/* Study navigation uses the approved German cover palette in every state. */
.series-copy{min-width:0}.study-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:13px}
.study-actions .series-start,.study-dialog-start{min-height:44px;font-size:.875rem;line-height:1.35;padding:10px 12px;max-width:100%;text-align:left}
.study-lessons-toggle{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:8px 12px;border:1px solid var(--control-border);border-radius:25px;background:var(--paper);color:var(--accent);font-size:.875rem;font-weight:700;line-height:1.35;text-align:left;max-width:100%}
.study-lessons-toggle:hover{background:var(--accent);border-color:var(--accent);color:#fff}.study-lessons-toggle:active{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff}
.study-lesson-count{display:grid;place-items:center;min-width:25px;height:25px;padding:0 5px;border-radius:50%;background:var(--gold);color:var(--cover-navy);font-size:.8125rem;flex-shrink:0}
.study-dialog{padding:0;border:1px solid var(--line);border-radius:20px;width:min(610px,calc(100% - 32px));max-height:min(760px,calc(100dvh - 40px));color:var(--ink);background:var(--paper);box-shadow:0 30px 100px #08090988}
.study-dialog[open]{display:flex;flex-direction:column}.study-dialog::backdrop{background:#080909b8;backdrop-filter:blur(5px)}
.study-dialog-header{display:flex;align-items:center;gap:16px;padding:22px 24px;background:linear-gradient(130deg,var(--cover-navy),var(--accent-hover));color:#fff;flex-shrink:0}
.study-dialog-header>img{width:68px;height:68px;border-radius:9px;border:1px solid var(--gold-tint);box-shadow:0 4px 15px #08090960;flex-shrink:0}
.study-dialog-heading{flex:1;min-width:0}.study-dialog-eyebrow{font-size:.8125rem;letter-spacing:1px;text-transform:uppercase;color:var(--gold-tint)}
.study-dialog-heading h2{font-family:Manrope,sans-serif;font-size:1.75rem;line-height:1.2;letter-spacing:-.7px;margin:5px 0 4px;overflow-wrap:anywhere}.study-dialog-heading p{margin:0;color:var(--gold-tint);font-size:.875rem}
.study-dialog-close{display:grid;place-items:center;border:1px solid var(--gold-tint);border-radius:50%;background:transparent;color:#fff;width:44px;height:44px;flex-shrink:0}
.study-dialog-close:hover{background:var(--gold);border-color:var(--gold);color:var(--cover-navy)}.study-dialog-close:active{background:var(--gold-hover);border-color:var(--gold-hover);color:var(--cover-navy)}.study-dialog-close svg{width:19px;height:19px}
.study-dialog-actions{padding:17px 24px 10px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;flex-shrink:0}
.study-lesson-list{list-style:none;padding:0 17px 18px;margin:0;overflow-y:auto;min-height:0;overscroll-behavior:contain;scrollbar-color:var(--control-border) var(--paper)}
.study-lesson-list li+li{border-top:1px solid var(--line)}
.study-lesson{display:flex;align-items:center;gap:12px;width:100%;padding:12px 7px;min-height:72px;border:0;border-radius:9px;background:transparent;text-align:left;color:var(--ink)}
.study-lesson:hover{background:#fff5bf}.study-lesson:active{background:var(--gold-tint)}.study-lesson:focus-visible{outline-offset:-3px}
.study-lesson-number{display:grid;place-items:center;font-size:.875rem;font-weight:700;color:var(--cover-navy);background:var(--gold);width:29px;height:29px;border-radius:50%;flex-shrink:0;font-variant-numeric:tabular-nums}
.study-lesson>img{width:48px;height:48px;border-radius:6px;flex-shrink:0}.study-lesson-copy{flex:1;min-width:0;overflow-wrap:anywhere}
.study-lesson-copy strong{display:block;font-family:Manrope,sans-serif;font-size:.9375rem;line-height:1.4;font-weight:800}.study-lesson-copy small{display:block;margin-top:3px;font-size:.875rem;line-height:1.5;color:var(--muted)}
.study-lesson-note{display:block;margin-top:5px;font-size:.875rem;line-height:1.5;color:var(--accent)}
.study-lesson-play{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;flex-shrink:0}.study-lesson-play svg{width:13px;height:13px;fill:currentColor;stroke:none}
.study-lesson:hover .study-lesson-play,.study-lesson:active .study-lesson-play{background:var(--gold);color:var(--cover-navy)}.study-empty{padding:0 24px 24px;font-size:1rem;line-height:1.6}
@media(max-width:760px){.study-actions{gap:8px}.study-dialog{width:calc(100% - 20px);max-height:calc(100dvh - 24px);border-radius:17px}.study-dialog-header{padding:19px 17px;gap:13px}.study-dialog-header>img{width:60px;height:60px}.study-dialog-heading h2{font-size:1.5625rem}.study-dialog-actions{padding:15px 17px 9px}.study-lesson-list{padding:0 10px 12px}.study-lesson{gap:9px;padding:11px 7px}.study-lesson>img{width:43px;height:43px}.study-lesson-play{width:27px;height:27px}.study-lesson-copy strong{font-size:.875rem}}
@media(max-width:360px){.study-dialog-header{gap:10px;padding:16px 13px}.study-dialog-header>img{width:50px;height:50px}.study-dialog-heading h2{font-size:1.375rem}.study-lesson{gap:7px}.study-lesson-number{width:25px;height:25px}.study-lesson>img{width:38px;height:38px}.study-lesson-play{width:25px;height:25px}}