/* Download Center — rich UI */
.download-page {
    --dc-bg: #f0f4fc;
    --dc-surface: #ffffff;
    --dc-text: #0f172a;
    --dc-muted: #64748b;
    --dc-border: rgba(148, 163, 184, 0.35);
    --dc-primary: #3366ff;
    --dc-primary-2: #6366f1;
    --dc-accent: #0ea5e9;
    --dc-success: #059669;
    --dc-danger: #dc2626;
    --dc-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
    --dc-shadow-hover: 0 20px 40px rgba(51, 102, 255, 0.12);
    min-height: 100vh;
    background: var(--dc-bg);
    color: var(--dc-text);
    padding: 0 0 3rem;
}

.dc-hero-wrap {
    position: relative;
    padding: 0.55rem clamp(1rem, 3vw, 2rem);
    background: linear-gradient(135deg, #1e3a8a 0%, #3366ff 45%, #6366f1 100%);
    overflow: hidden;
}

.dc-hero-wrap::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 90% 10%, rgba(255,255,255,0.15) 0%, transparent 55%),
        radial-gradient(ellipse 50% 40% at 10% 90%, rgba(14,165,233,0.2) 0%, transparent 50%);
    pointer-events: none;
}

.dc-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: auto minmax(180px, 1fr) auto;
    gap: 0.65rem 0.85rem;
    align-items: center;
}

@media (max-width: 960px) {
    .dc-hero-inner {
        grid-template-columns: 1fr;
    }

    .dc-hero-search {
        order: 3;
        width: 100%;
    }

    .dc-hero-actions {
        order: 2;
        justify-content: flex-start;
    }
}

.dc-hero-search {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    min-width: 0;
    max-width: 420px;
    width: 100%;
    justify-self: center;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 10px;
    padding: 0.4rem 0.75rem;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.12);
}

.dc-hero-search i {
    color: #64748b;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.dc-hero-search input {
    border: 0;
    outline: 0;
    width: 100%;
    min-width: 0;
    background: transparent;
    font-size: 0.88rem;
    color: var(--dc-text);
}

.dc-hero-search input::placeholder {
    color: #94a3b8;
}

.dc-hero-title {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 0.85rem;
    color: #fff;
    min-width: 0;
}

.dc-hero-title h1 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.dc-hero-title h1 i { font-size: 1.2rem; opacity: 0.9; }

.dc-hero-meta {
    font-size: 0.78rem;
    font-weight: 500;
    color: rgba(255,255,255,0.78);
    white-space: nowrap;
}

.dc-card-badge, .dc-table-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: #fef3c7;
    color: #b45309;
    border-radius: 4px;
    padding: 0.1rem 0.35rem;
    margin-left: 0.35rem;
    vertical-align: middle;
}

.dc-table-badge { margin-left: 0; margin-top: 0.2rem; }

.dc-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.dc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 0.4rem 0.75rem;
    font-weight: 600;
    font-size: 0.82rem;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    text-decoration: none;
}

.dc-btn:hover:not(:disabled) { transform: translateY(-1px); }
.dc-btn:disabled { opacity: 0.55; cursor: not-allowed; }

.dc-btn-primary {
    background: #fff;
    color: #1e40af;
    box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}
.dc-btn-primary:hover:not(:disabled) { box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

.dc-btn-ghost {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.35);
    color: #fff;
    backdrop-filter: blur(8px);
}
.dc-btn-ghost:hover:not(:disabled) { background: rgba(255,255,255,0.2); }

.dc-btn-tab-active {
    background: #fff;
    color: #1e40af;
    box-shadow: 0 4px 14px rgba(0,0,0,0.12);
}

.dc-btn-muted { background: #e2e8f0; color: #475569; }
.dc-btn-block { width: 100%; }

.dc-body .dc-btn-primary {
    background: linear-gradient(135deg, var(--dc-primary), var(--dc-primary-2));
    color: #fff;
    box-shadow: 0 4px 12px rgba(51, 102, 255, 0.3);
}

.dc-body .dc-btn-ghost {
    background: #fff;
    border-color: var(--dc-border);
    color: var(--dc-text);
}

.dc-body {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.75rem clamp(1rem, 3vw, 2rem) 0;
}

.dc-alert {
    border-radius: 14px;
    padding: 0.85rem 1.1rem;
    margin-bottom: 1rem;
    font-size: 0.92rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.dc-alert-info { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.dc-alert-success { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.dc-alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

.dc-toolbar {
    background: var(--dc-surface);
    border: 1px solid var(--dc-border);
    border-radius: 12px;
    padding: 0.55rem 0.75rem;
    margin-bottom: 0.65rem;
    box-shadow: var(--dc-shadow);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.45rem 0.65rem;
}

.dc-toolbar-right {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.65rem;
}

.dc-view-toggle {
    display: inline-flex;
    border: 1px solid var(--dc-border);
    border-radius: 8px;
    overflow: hidden;
    background: #f8fafc;
}

