/* letters.html — letters page only. Loaded after css/shared.css. */

/* Photo frame: this page's specific shadow depth, for the one real scan. */
.photo-frame {
    box-shadow: 0 4px 10px rgba(27, 28, 25, 0.10);
    transition: box-shadow 400ms ease-out;
}

/* Letters read as kept keepsakes, not UI cards: warm parchment tone,
   sitting on the surrounding surface-container-low grid the way the
   design system's tonal-layering rule calls for (a lighter card on a
   slightly deeper background) instead of a drop shadow doing the lifting. */
.letter-card {
    position: relative;
    background: linear-gradient(180deg, #fffdf8 0%, #faf6ea 100%);
    border-radius: 0.4rem;
    box-shadow: inset 0 0 0 1px rgba(124, 140, 160, 0.14);
    transition: transform 400ms ease-out, box-shadow 400ms ease-out, background 400ms ease-out;
    overflow: hidden;
}
.letter-card[data-category="family"] {
    background: linear-gradient(180deg, #fff9f4 0%, #f4e6d8 100%);
}
.letter-card[data-category="family-circle"] {
    background: linear-gradient(180deg, #faf7f2 0%, #efe6da 100%);
}
.letter-card[data-category="friends"] {
    background: linear-gradient(180deg, #f6faf5 0%, #e4efe3 100%);
}
.letter-card[data-category="army"] {
    background: linear-gradient(180deg, #f5f6f0 0%, #e6e7d8 100%);
}
.letter-card[data-category="articles"] {
    background: linear-gradient(180deg, #f5f7fb 0%, #e4ebf3 100%);
}
.letter-card[data-category="writings"] {
    background: linear-gradient(180deg, #fffdf4 0%, #f3ead0 100%);
}
/* A folded top corner, like a kept page — quiet nod to "this is a real
   letter" without leaning on shadow for depth. */
.letter-fold {
    position: absolute;
    top: 0;
    inset-inline-end: 0;
    width: 1.5rem;
    height: 1.5rem;
    background: linear-gradient(135deg, transparent 50%, rgba(124, 140, 160, 0.16) 50%);
    pointer-events: none;
}
.letter-tag {
    padding-block: 0.15rem;
}
.letter-body {
    font-family: var(--font-sans);
    font-style: italic;
    line-height: 1.85;
}
.letter-signature {
    font-family: var(--font-sans);
    font-style: italic;
    font-weight: 600;
}
.letter-grid .letter-card:hover,
.letter-grid .letter-card:focus-within {
    transform: translateY(-3px);
    box-shadow: inset 0 0 0 1px rgba(124, 140, 160, 0.28), 0 20px 40px rgba(27, 28, 25, 0.06);
}
.line-clamp-5 {
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Reader modal */
#letter-reader {
    opacity: 0;
    transition: opacity 280ms ease-out;
}
#letter-reader.reader-open {
    opacity: 1;
}
#letter-reader .letter-card {
    transform: none !important;
}
#reader-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: scale(0.97) translateY(6px);
    transition: opacity 300ms ease-out, transform 300ms ease-out;
    box-shadow: 0 20px 40px rgba(27, 28, 25, 0.14);
}
#reader-card.reader-card-visible {
    opacity: 1;
    transform: scale(1) translateY(0);
}
.reader-header {
    flex-shrink: 0;
    z-index: 1;
    background-color: #fffdf8;
    box-shadow: 0 10px 18px -14px rgba(27, 28, 25, 0.28);
}
#reader-card[data-category="family"] .reader-header { background-color: #fff9f4; }
#reader-card[data-category="family-circle"] .reader-header { background-color: #faf7f2; }
#reader-card[data-category="friends"] .reader-header { background-color: #f6faf5; }
#reader-card[data-category="army"] .reader-header { background-color: #f5f6f0; }
#reader-card[data-category="articles"] .reader-header { background-color: #f5f7fb; }
#reader-card[data-category="writings"] .reader-header { background-color: #fffdf4; }
.reader-scroll {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
}

@media (prefers-reduced-motion: reduce) {
    .letter-card, .letter-card:hover, #reader-card { transition: none; }
}