/* ============================================================
   Kit Presse — Frontend Card View
   ============================================================ */

:root {
    --kp-radius:      8px;
    --kp-radius-lg:   14px;
    --kp-radius-card: 10px;
    --kp-border:      1px solid rgba(0,0,0,.08);
    --kp-border-em:   1px solid rgba(0,0,0,.15);
    --kp-bg:          #ffffff;
    --kp-bg-alt:      #f7f7f8;
    --kp-bg-info:     #edf4fe;
    --kp-text:        #111111;
    --kp-text-muted:  #6b7280;
    --kp-text-info:   #1d4ed8;
    --kp-accent:      #111111;
    --kp-accent-dark: #333333;
    --kp-sel-bg:      #f0f7ff;
    --kp-sel-border:  #3b82f6;
    --kp-trans:       .15s ease;
    --kp-shadow:      0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --kp-card-shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --kp-card-shadow-hover: 0 4px 12px rgba(0,0,0,.12), 0 2px 4px rgba(0,0,0,.06);
    --kp-section-bg:  #fafafa;
    --kp-preview-bg:  #f3f4f6;
    --kp-preview-h:   160px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --kp-bg:          #1f2937;
        --kp-bg-alt:      #111827;
        --kp-bg-info:     #1e3a5f;
        --kp-border:      1px solid rgba(255,255,255,.08);
        --kp-border-em:   1px solid rgba(255,255,255,.16);
        --kp-text:        #f9fafb;
        --kp-text-muted:  #9ca3af;
        --kp-text-info:   #93c5fd;
        --kp-accent:      #f9fafb;
        --kp-accent-dark: #e5e7eb;
        --kp-sel-bg:      #1e3a5f;
        --kp-shadow:      0 1px 4px rgba(0,0,0,.4);
        --kp-card-shadow: 0 1px 3px rgba(0,0,0,.3);
        --kp-card-shadow-hover: 0 4px 12px rgba(0,0,0,.5);
        --kp-section-bg:  #1a2535;
        --kp-preview-bg:  #111827;
    }
}

/* ── Wrapper ─────────────────────────────────── */

.kp-explorer {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    font-size: 14px;
    color: var(--kp-text);
    border: var(--kp-border);
    border-radius: var(--kp-radius-lg);
    overflow: hidden;
    box-shadow: var(--kp-shadow);
    background: var(--kp-bg);
    max-width: 100%;
}

.kp-explorer * { box-sizing: border-box; }

/* ── Toolbar ─────────────────────────────────── */

.kp-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: var(--kp-border);
    gap: 8px;
    flex-wrap: wrap;
    background: var(--kp-bg);
}

.kp-toolbar-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--kp-text);
    letter-spacing: -.01em;
}

.kp-toolbar-right { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }

.kp-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    padding: 7px 14px;
    border-radius: var(--kp-radius);
    border: var(--kp-border-em);
    background: transparent;
    color: var(--kp-text);
    cursor: pointer;
    transition: background var(--kp-trans), border-color var(--kp-trans);
    white-space: nowrap;
}
.kp-btn:hover { background: var(--kp-bg-alt); }

.kp-btn-primary {
    background: var(--kp-accent);
    color: var(--kp-bg);
    border-color: var(--kp-accent);
}
.kp-btn-primary:hover { background: var(--kp-accent-dark); border-color: var(--kp-accent-dark); }
.kp-btn-sm { padding: 4px 10px; font-size: 12px; }

/* ── Selection bar ───────────────────────────── */

.kp-selection-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background: var(--kp-bg-info);
    border-bottom: 1px solid rgba(59,130,246,.25);
    font-size: 12px;
    color: var(--kp-text-info);
    flex-wrap: wrap;
}

.kp-hidden { display: none !important; }

/* ── File list container ─────────────────────── */

.kp-file-list {
    padding: 0;
}

.kp-msg {
    color: var(--kp-text-muted);
    font-style: italic;
    padding: 32px 20px;
    margin: 0;
}

/* ── Section ─────────────────────────────────── */

.kp-section {
    border-top: var(--kp-border);
}

.kp-section:first-child {
    border-top: none;
}

/* ── Section header ──────────────────────────── */

.kp-section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px 12px calc(20px + var(--kp-depth, 0) * 20px);
    background: var(--kp-section-bg);
    position: sticky;
    top: 0;
    z-index: 2;
    user-select: none;
}

.kp-cb-folder {
    width: 15px;
    height: 15px;
    accent-color: var(--kp-accent);
    cursor: pointer;
    flex-shrink: 0;
    margin: 0;
}

.kp-folder-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--kp-text);
    letter-spacing: -.01em;
    flex: 1;
    min-width: 0;
}