.dc-view-btn {
    border: 0;
    background: transparent;
    padding: 0.32rem 0.6rem;
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--dc-muted);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.dc-view-btn.active {
    background: #fff;
    color: var(--dc-primary);
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

.dc-btn-sm {
    padding: 0.32rem 0.65rem;
    font-size: 0.74rem;
}

.dc-search-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #f8fafc;
    border: 1px solid var(--dc-border);
    border-radius: 10px;
    padding: 0.45rem 0.75rem;
}

.dc-search-wrap i { color: var(--dc-muted); font-size: 1.2rem; }

.dc-search-wrap input {
    border: 0;
    outline: 0;
    width: 100%;
    background: transparent;
    font-size: 1rem;
}

.dc-category-pills { display: flex; flex-wrap: wrap; gap: 0.45rem; }

.dc-pill {
    border: 1px solid var(--dc-border);
    background: #f8fafc;
    color: var(--dc-muted);
    border-radius: 999px;
    padding: 0.28rem 0.7rem;
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.dc-pill:hover { border-color: var(--dc-primary); color: var(--dc-primary); }
.dc-pill.active {
    background: linear-gradient(135deg, var(--dc-primary), var(--dc-primary-2));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 12px rgba(51, 102, 255, 0.35);
}

.dc-category-group {
    margin-bottom: 0.35rem;
}

.dc-category-group.is-collapsed .dc-section-title {
    margin-bottom: 0.35rem;
}

.dc-section-title {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    width: 100%;
    margin: 0.65rem 0 0.45rem;
    padding: 0.25rem 0.1rem;
    border: 0;
    background: transparent;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--dc-muted);
    cursor: pointer;
    text-align: left;
    transition: color 0.15s ease;
}

.dc-section-title:hover {
    color: var(--dc-primary);
}

.dc-section-chevron {
    font-size: 0.95rem;
    color: var(--dc-primary);
    flex-shrink: 0;
}

.dc-section-count {
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0;
}

.dc-section-line {
    flex: 1;
    height: 1px;
    background: var(--dc-border);
}

.dc-section-title::after {
    display: none;
}

.dc-expand-actions {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
}

.dc-link-btn {
    border: 0;
    background: transparent;
    padding: 0;
    color: var(--dc-primary);
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
}

.dc-link-btn:hover {
    text-decoration: underline;
}

.dc-expand-sep {
    color: #cbd5e1;
}

.dc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 0.55rem;
}

.dc-card {
    background: var(--dc-surface);
    border: 1px solid var(--dc-border);
    border-radius: 12px;
    padding: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--dc-shadow);
    transition: box-shadow 0.15s ease;
}

.dc-card:hover {
    box-shadow: var(--dc-shadow-hover);
}

.dc-card-top {
    padding: 0.55rem 0.65rem 0.45rem;
    display: flex;
    gap: 0.55rem;
    align-items: flex-start;
}

.dc-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    display: grid;
    place-items: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    color: var(--dc-primary);
}

.dc-card-icon.zip { background: linear-gradient(135deg, #f1f5f9, #e2e8f0); color: #475569; }
.dc-card-icon.image { background: linear-gradient(135deg, #ecfeff, #a5f3fc); color: #0891b2; }
.dc-card-icon.doc { background: linear-gradient(135deg, #eff6ff, #93c5fd); color: #2563eb; }
.dc-card-icon.exe { background: linear-gradient(135deg, #f0fdf4, #86efac); color: #15803d; }

.dc-card-meta-top { flex: 1; min-width: 0; }

.dc-card-category {
    display: inline-block;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--dc-primary);
    background: #eff6ff;
    border-radius: 4px;
    padding: 0.1rem 0.35rem;
    margin-bottom: 0.2rem;
}

.dc-card h3 {
    margin: 0;
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1.3;
    word-break: break-word;
}

.dc-card-desc {
    margin: 0.15rem 0 0;
    color: var(--dc-muted);
    font-size: 0.72rem;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.dc-card-body {
    padding: 0 0.65rem 0.45rem;
    flex: 1;
}

.dc-card p {
    margin: 0;
    color: var(--dc-muted);
    font-size: 0.78rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.dc-card-footer {
    padding: 0.45rem 0.65rem 0.55rem;
    border-top: 1px solid #f1f5f9;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.dc-card-stats {
    display: flex;
    gap: 0.5rem;
    font-size: 0.68rem;
    color: var(--dc-muted);
}

.dc-card-stats span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.dc-card-actions { flex-shrink: 0; }

/* List view */
.dc-list-wrap {
    border: 1px solid var(--dc-border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--dc-surface);
}

.dc-list-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.78rem;
}

.dc-list-table thead th {
    padding: 0.4rem 0.65rem;
    text-align: left;
    font-size: 0.64rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--dc-muted);
    background: #f8fafc;
    border-bottom: 1px solid var(--dc-border);
}

.dc-list-table tbody td {
    padding: 0.4rem 0.65rem;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
}

.dc-list-table tbody tr:last-child td { border-bottom: none; }
.dc-list-table tbody tr:hover { background: #fafbff; }

