:root {
    --bg:         #0f1117;
    --card:       #1a1d2e;
    --card-hover: #1f2340;
    --accent:     #6c63ff;
    --accent-dim: #4f46e5;
    --success:    #00d4aa;
    --error:      #ff4757;
    --warning:    #ffa502;
    --text:       #ffffff;
    --muted:      #8b8fa8;
    --border:     #2a2d3e;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    min-height: 100vh;
}

.nav {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.nav-logo { font-size: 1.4rem; font-weight: 700; color: var(--accent); text-decoration: none; }
.nav-tagline { color: var(--muted); font-size: 0.85rem; }

.container { max-width: 900px; margin: 0 auto; padding: 2rem 1rem; }

.input-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.input-group { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; }
.input-group:last-child { margin-bottom: 0; }

.tc-input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    padding: 0.65rem 1rem;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}
.tc-input:focus { border-color: var(--accent); }
.tc-input::placeholder { color: var(--muted); }
.tc-input:disabled { opacity: 0.4; cursor: not-allowed; }

.btn {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.65rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s;
    white-space: nowrap;
}
.btn:hover { background: var(--accent-dim); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.file-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg);
    border: 1px dashed var(--border);
    border-radius: 8px;
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
    color: var(--muted);
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}
.file-label:hover { border-color: var(--accent); color: var(--accent); }
input[type="file"] { display: none; }

.banner {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.banner-warn  { background: rgba(255,165,2,0.12);  border: 1px solid rgba(255,165,2,0.3);  color: var(--warning); }
.banner-error { background: rgba(255,71,87,0.12);  border: 1px solid rgba(255,71,87,0.3);  color: var(--error); }
.banner-info  { background: rgba(108,99,255,0.12); border: 1px solid rgba(108,99,255,0.3); color: var(--accent); }

.section-header {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.75rem;
}

.download-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    transition: border-color 0.2s;
}
.download-card.status-error { border-color: var(--error); }
.download-card.status-done  { border-color: var(--success); }

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    gap: 0.5rem;
}
.card-name { font-size: 0.95rem; font-weight: 600; word-break: break-word; flex: 1; }
.btn-remove {
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    transition: color 0.2s;
    flex-shrink: 0;
}
.btn-remove:hover { color: var(--error); }

.progress-wrap {
    background: var(--bg);
    border-radius: 999px;
    height: 6px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}
.progress-bar {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent), var(--success));
    transition: width 0.5s ease;
}

.card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--muted);
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
}
.badge-warn    { background: rgba(255,165,2,0.15);  color: var(--warning); }
.badge-error   { background: rgba(255,71,87,0.15);  color: var(--error); }
.badge-success { background: rgba(0,212,170,0.15);  color: var(--success); }
.badge-info    { background: rgba(108,99,255,0.15); color: var(--accent); }

.file-list { border-top: 1px solid var(--border); padding-top: 0.75rem; }
.file-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.3rem 0;
    gap: 0.5rem;
    font-size: 0.85rem;
}
.file-name { color: var(--muted); word-break: break-all; flex: 1; }
.btn-save {
    background: var(--success);
    color: #000;
    font-weight: 700;
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}
.btn-save:hover { opacity: 0.85; }

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 0.75rem;
}
.result-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: border-color 0.2s;
}
.result-card:hover { border-color: var(--accent); }
.result-name {
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.result-meta {
    font-size: 0.78rem;
    color: var(--muted);
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}
.seed-green  { color: var(--success); font-weight: 700; }
.seed-yellow { color: var(--warning); font-weight: 700; }
.seed-red    { color: var(--error);   font-weight: 700; }

.spinner {
    width: 18px; height: 18px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

.footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 1rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
    line-height: 1.6;
}
.footer a { color: var(--accent); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

@media (max-width: 600px) {
    .input-group { flex-direction: column; }
    .btn { width: 100%; }
    .results-grid { grid-template-columns: 1fr; }
    .card-meta { gap: 0.5rem; }
}