/* =====================================================
   Strumming Pattern Trainer — Stylesheet
   Einbinden: <link rel="stylesheet" href="strumming-trainer.css">
   ===================================================== */

#strumming-trainer {
  --st-bg:          #f5f4f0;
  --st-surface:     #ffffff;
  --st-surface-2:   #f0efe9;
  --st-border:      rgba(0,0,0,.12);
  --st-border-str:  rgba(0,0,0,.22);
  --st-text:        #1a1a18;
  --st-text-sec:    #6b6b66;
  --st-text-muted:  #9e9e99;
  --st-accent:      #185fa5;
  --st-down-col:    #185fa5;
  --st-down-bg:     #e6f1fb;
  --st-down-bd:     #85b7eb;
  --st-up-col:      #993c1d;
  --st-up-bg:       #faece7;
  --st-up-bd:       #f0997b;
  --st-radius:      8px;

  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  color: var(--st-text);
  background: var(--st-bg);
  border-radius: 16px;
  border: 0.5px solid var(--st-border);
  padding: 1.75rem;
  max-width: 780px;
  margin: 0 auto;
  box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
  #strumming-trainer {
    --st-bg:          #1c1c1a;
    --st-surface:     #282825;
    --st-surface-2:   #323230;
    --st-border:      rgba(255,255,255,.1);
    --st-border-str:  rgba(255,255,255,.2);
    --st-text:        #ebebea;
    --st-text-sec:    #a0a09b;
    --st-text-muted:  #6b6b66;
    --st-accent:      #53a7e8;
    --st-down-col:    #53a7e8;
    --st-down-bg:     #0c3a5e;
    --st-down-bd:     #1a6faa;
    --st-up-col:      #e8855a;
    --st-up-bg:       #4a1e0e;
    --st-up-bd:       #8a3d1a;
  }
}

#strumming-trainer *,
#strumming-trainer *::before,
#strumming-trainer *::after {
  box-sizing: border-box;
}

/* Controls */
#strumming-trainer .st-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-end;
  margin-bottom: 1.75rem;
}

#strumming-trainer .st-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
#strumming-trainer .st-field label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--st-text-sec);
}

#strumming-trainer select {
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--st-surface-2);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b6b66' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  border: 0.5px solid var(--st-border-str);
  border-radius: var(--st-radius);
  color: var(--st-text);
  font-size: 14px;
  height: 38px;
  min-width: 230px;
  padding: 0 32px 0 12px;
  cursor: pointer;
}
#strumming-trainer select:focus {
  outline: 2px solid var(--st-accent);
  outline-offset: 1px;
}

#strumming-trainer .st-bpm-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}
#strumming-trainer .st-bpm-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--st-surface-2);
  border: 0.5px solid var(--st-border-str);
  color: var(--st-text);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .12s;
}
#strumming-trainer .st-bpm-btn:hover {
  background: var(--st-bg);
}
#strumming-trainer .st-bpm-val {
  font-size: 22px;
  font-weight: 600;
  min-width: 50px;
  text-align: center;
  color: var(--st-text);
}
#strumming-trainer .st-bpm-unit {
  font-size: 11px;
  color: var(--st-text-muted);
  align-self: flex-end;
  padding-bottom: 5px;
}

#strumming-trainer .st-play-btn {
  height: 42px;
  padding: 0 1.5rem;
  border-radius: var(--st-radius);
  border: none;
  background: var(--st-accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  transition: opacity .15s, background .15s, border .15s, color .15s;
}
#strumming-trainer .st-play-btn:hover {
  opacity: .88;
}
#strumming-trainer .st-play-btn.playing {
  background: var(--st-surface-2);
  color: var(--st-text);
  border: 0.5px solid var(--st-border-str);
}
#strumming-trainer .st-play-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Beat grid */
#strumming-trainer .st-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1.5rem;
  min-height: 118px;
}

#strumming-trainer .st-beat {
  width: 62px;
  height: 110px;
  border-radius: 12px;
  background: var(--st-surface-2);
  border: 0.5px solid var(--st-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background .07s, border-color .07s, transform .07s;
  user-select: none;
}

#strumming-trainer .st-arrow {
  font-size: 46px;
  line-height: 1;
}
#strumming-trainer .st-beat.down .st-arrow { color: var(--st-down-col); }
#strumming-trainer .st-beat.up   .st-arrow { color: var(--st-up-col); }
#strumming-trainer .st-beat.mute .st-arrow { color: var(--st-text-muted); font-size: 30px; }

#strumming-trainer .st-pos {
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  color: var(--st-text-sec);
}
#strumming-trainer .st-beat.on-plus .st-pos {
  font-size: 18px;
  font-weight: 400;
  color: var(--st-text-muted);
}

/* Active states */
#strumming-trainer .st-beat.active.down {
  background: var(--st-down-bg);
  border-color: var(--st-down-bd);
  transform: scale(1.08);
}
#strumming-trainer .st-beat.active.up {
  background: var(--st-up-bg);
  border-color: var(--st-up-bd);
  transform: scale(1.08);
}
#strumming-trainer .st-beat.active.mute {
  background: var(--st-surface-2);
  border-color: var(--st-border-str);
  transform: scale(1.04);
}

/* 6/8 Gruppenmarkierung */
#strumming-trainer .st-beat.group-sep { margin-left: 14px; }

/* Eigenes Pattern */
#strumming-trainer .st-custom-row {
  display: none;
  margin-top: -4px;
  margin-bottom: 1.5rem;
}
#strumming-trainer .st-custom-row.visible { display: block; }
#strumming-trainer .st-custom-row label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--st-text-sec);
  display: block;
  margin-bottom: 5px;
}
#strumming-trainer .st-custom-row input {
  height: 38px;
  padding: 0 12px;
  border: 0.5px solid var(--st-border-str);
  border-radius: var(--st-radius);
  background: var(--st-surface-2);
  color: var(--st-text);
  font-size: 15px;
  letter-spacing: .1em;
  font-family: 'SF Mono', 'Fira Mono', 'Cascadia Code', monospace;
  width: 100%;
  max-width: 320px;
}
#strumming-trainer .st-custom-row input:focus {
  outline: 2px solid var(--st-accent);
  outline-offset: 1px;
}
#strumming-trainer .st-custom-row input::placeholder {
  color: var(--st-text-muted);
  letter-spacing: .04em;
}

/* Legend */
#strumming-trainer .st-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 13px;
  color: var(--st-text-sec);
  border-top: 0.5px solid var(--st-border);
  padding-top: 1.25rem;
}
#strumming-trainer .st-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
#strumming-trainer .st-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
#strumming-trainer .st-dot.d { background: var(--st-down-col); }
#strumming-trainer .st-dot.u { background: var(--st-up-col); }
#strumming-trainer .st-dot.m { background: var(--st-text-muted); }

/* Responsive */
@media (max-width: 520px) {
  #strumming-trainer {
    padding: 1.25rem;
  }
  #strumming-trainer .st-play-btn {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }
  #strumming-trainer .st-beat {
    width: 54px;
    height: 96px;
  }
  #strumming-trainer .st-arrow {
    font-size: 38px;
  }
}