.dc-list-file {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    min-width: 0;
}

.dc-list-icon {
    width: 30px;
    height: 30px;
    border-radius: 7px;
    display: grid;
    place-items: center;
    font-size: 0.95rem;
    flex-shrink: 0;
    background: #eff6ff;
    color: var(--dc-primary);
}

.dc-list-file strong {
    display: block;
    font-size: 0.8rem;
    line-height: 1.25;
    word-break: break-word;
}

.dc-list-desc {
    display: block;
    font-size: 0.68rem;
    color: var(--dc-muted);
    margin-top: 0.1rem;
    line-height: 1.3;
}

.dc-list-meta {
    font-size: 0.72rem;
    color: var(--dc-muted);
    white-space: nowrap;
}

.dc-list-action {
    text-align: right;
    white-space: nowrap;
}

.dc-empty {
    text-align: center;
    padding: 4rem 1.5rem;
    background: var(--dc-surface);
    border: 1px dashed var(--dc-border);
    border-radius: 24px;
    color: var(--dc-muted);
}

.dc-empty .typcn {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 0.75rem;
    color: #cbd5e1;
}

.dc-empty h3 { margin: 0 0 0.35rem; color: var(--dc-text); font-size: 1.2rem; }

.dc-manage {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: 1fr;
}

@media (min-width: 1100px) {
    .dc-manage { grid-template-columns: 1fr 1.15fr; }
}

.dc-upload-panel, .dc-table-panel {
    background: var(--dc-surface);
    border: 1px solid var(--dc-border);
    border-radius: 20px;
    padding: 1.25rem;
    box-shadow: var(--dc-shadow);
}

.dc-upload-panel h2, .dc-table-panel h2 {
    margin: 0 0 0.25rem;
    font-size: 1.15rem;
    font-weight: 700;
}

.dc-muted { color: var(--dc-muted); font-size: 0.88rem; }

.dc-form-grid {
    display: grid;
    gap: 0.85rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 1rem 0;
}

.dc-span-2 { grid-column: span 2; }
.dc-form-grid label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 0.3rem; color: var(--dc-text); }

.dc-input {
    width: 100%;
    border: 1px solid var(--dc-border);
    border-radius: 12px;
    padding: 0.6rem 0.8rem;
    font-size: 0.92rem;
    background: #f8fafc;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.dc-input:focus {
    outline: none;
    border-color: var(--dc-primary);
    box-shadow: 0 0 0 3px rgba(51, 102, 255, 0.15);
    background: #fff;
}

.dc-dropzone {
    border: 2px dashed #94a3b8;
    border-radius: 18px;
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    transition: border-color 0.15s, background 0.15s;
}

.dc-dropzone:hover {
    border-color: var(--dc-primary);
    background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
}

.dc-dropzone .typcn { font-size: 2.5rem; color: var(--dc-primary); display: block; margin-bottom: 0.5rem; }
.dc-dropzone strong { display: block; font-size: 1rem; }
.dc-dropzone span { display: block; color: var(--dc-muted); font-size: 0.85rem; margin-top: 0.25rem; }

.dc-hidden-input { display: none; }

.dc-file-list {
    list-style: none;
    margin: 0.85rem 0 0;
    padding: 0;
    border: 1px solid var(--dc-border);
    border-radius: 14px;
    overflow: hidden;
}

.dc-file-list li {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.65rem 0.9rem;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.88rem;
}

.dc-file-list li:last-child { border-bottom: 0; }

.dc-upload-actions { display: flex; gap: 0.5rem; margin-top: 0.85rem; flex-wrap: wrap; }

.dc-table-wrap { overflow: auto; margin-top: 0.85rem; border-radius: 12px; border: 1px solid var(--dc-border); }

.dc-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.dc-table th, .dc-table td { text-align: left; padding: 0.75rem 0.85rem; border-bottom: 1px solid #f1f5f9; vertical-align: top; }
.dc-table th { background: #f8fafc; color: var(--dc-muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; }
.dc-table tr:hover td { background: #fafbfc; }

.dc-switch { display: inline-flex; align-items: center; gap: 0.4rem; }
.dc-row-actions { white-space: nowrap; }
.dc-link { background: none; border: 0; color: var(--dc-primary); cursor: pointer; padding: 0; margin-right: 0.65rem; font-weight: 600; }
.dc-link.dc-danger { color: var(--dc-danger); }

.dc-spinner {
    width: 1.4rem;
    height: 1.4rem;
    border: 2px solid #cbd5e1;
    border-top-color: var(--dc-primary);
    border-radius: 50%;
    display: inline-block;
    animation: dc-spin 0.8s linear infinite;
}

.dc-spinner-sm { width: 1rem; height: 1rem; }

@keyframes dc-spin { to { transform: rotate(360deg); } }

.dc-loading-skeleton {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.1rem;
}

.dc-skeleton-card {
    height: 110px;
    border-radius: 12px;
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: dc-shimmer 1.2s infinite;
}

@keyframes dc-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}