/* ===== Obsidian Neon — Design System by Stitch ===== */
/* Creative North Star: "The Neon Observatory" */

[data-theme="dark"] {
    --bg-body: #0c0c1d;
    --bg-panel: rgba(18, 18, 35, 0.65);
    --bg-card: rgba(24, 24, 43, 0.6);
    --bg-card-hover: rgba(36, 35, 59, 0.85);
    --border-glass: rgba(71, 70, 89, 0.15);
    --text-primary: #e6e3fb;
    --text-secondary: #aba9bf;
    --accent: #bd9dff;
    --accent-raw: 189, 157, 255;
    --accent-glow: rgba(124, 58, 237, 0.3);
    --accent-2: #c38bf5;
    --accent-dim: #8a4cfc;
    --green: #34d399;
    --red: #ff6e84;
    --yellow: #fbbf24;
    --shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 15px rgba(124, 58, 237, 0.1);
    --code-bg: #000;
    --surface-low: #121223;
    --surface-container: #18182b;
    --surface-high: #1d1d33;
    --surface-highest: #24233b;
    --surface-bright: #2a2a43;
    --outline: #757388;
    --tertiary: #ff97b2;
}
[data-theme="light"] {
    --bg-body: #f0f2f5;
    --bg-panel: rgba(255, 255, 255, 0.75);
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: #fff;
    --border-glass: rgba(0, 0, 0, 0.06);
    --text-primary: #1a1a2e;
    --text-secondary: #64748b;
    --accent: #7c3aed;
    --accent-raw: 124, 58, 237;
    --accent-glow: rgba(124, 58, 237, 0.15);
    --accent-2: #a855f7;
    --accent-dim: #6d28d9;
    --green: #059669;
    --red: #dc2626;
    --yellow: #d97706;
    --shadow: 0 8px 32px rgba(0,0,0,0.08);
    --code-bg: #1e293b;
    --surface-low: #e8eaed;
    --surface-container: #eef0f3;
    --surface-high: #f5f6f8;
    --surface-highest: #fafafb;
    --surface-bright: #ffffff;
    --outline: #94a3b8;
    --tertiary: #ec4899;
}

:root {
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    transition: background 0.4s, color 0.4s;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
body::-webkit-scrollbar { display: none; }

/* ===== Background Atmosphere ===== */
.blob { position:fixed; border-radius:50%; filter:blur(140px); z-index:-1; animation:float 25s infinite alternate; pointer-events:none; }
.blob-1 { top:-120px; left:-120px; width:550px; height:550px; background:radial-gradient(circle, var(--accent-2), transparent 70%); opacity:0.15; }
.blob-2 { bottom:-180px; right:-120px; width:650px; height:650px; background:radial-gradient(circle, var(--accent), transparent 60%); opacity:0.10; animation-delay:-6s; }
@keyframes float { 0%{transform:translate(0,0) scale(1) rotate(0deg)} 100%{transform:translate(60px,40px) scale(1.1) rotate(5deg)} }

/* ===== Glass (No-border philosophy; use tonal shifts) ===== */
.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow);
}

/* ===== Layout ===== */
.app-container { display:grid; grid-template-columns:280px 1fr; gap:28px; max-width:1480px; margin:0 auto; padding:28px; min-height:100vh; }

/* ===== Sidebar ===== */
.sidebar {
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    height: calc(100vh - 56px);
    position: sticky;
    top: 28px;
    overflow-y: auto;
    scrollbar-width: none;
    background: var(--surface-low);
    border: none;
}
.sidebar::-webkit-scrollbar { display: none; }

.brand { display:flex; align-items:center; gap:12px; }
.brand-icon { font-size:28px; color:var(--accent); filter: drop-shadow(0 0 8px rgba(var(--accent-raw), 0.5)); }
.brand h2 { font-weight:800; font-size:1.15rem; letter-spacing: -0.02em; background:linear-gradient(135deg, var(--accent), var(--accent-2)); background-clip:text; -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.github-link { margin-left:auto; color:var(--text-secondary); font-size:24px; text-decoration:none; transition:var(--transition); }
.github-link:hover { color:var(--accent); transform:scale(1.15); filter: drop-shadow(0 0 6px rgba(var(--accent-raw), 0.5)); }
.description { color:var(--text-secondary); font-size:0.85rem; line-height: 1.5; }

