/* ============================================================
   PDF Reader App — Glassmorphism theme
   ============================================================ */

/* ─── App Root ─── */
.app-pdf-reader {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-sans);
    color: var(--text-bright);
}

/* ─── Toolbar ─── */
.pdf-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--glass-surface-2);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    gap: 8px;
}

.pdf-toolbar__left {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex: 1;
}

.pdf-toolbar__name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-bright);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdf-toolbar__actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

/* ─── Buttons ─── */
.pdf-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--text-bright);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    border-radius: var(--radius-md);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    white-space: nowrap;
    font-family: inherit;
}

.pdf-btn:hover {
    background: rgba(var(--accent-rgb), 0.18);
    border-color: rgba(var(--accent-rgb), 0.3);
}

.pdf-btn:active {
    background: rgba(var(--accent-rgb), 0.25);
    transform: scale(0.98);
}

.pdf-btn--primary {
    background: rgba(var(--accent-rgb), 0.2);
    border-color: rgba(var(--accent-rgb), 0.3);
    font-size: 14px;
    padding: 10px 20px;
}

.pdf-btn--primary:hover {
    background: rgba(var(--accent-rgb), 0.3);
    border-color: rgba(var(--accent-rgb), 0.4);
}

/* ─── PDF Viewer ─── */
.pdf-viewer-wrap {
    flex: 1;
    overflow: hidden;
    background: #2a2a2e;
    position: relative;
}

.pdf-embed {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* ─── Empty State ─── */
.pdf-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 32px 24px;
    text-align: center;
}

.pdf-empty__icon {
    font-size: 56px;
    line-height: 1;
    opacity: 0.6;
    filter: grayscale(0.3);
}

.pdf-empty__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-bright);
}

.pdf-empty__hint {
    font-size: 13px;
    color: var(--text-muted);
    max-width: 260px;
    line-height: 1.5;
}

/* ─── Drop Overlay ─── */
.pdf-drop-overlay {
    position: absolute;
    inset: 0;
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    pointer-events: none;
}

.pdf-drop-overlay.is-visible {
    display: flex;
}

.pdf-drop-overlay__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 32px 48px;
    border: 2px dashed rgba(var(--accent-rgb), 0.4);
    border-radius: var(--radius-lg, 12px);
    color: var(--text-bright);
    font-size: 16px;
    font-weight: 500;
}

.pdf-drop-overlay__icon {
    font-size: 40px;
    animation: pdf-bounce 1s ease infinite;
}

@keyframes pdf-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* ─── Recent PDFs ─── */
.pdf-recents {
    margin-top: 20px;
    width: 100%;
    max-width: 360px;
    text-align: left;
}

.pdf-recents__title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 8px;
    padding: 0 4px;
}

.pdf-recents__list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pdf-recent-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: rgba(var(--accent-rgb), 0.06);
    border: 1px solid rgba(var(--accent-rgb), 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: left;
    width: 100%;
    transition: background 0.15s, border-color 0.15s;
    font-family: inherit;
}

.pdf-recent-item:hover {
    background: rgba(var(--accent-rgb), 0.12);
    border-color: rgba(var(--accent-rgb), 0.25);
}

.pdf-recent-item__icon {
    font-size: 16px;
    flex-shrink: 0;
}

.pdf-recent-item__name {
    flex: 1;
    font-size: 13px;
    color: var(--text-bright);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdf-recent-item__date {
    font-size: 11px;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* ─── Responsive ─── */
@media (max-width: 480px) {
    .pdf-toolbar {
        flex-wrap: wrap;
        padding: 6px 8px;
    }

    .pdf-toolbar__actions {
        flex-wrap: wrap;
    }

    .pdf-btn {
        font-size: 11px;
        padding: 5px 8px;
    }
}