.kp-folder-badge {
    font-size: 11px;
    color: var(--kp-text-muted);
    font-weight: 400;
    white-space: nowrap;
}

.kp-btn-dl-folder {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: inherit;
    font-size: 12px;
    font-weight: 500;
    padding: 5px 11px;
    border-radius: var(--kp-radius);
    border: var(--kp-border-em);
    background: var(--kp-bg);
    color: var(--kp-text);
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--kp-trans), opacity var(--kp-trans);
    opacity: 0;
    flex-shrink: 0;
}
.kp-section-header:hover .kp-btn-dl-folder { opacity: 1; }
.kp-btn-dl-folder:hover { background: var(--kp-bg-info); }

/* ── Card grid ───────────────────────────────── */

.kp-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
    padding: 16px 20px 20px;
    background: var(--kp-bg);
}

/* ── Card ────────────────────────────────────── */

.kp-card {
    position: relative;
    border: var(--kp-border);
    border-radius: var(--kp-radius-card);
    background: var(--kp-bg);
    box-shadow: var(--kp-card-shadow);
    cursor: pointer;
    overflow: hidden;
    transition: box-shadow var(--kp-trans), border-color var(--kp-trans), transform var(--kp-trans);
    display: flex;
    flex-direction: column;
}

.kp-card:hover {
    box-shadow: var(--kp-card-shadow-hover);
    border-color: rgba(0,0,0,.15);
    transform: translateY(-1px);
}

.kp-card.kp-selected {
    border-color: var(--kp-sel-border);
    box-shadow: 0 0 0 2px rgba(59,130,246,.2), var(--kp-card-shadow);
    background: var(--kp-sel-bg);
}

.kp-card.kp-selected:hover {
    box-shadow: 0 0 0 2px rgba(59,130,246,.3), var(--kp-card-shadow-hover);
}

/* Checkbox overlay */
.kp-cb-file {
    position: absolute;
    top: 8px;
    left: 8px;
    width: 16px;
    height: 16px;
    accent-color: var(--kp-sel-border);
    cursor: pointer;
    z-index: 2;
    margin: 0;
    opacity: 0;
    transition: opacity var(--kp-trans);
}

.kp-card:hover .kp-cb-file,
.kp-card.kp-selected .kp-cb-file {
    opacity: 1;
}

/* ── Preview area ────────────────────────────── */

.kp-card-preview {
    position: relative;
    width: 100%;
    height: var(--kp-preview-h);
    background: var(--kp-preview-bg);
    overflow: hidden;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kp-card-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .2s ease;
}

.kp-card:hover .kp-card-preview img {
    transform: scale(1.03);
}

.kp-card-icon {
    font-size: 40px;
    line-height: 1;
    user-select: none;
}

/* Type badge on preview */
.kp-card-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .04em;
    padding: 2px 6px;
    border-radius: 20px;
    opacity: .9;
}

/* ── Card footer ─────────────────────────────── */

.kp-card-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-top: var(--kp-border);
    background: var(--kp-bg);
    min-height: 52px;
}

.kp-card-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.kp-card-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--kp-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.kp-card-size {
    font-size: 10px;
    color: var(--kp-text-muted);
}

/* Download button */
.kp-card-dl-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    border-radius: var(--kp-radius);
    border: var(--kp-border-em);
    background: var(--kp-bg);
    color: var(--kp-text);
    cursor: pointer;
    transition: background var(--kp-trans), border-color var(--kp-trans), opacity var(--kp-trans);
    opacity: 0;
}

.kp-card:hover .kp-card-dl-btn {
    opacity: 1;
}

.kp-card-dl-btn:hover {
    background: var(--kp-accent);
    border-color: var(--kp-accent);
    color: var(--kp-bg);
}

/* ── Badges ──────────────────────────────────── */

.kp-badge-pdf  { background: #fee2e2; color: #991b1b; }
.kp-badge-img  { background: rgba(0,0,0,.45); color: #fff; }
.kp-badge-file { background: rgba(0,0,0,.35); color: #fff; }

/* ── Footer ──────────────────────────────────── */

.kp-explorer-footer {
    border-top: var(--kp-border);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--kp-section-bg);
}

.kp-footer-count { font-size: 11px; color: var(--kp-text-muted); }

/* ── Responsive ──────────────────────────────── */

@media (max-width: 600px) {
    .kp-card-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 12px;
        padding: 12px 14px 16px;
    }

    :root { --kp-preview-h: 120px; }

    .kp-card-dl-btn { opacity: 1; }
    .kp-cb-file { opacity: 1; }
    .kp-btn-dl-folder { opacity: 1; }
    .kp-section-header { padding: 12px 14px; }
}

@media (max-width: 400px) {
    .kp-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}