/* Theme Toggle */
.theme-toggle-btn {
    display:flex; align-items:center; gap:10px;
    padding:12px 18px; border-radius:var(--radius-sm);
    background: var(--surface-container);
    border: none;
    color:var(--text-primary); cursor:pointer; font-family:inherit;
    font-weight:600; font-size:0.9rem; transition:var(--transition);
}
.theme-toggle-btn:hover { background: var(--surface-high); box-shadow: 0 0 20px rgba(var(--accent-raw), 0.1); }

/* Search */
.search-box-form { display:flex; gap:8px; }
.search-box { position:relative; flex-grow:1; display:flex; align-items:center; }
.search-box i { position:absolute; left:14px; color:var(--text-secondary); font-size: 1.1rem; transition: var(--transition); }
.search-box input {
    width:100%; padding:13px 13px 13px 42px; border-radius: 50px;
    background: var(--surface-highest);
    border: none;
    color:var(--text-primary); font-family:inherit; font-size:0.9rem; transition:var(--transition);
}
.search-box input:focus { outline:none; background: var(--surface-bright); box-shadow:0 0 0 3px rgba(var(--accent-raw), 0.25); }
.search-box input:focus + i, .search-box input:focus ~ i { color: var(--accent); }
.btn-fetch { white-space:nowrap; border-radius: 50px !important; }

/* Autocomplete */
.search-autocomplete {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--surface-highest); border-radius: var(--radius-md);
    max-height: 200px; overflow-y: auto; z-index: 100;
    box-shadow: 0 12px 30px rgba(0,0,0,0.4);
    margin-top: 4px;
}
.search-autocomplete div {
    padding: 10px 16px; cursor: pointer; transition: var(--transition);
    font-size: 0.9rem;
}
.search-autocomplete div:hover { background: rgba(var(--accent-raw), 0.1); color: var(--accent); }

/* Categories */
.categories { display:flex; flex-direction:column; gap:4px; }
.category-btn {
    background:transparent; border:none; color:var(--text-secondary);
    text-align:left; padding:11px 16px; border-radius:var(--radius-sm);
    cursor:pointer; font-family:inherit; font-size:0.9rem; font-weight:500;
    transition:var(--transition); display:flex; align-items:center; gap:10px;
}
.category-btn i { font-size: 1.15rem; }
.category-btn:hover { background: var(--surface-container); color:var(--text-primary); }
.category-btn.active {
    background: linear-gradient(90deg, rgba(var(--accent-raw), 0.15), transparent);
    color:var(--accent); border-left:3px solid var(--accent);
    font-weight: 600;
}

/* Package Counter */
.pkg-counter { color:var(--text-secondary); font-size:0.85rem; display:flex; align-items:center; gap:8px; margin-top:auto; padding-top:14px; border-top:1px solid var(--border-glass); }
#pkg-count-value { font-weight:700; color:var(--accent); font-size:1.15rem; transition:var(--transition); filter: drop-shadow(0 0 4px rgba(var(--accent-raw), 0.4)); }

/* ===== Main ===== */
.main-content { display:flex; flex-direction:column; gap:24px; min-width:0; }
.header {
    border-radius:var(--radius-lg); padding:22px 30px;
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px;
    background: var(--surface-low);
    border: none;
}
.header-info h1 { font-size:1.5rem; font-weight:800; letter-spacing: -0.02em; }
.header-actions { display:flex; gap:10px; flex-wrap:wrap; }

/* Action Buttons */
.action-btn {
    padding:10px 18px; border-radius:50px; font-family:inherit;
    font-weight:600; font-size:0.85rem; cursor:pointer; transition:var(--transition);
    border: none;
    background: var(--surface-container);
    color:var(--text-primary); display:flex; align-items:center; gap:8px;
}
.action-btn i { font-size: 1.1rem; }
.action-btn:hover { background: var(--surface-high); box-shadow: 0 0 15px rgba(var(--accent-raw), 0.1); }
.action-btn:disabled { opacity:0.4; cursor:not-allowed; }
.action-btn.primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dim));
    color:#fff; border:none;
}
.action-btn.primary:hover { box-shadow:0 4px 25px rgba(var(--accent-raw), 0.4); filter:brightness(1.1); }
.badge { background:rgba(255,255,255,0.2); padding:2px 8px; border-radius:20px; font-size:0.8rem; font-weight:700; }

/* ===== Grid ===== */
.grid-container { display:grid; grid-template-columns:repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap:22px; padding:4px; padding-bottom:30px; }
.grid-container::-webkit-scrollbar { display:none; }

