.page-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    width: min(100%, 800px);
    margin: 0 auto 2rem;
    margin-bottom: 2rem;
    font-family: 'Veteran Typewriter', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.letter {
    width: min(100%, 800px);
    margin: 0 auto 2rem;
    background: var(--light-color);
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.35);
    padding: 1.5rem 2rem;
    color: var(--text-color);
}

.letter .kicker,
.letter .intro {
    color: var(--text-color);
}


.back-link {
    color: var(--text-light);
    opacity: 0.6;
    text-decoration: none;
    transition: opacity 120ms ease;
}

.back-link:hover {
    opacity: 1;
    color: var(--primary-color);
}

.signal-id {
    color: var(--primary-color);
}

.puzzle-list {
    width: min(100%, 800px);
    margin: 2rem auto 0;
}

.puzzle-strip {
    background: var(--light-color);
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.35);
    margin-bottom: 1rem;
    overflow: hidden;
}

.puzzle-strip.disabled {
    opacity: 0.55;
}

.puzzle-strip-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 1rem;
    background: none;
    border: none;
    padding: 1.1rem 1.5rem;
    cursor: pointer;
    text-align: left;
    font-family: Arial, sans-serif;
    color: var(--text-color);
}

.puzzle-strip-toggle:disabled {
    cursor: default;
}

.puzzle-number {
    font-family: 'Veteran Typewriter', monospace;
    font-size: 0.85rem;
    color: var(--primary-color);
    letter-spacing: 0.05em;
}

.puzzle-title {
    font-family: 'Veteran Typewriter', monospace;
    font-size: 1.95rem;
    letter-spacing: 0.03em;
    color: var(--primary-color);
    flex: 1;
}

.coming-soon {
    font-family: 'Veteran Typewriter', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-color);
    opacity: 0.6;
}

.chevron {
    font-size: 1rem;
    color: var(--text-color);
    opacity: 0.6;
    transition: transform 180ms ease;
}

.puzzle-strip-toggle[aria-expanded="true"] .chevron {
    transform: rotate(180deg);
}

.puzzle-panel {
    padding: 0 1.5rem 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
}

.puzzle-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0 0.75rem;
}

.difficulty {
    font-family: 'Veteran Typewriter', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border-radius: 0.2rem;
    background: rgba(0, 0, 0, 0.06);
    color: var(--text-color);
}

.difficulty-easy {
    color: #2d6a2d;
}

.difficulty-medium {
    color: #8b6914;
}

.difficulty-hard {
    color: var(--primary-color);
}

.tag {
    font-family: 'Veteran Typewriter', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    padding: 0.2rem 0.6rem;
    border-radius: 0.2rem;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    opacity: 0.75;
}

.puzzle-teaser {
    font-family: Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.65;
    margin: 0 0 1.25rem;
    max-width: 62ch;
    color: var(--text-color);
}

.puzzle-panel .button {
    display: inline-block;
    font-family: 'Veteran Typewriter', monospace;
    font-size: 0.9rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--text-light);
    background: var(--primary-color);
    padding: 0.6rem 1.25rem;
    border-radius: 0.25rem;
    transition: opacity 120ms ease;
}

.puzzle-panel .button:hover {
    opacity: 0.85;
}

.page-footer {
    margin-top: 3rem;
    text-align: center;
}

.page-footer p {
    font-family: 'Veteran Typewriter', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-light);
    opacity: 0.6;
}

@media (max-width: 520px) {
    .puzzle-strip-toggle {
        padding: 1rem;
        gap: 0.6rem;
    }

    .puzzle-title {
        font-size: 1.4rem;
    }
}

/* ===== Status-varianten ===== */
.status-soon {
    opacity: 0.55;
}

.status-teaser {
    opacity: 0.8;
}

.strip-label {
    font-family: 'Veteran Typewriter', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.label-muted {
    color: var(--text-color);
    opacity: 0.5;
}

.label-accent {
    color: var(--primary-color);
}

.teaser-muted {
    opacity: 0.75;
    font-style: italic;
}