack-body{padding:12px 10px 2px}
}

/* Sub-Tabs innerhalb einer Lektion */
.subtabs{display:flex;gap:6px;flex-wrap:wrap;margin:18px 0 4px}
.subtabs button{
  padding:8px 14px;border-radius:999px;border:1px solid var(--border);
  background:transparent;color:var(--ink-soft);font:inherit;font-size:.88rem;cursor:pointer;
}
.subtabs button.active{background:var(--surface-2);color:var(--ink);border-color:var(--turquoise)}

/* Geschichte */
.sentence{
  border-bottom:1px solid var(--border);padding:12px 0;display:flex;gap:12px;align-items:flex-start;
}
.sentence:last-child{border-bottom:0}
.sentence .txt{flex:1;cursor:pointer}
.sentence .tr{font-family:var(--serif);font-size:1.22rem;line-height:1.45}
.sentence .de{color:var(--ink-soft);font-size:.95rem;margin-top:4px;display:none}
.sentence.open .de{display:block}
.sentence .de.always{display:block}

.speak{
  flex:none;width:38px;height:38px;border-radius:50%;border:1px solid var(--border);
  background:var(--surface);color:var(--turquoise);cursor:pointer;font-size:1rem;
  display:grid;place-items:center;transition:background .15s;
}
.speak:hover{background:var(--surface-2)}
.speak.playing{background:var(--turquoise);color:#04201d;border-color:var(--turquoise)}
.speak:disabled{opacity:.35;cursor:default}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:6px}

/* Grammatik-Hinweis */
.hint{
  border-left:3px solid var(--gold);background:#e6b5660f;
  padding:12px 16px;border-radius:0 var(--radius) var(--radius) 0;color:var(--ink-soft);font-size:.94rem;
}

/* Redewendungen */
.phrase{padding:14px 0;border-bottom:1px solid var(--border)}
.phrase:last-child{border-bottom:0}
.phrase .p-tr{font-family:var(--serif);font-size:1.15rem;color:var(--turquoise)}
.phrase .p-de{margin-top:2px}
.phrase .p-note{color:var(--ink-faint);font-size:.88rem;margin-top:5px}

/* Vokabeltabelle */
.vocab-row{
  display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid var(--border);
}
.vocab-row:last-child{border-bottom:0}
.vocab-row .v-tr{font-family:var(--serif);font-size:1.1rem;min-width:38%;color:var(--ink)}
.vocab-row .v-de{color:var(--ink-soft);font-size:.95rem;flex:1}

/* --------------------------------------------------------- Karteikarten */
.flash{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;gap:14px;padding:34px 22px;
}
.flash .prompt{font-family:var(--serif);font-size:2.1rem;line-height:1.25}
.flash .answer{font-size:1.35rem;color:var(--turquoise);font-family:var(--serif)}
.flash .dir{font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint)}
.grade{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:6px}
.grade button{
  padding:14px 6px;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--surface);color:var(--ink);font:inherit;font-size:.85rem;cursor:pointer;
}
.grade button b{display:block;font-size:.95rem}
.grade button span{display:block;font-size:.7rem;color:var(--ink-faint);margin-top:2px}
.grade button:hover{border-color:var(--turquoise)}
.grade button.again:hover{border-color:var(--coral)}
.progressbar{height:5px;border-radius:99px;background:var(--surface);overflow:hidden;margin-bottom:14px}
.progressbar i{display:block;height:100%;background:var(--turquoise);transition:width .3s}

/* ---------------------------------------------------------------- Quiz */
.quiz-q{margin-bottom:10px;color:var(--ink-soft)}
.opt{
  display:block;width:100%;text-align:left;padding:13px 16px;margin-bottom:8px;
  border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);
  color:var(--ink);font:inherit;cursor:pointer;
}
.opt:hover{border-color:var(--turquoise)}
.opt.right{background:var(--turquoise-dim);border-color:var(--turquoise)}
.opt.wrong{background:#5a2320;border-color:var(--coral)}

/* ----------------------------------------------------------- Statistik */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-align:center}
.stat .n{font-family:var(--serif);font-size:2.1rem;color:var(--turquoise);line-height:1}
.stat .l{font-size:.8rem;color:var(--ink-faint);margin-top:6px}
.heat{display:flex;gap:3px;flex-wrap:wrap;margin-top:8px}
.heat i{width:12px;height:12px;border-radius:3px;background:var(--surface);display:block}
.heat i[data-l="1"]{background:#1f7d7255}
.heat i[data-l="2"]{background:#1f7d72aa}
.heat i[data-l="3"]{background:var(--turquoise)}

/* ---------------------------------------------------- Einstellungen */
.field{margin:22px 0}
.field label{display:block;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-faint);margin-bottom:7px;font-weight:600}
.field select,.field input[type=text],.field input[type=password]{
  width:100%;padding:12px 14px;border-radius:var(--radius);border:1px solid var(--border);
  background:var(--surface);color:var(--ink);font:inherit;font-size:.98rem;margin-bottom:8px;
}
.field select{appearance:none;cursor:pointer}
.field input[type=range]{flex:1;accent-color:var(--turquoise)}
.field p{margin:.35em 0 0}
code{background:#ffffff12;padding:1px 6px;border-radius:5px;font-size:.86em}

/* --------------------------------------------------- Benutzerverwaltung */
.user-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;
  padding:12px 0;border-bottom:1px solid var(--border)}
.user-row .u-name{font-family:var(--serif);font-size:1.15rem;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.user-row .chip{font-family:var(--sans)}
.user-row .toolbar{margin:0}

/* --------------------------------------------------------------- Rest */
.foot{max-width:820px;margin:0 auto;padding:18px;display:flex;justify-content:space-between;
  color:var(--ink-faint);font-size:.82rem;border-top:1px solid var(--border)}
.toast{
  position:fixed;left:50%;bottom:26px;transform:translateX(-50%);
  background:var(--surface-2);border:1px solid var(--border);color:var(--ink);
  padding:11px 18px;border-radius:999px;box-shadow:var(--shadow);z-index:50;font-size:.9rem;
}
.back{color:var(--ink-faint);text-decoration:none;font-size:.9rem}
.back:hover{color:var(--turquoise)}
.empty{text-align:center;padding:50px 20px;color:var(--ink-faint)}
.empty .big{font-size:3rem;margin-bottom:8px}

@media (max-width:520px){
  .brand h1{font-size:2rem}
  .sentence .tr{font-size:1.12rem}
  .flash .prompt{font-size:1.7rem}
  .grade{grid-template-columns:repeat(2,1fr)}
  .vocab-row{flex-wrap:wrap}
  .vocab-row .v-tr{min-width:0;flex:1}
}