/* ===== Package Card — Glassmorphic ===== */
.package-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-glass);
    transition: var(--transition);
    display: flex; flex-direction: column;
    min-height: 380px; position: relative; overflow: hidden;
}
.package-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--tertiary));
    opacity: 0; transition: var(--transition);
}
.package-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3), 0 0 20px rgba(var(--accent-raw), 0.08);
    background: var(--bg-card-hover);
}
.package-card:hover::before { opacity: 1; }
.package-card.selected {
    border-color: rgba(var(--accent-raw), 0.3);
    background: linear-gradient(to bottom right, var(--bg-card), rgba(var(--accent-raw), 0.08));
}
.package-card.selected::before { opacity: 1; }
.package-card .vuln-flag {
    position:absolute; top:14px; right:14px;
    background: linear-gradient(135deg, #dc2626, var(--red));
    color:#fff; font-size:0.7rem; font-weight:700;
    padding:4px 10px; border-radius:50px; display:flex; align-items:center; gap:4px;
    box-shadow: 0 4px 12px rgba(255, 110, 132, 0.3);
}

.card-header { display:flex; justify-content:space-between; align-items:flex-start; gap:10px; margin-bottom:12px; }
.card-title { font-size:1.15rem; font-weight:700; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; letter-spacing: -0.01em; }
.version-select {
    background: var(--surface-container); color:var(--accent);
    border: none; padding:6px 10px; border-radius:50px;
    font-family:'Fira Code', monospace; font-size:0.8rem;
    cursor:pointer; transition:var(--transition);
}
.version-select:hover { background: var(--surface-high); }
.version-select option { background:var(--bg-body); }

.card-desc { color:var(--text-secondary); font-size:0.88rem; line-height:1.6; display:-webkit-box; -webkit-line-clamp:3; line-clamp:3; -webkit-box-orient:vertical; overflow:hidden; margin-bottom:16px; flex-grow:1; }

.card-meta {
    display:flex; flex-wrap:wrap; gap:10px; font-size:0.78rem;
    color:var(--text-secondary); background: var(--surface-low);
    padding:10px 12px; border-radius:var(--radius-sm); margin-bottom:16px;
    border: none;
}
.card-meta span { display:flex; align-items:center; gap:5px; }
.card-meta span i { font-size: 1rem; }
.card-meta a { color:var(--accent); text-decoration:none; margin-left:auto; display:flex; align-items:center; gap:4px; }
.card-meta a:hover { text-decoration:underline; }

.card-actions { display:grid; grid-template-columns:1fr 1fr 1fr 1fr; gap:6px; margin-top:auto; }
.card-btn {
    padding:9px 6px; border-radius:50px; font-family:inherit;
    font-weight:600; font-size:0.78rem; cursor:pointer; transition:var(--transition);
    border: none; display:flex; align-items:center; justify-content:center; gap:5px;
    text-decoration:none; white-space:nowrap;
}
.card-btn i { font-size: 1rem; }
.card-btn.dl { background: rgba(var(--accent-raw), 0.08); color:var(--accent); }
.card-btn.dl:hover { background: linear-gradient(135deg, var(--accent), var(--accent-dim)); color:#fff; box-shadow: 0 4px 15px rgba(var(--accent-raw), 0.3); }
.card-btn.pin { background: rgba(195, 139, 245, 0.08); color:var(--accent-2); }
.card-btn.pin:hover, .package-card.selected .card-btn.pin { background: linear-gradient(135deg, var(--accent-2), #9333ea); color:#fff; }
.card-btn.dep { background: rgba(52,211,153,0.08); color:var(--green); }
.card-btn.dep:hover { background: var(--green); color:#fff; }

/* ===== Modals ===== */
.modal-overlay {
    position:fixed; inset:0; background:rgba(0,0,0,0.6);
    backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
    display:flex; justify-content:center; align-items:center; z-index:200;
    opacity:0; pointer-events:none; transition:var(--transition);
}
.modal-overlay.active { opacity:1; pointer-events:all; }
.modal-content {
    width:92%; max-width:750px; max-height:90vh;
    border-radius:var(--radius-lg); display:flex; flex-direction:column;
    transform:translateY(20px) scale(0.96); transition:var(--transition);
    overflow:hidden; background: var(--surface-highest);
    box-shadow: 0 30px 60px rgba(0,0,0,0.5), 0 0 25px rgba(var(--accent-raw), 0.08);
    border: none;
}
.modal-overlay.active .modal-content { transform:translateY(0) scale(1); }
.modal-header { padding:22px 26px; border-bottom:1px solid var(--border-glass); display:flex; justify-content:space-between; align-items:center; }
.modal-header h2 { font-size:1.2rem; font-weight: 700; letter-spacing: -0.01em; }
.close-btn { background:transparent; border:none; color:var(--text-secondary); font-size:22px; cursor:pointer; transition:var(--transition); }
.close-btn:hover { color:var(--accent); transform:rotate(90deg); }
.modal-body { padding:24px; overflow-y:auto; display:flex; flex-direction:column; gap:24px; scrollbar-width: none; }
.modal-body::-webkit-scrollbar { display: none; }
.modal-footer { padding:16px 24px; border-top:1px solid var(--border-glass); display:flex; flex-wrap:wrap; justify-content:flex-end; gap:10px; }

/* Code Box */
.code-box { background:var(--code-bg); border:none; border-radius:var(--radius-md); padding:16px 20px; display:flex; justify-content:space-between; align-items:center; margin-top:10px; }
.code-box code { font-family:'Fira Code', monospace; color:var(--accent); font-size:0.88rem; word-break:break-all; }
.copy-btn { background:transparent; border:none; color:var(--text-secondary); font-size:18px; cursor:pointer; transition:var(--transition); }
.copy-btn:hover { color:var(--accent); filter: drop-shadow(0 0 6px rgba(var(--accent-raw), 0.4)); }

/* Verification */
.verification-list { display:flex; flex-direction:column; gap:10px; }
.verify-item { background: var(--surface-container); border:none; border-radius:var(--radius-md); padding:16px; }
.verify-header { display:flex; justify-content:space-between; margin-bottom:8px; align-items:center; }
.verify-title { font-weight:600; color:var(--accent); }
.hash-value { font-family:'Fira Code', monospace; font-size:0.75rem; color:var(--text-primary); background:rgba(0,0,0,0.3); padding:8px; border-radius:6px; word-break:break-all; margin-top:4px; }

/* Buttons */
.btn { padding:10px 20px; border-radius:50px; font-family:inherit; font-weight:600; font-size:0.85rem; cursor:pointer; transition:var(--transition); border:none; display:flex; align-items:center; gap:7px; }
.btn i { font-size: 1rem; }
.btn-accent { background: linear-gradient(135deg, var(--accent), var(--accent-dim)); color:#fff; }
.btn-accent:hover { box-shadow:0 4px 20px rgba(var(--accent-raw), 0.35); filter:brightness(1.1); }
.btn-ghost { background:transparent; border:1px solid var(--outline); color:var(--text-primary); }
.btn-ghost:hover { background: var(--surface-container); border-color: var(--accent); }

/* Comparison Table */
.compare-table { width:100%; border-collapse:collapse; }
.compare-table th, .compare-table td { padding:14px 18px; text-align:left; border-bottom:1px solid var(--border-glass); font-size:0.9rem; }
.compare-table th { color:var(--text-secondary); font-weight:500; text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.05em; }
.compare-table td:nth-child(2), .compare-table td:nth-child(3) { font-weight:600; }

/* Dependency tree */
.dep-tree { list-style:none; padding-left:20px; }
.dep-tree li { padding:8px 0; color:var(--text-primary); font-size:0.92rem; display:flex; align-items:center; gap:10px; }
.dep-tree li::before { content:''; width:8px; height:8px; border-radius:50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); flex-shrink:0; box-shadow: 0 0 6px rgba(var(--accent-raw), 0.4); }

/* Venv Code Blocks */
.venv-block { margin-bottom:16px; }
.venv-block h4 { margin-bottom:8px; color:var(--text-secondary); font-size:0.85rem; text-transform: uppercase; letter-spacing: 0.04em; }

/* ===== Toasts ===== */
#toast-container { position:fixed; top:24px; right:24px; z-index:999; display:flex; flex-direction:column; gap:10px; pointer-events:none; }
.toast {
    pointer-events:all; padding:14px 22px; border-radius:50px;
    color:#fff; font-family:'Inter', sans-serif; font-weight:600; font-size:0.9rem;
    display:flex; align-items:center; gap:10px;
    box-shadow:0 8px 30px rgba(0,0,0,0.3); animation:toastIn 0.4s ease forwards;
    min-width:260px; border: none;
}
.toast.success { background:linear-gradient(135deg, #059669, #34d399); }
.toast.info { background:linear-gradient(135deg, var(--accent-dim), var(--accent)); }
.toast.warn { background:linear-gradient(135deg, #d97706, #fbbf24); color:#1a1a2e; }
.toast.error { background:linear-gradient(135deg, #dc2626, var(--red)); }
@keyframes toastIn { from { opacity:0; transform:translateX(60px); } to { opacity:1; transform:translateX(0); } }
@keyframes toastOut { from { opacity:1; transform:translateX(0); } to { opacity:0; transform:translateX(60px); } }

/* Loader */
.loading-state { grid-column:1/-1; display:flex; flex-direction:column; align-items:center; justify-content:center; height:300px; color:var(--text-secondary); gap:14px; }
.spinner { width:36px; height:36px; border:3px solid rgba(var(--accent-raw), 0.15); border-top-color:var(--accent); border-radius:50%; animation:spin 0.8s infinite linear; }
@keyframes spin { 100%{transform:rotate(360deg)} }
.empty-state-text { color:var(--text-secondary); text-align:center; padding:20px; }

/* ===== Card Entrance Animation ===== */
@keyframes cardSlideIn {
    from { opacity: 0; transform: translateY(24px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.package-card.animate-in {
    animation: cardSlideIn 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* ===== Search Autocomplete Highlight ===== */
.search-autocomplete .ac-item {
    padding: 11px 16px; cursor: pointer; transition: var(--transition);
    font-size: 0.9rem; display: flex; align-items: center; gap: 10px;
    border-bottom: 1px solid var(--border-glass);
}
.search-autocomplete .ac-item:last-child { border-bottom: none; }
.search-autocomplete .ac-item:hover { background: rgba(var(--accent-raw), 0.1); }
.search-autocomplete .ac-item .ac-name { font-weight: 600; }
.search-autocomplete .ac-item .ac-name .ac-match {
    color: var(--accent); background: rgba(var(--accent-raw), 0.12);
    padding: 0 2px; border-radius: 3px;
}
.search-autocomplete .ac-item .ac-ver {
    color: var(--text-secondary); font-size: 0.78rem; font-family: 'Fira Code', monospace;
}
.search-autocomplete .ac-item .ac-cat {
    margin-left: auto; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.04em;
    color: var(--text-secondary); opacity: 0.7;
}
.search-autocomplete .ac-empty {
    padding: 14px 16px; color: var(--text-secondary); font-style: italic; font-size: 0.85rem;
    display: flex; align-items: center; gap: 8px;
}

/* ===== Empty State Illustration ===== */
.empty-state {
    grid-column: 1/-1; display: flex; flex-direction: column; align-items: center;
    justify-content: center; padding: 60px 20px; text-align: center; gap: 18px;
}
.empty-state-icon {
    font-size: 4rem; color: var(--accent); opacity: 0.3;
    filter: drop-shadow(0 0 20px rgba(var(--accent-raw), 0.2));
    animation: emptyPulse 3s ease-in-out infinite;
}
@keyframes emptyPulse {
    0%, 100% { opacity: 0.25; transform: scale(1); }
    50% { opacity: 0.45; transform: scale(1.05); }
}
.empty-state h3 {
    font-size: 1.3rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.01em;
}
.empty-state p {
    font-size: 0.9rem; color: var(--text-secondary); max-width: 360px; line-height: 1.6;
}

/* ===== Stats Footer ===== */
.app-footer {
    grid-column: 1 / -1; text-align: center; padding: 24px 20px 12px;
    color: var(--text-secondary); font-size: 0.8rem; letter-spacing: 0.02em;
    border-top: 1px solid var(--border-glass); margin-top: 20px;
}
.app-footer .footer-inner {
    display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap;
}
.app-footer .footer-dot { opacity: 0.3; }
.app-footer a {
    color: var(--accent); text-decoration: none; transition: var(--transition);
}
.app-footer a:hover { text-decoration: underline; filter: brightness(1.2); }
.app-footer .footer-heart { color: var(--tertiary); }

/* ===== Responsive ===== */
@media (max-width:1024px) {
    .app-container { grid-template-columns:1fr; height:auto; padding:16px; }
    .sidebar { height:auto; position:relative; top:0; }
}
@media (max-width:768px) {
    .header { flex-direction:column; align-items:stretch; }
    .header-actions { justify-content:flex-start; }
    .package-card { min-height:auto; }
    .card-actions { grid-template-columns:1fr 1fr; }
    .card-actions .dep { grid-column:1/-1; }
}
@media (max-width:500px) {
    .app-container { padding:10px; gap:12px; }
    .modal-content { width:100%; max-height:100vh; border-radius:0; }
    .modal-footer { flex-direction:column; }
    .modal-footer .btn { width:100%; justify-content:center; }
    .header-actions { flex-direction:column; }
    .action-btn { width:100%; justify-content:center; }
    .search-box-form { flex-direction:column; }
}