/* =========================================
   DepViz – CSS
   ========================================= */

/* ---------- Reset & Variables ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:        #0d1117;
  --bg-card:   #161b22;
  --bg-card2:  #1c2333;
  --bg-hover:  #21262d;
  --border:    #30363d;
  --text:      #e6edf3;
  --text-dim:  #8b949e;
  --primary:   #58a6ff;
  --primary-d: #1f6feb;
  --green:     #3fb950;
  --yellow:    #d29922;
  --orange:    #db6d28;
  --red:       #f85149;
  --purple:    #bc8cff;
  --sidebar-w: 240px;
  --sidebar-w-collapsed: 64px;
  --topbar-h:  56px;
  --radius:    12px;
  --radius-sm: 8px;
  --shadow:    0 4px 24px rgba(0,0,0,.35);
  --transition: .25s ease;
}

/* Light theme */
body.light{
  --bg:        #f0f2f5;
  --bg-card:   #ffffff;
  --bg-card2:  #f8f9fc;
  --bg-hover:  #eaecf0;
  --border:    #d0d7de;
  --text:      #1f2328;
  --text-dim:  #656d76;
  --shadow:    0 4px 20px rgba(0,0,0,.08);
}

html{font-size:15px;scroll-behavior:smooth}
body{
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:var(--text-dim)}

/* ---------- Sidebar ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--bg-card);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  z-index:100;
  transition:width var(--transition);
}
.sidebar.collapsed{width:var(--sidebar-w-collapsed)}

.sidebar-brand{
  display:flex;align-items:center;gap:12px;
  padding:18px 20px;font-size:1.35rem;font-weight:700;
  color:var(--primary);
  white-space:nowrap;overflow:hidden;
}
.sidebar-brand i{font-size:1.5rem;min-width:24px;text-align:center}

.sidebar-nav{
  list-style:none;flex:1;padding:8px;
  display:flex;flex-direction:column;gap:2px;
}
.nav-item a{
  display:flex;align-items:center;gap:14px;
  padding:11px 14px;border-radius:var(--radius-sm);
  color:var(--text-dim);font-weight:500;
  white-space:nowrap;overflow:hidden;
  transition:background var(--transition),color var(--transition);
}
.nav-item a i{min-width:20px;text-align:center;font-size:1.05rem}
.nav-item a:hover{background:var(--bg-hover);color:var(--text);text-decoration:none}
.nav-item.active a{background:var(--primary-d);color:#fff}

.sidebar-footer{
  padding:12px;border-top:1px solid var(--border);
  display:flex;justify-content:flex-end;
}
.sidebar-footer button{
  background:none;border:none;color:var(--text-dim);
  cursor:pointer;font-size:1.1rem;padding:6px;
  border-radius:6px;transition:background var(--transition);
}
.sidebar-footer button:hover{background:var(--bg-hover);color:var(--text)}
.sidebar.collapsed .sidebar-footer button i{transform:rotate(180deg)}
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .sidebar-brand span{display:none}

/* ---------- Main ---------- */
#main{
  margin-left:var(--sidebar-w);
  flex:1;display:flex;flex-direction:column;
  transition:margin-left var(--transition);
  min-height:100vh;
}
.sidebar.collapsed ~ #main{margin-left:var(--sidebar-w-collapsed)}

/* ---------- Topbar ---------- */
.topbar{
  position:sticky;top:0;
  height:var(--topbar-h);
  display:flex;align-items:center;gap:16px;
  padding:0 24px;
  background:var(--bg-card);
  border-bottom:1px solid var(--border);
  z-index:50;
}
.menu-btn{display:none;background:none;border:none;color:var(--text);font-size:1.2rem;cursor:pointer}
.topbar-title{font-weight:600;font-size:1.05rem}
.topbar-actions{margin-left:auto;display:flex;gap:12px;align-items:center}
.theme-toggle{
  cursor:pointer;font-size:1.1rem;padding:6px 8px;border-radius:6px;
  background:var(--bg-hover);color:var(--text-dim);
  transition:background var(--transition);
}
.theme-toggle:hover{background:var(--border);color:var(--text)}

/* ---------- Pages ---------- */
.page{display:none;flex:1;overflow-y:auto}
.page.active{display:block}
.page-content{padding:28px;max-width:1440px;margin:0 auto}

.page-header{
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:14px;margin-bottom:24px;
}
.page-header h2{font-size:1.5rem;display:flex;align-items:center;gap:10px}
.header-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.header-controls select,
.search-input{
  padding:8px 14px;border-radius:var(--radius-sm);
  border:1px solid var(--border);
  background:var(--bg-card2);color:var(--text);
  font-size:.9rem;outline:none;
  transition:border var(--transition);
}
.search-input:focus,
.header-controls select:focus{border-color:var(--primary)}

.repo-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:20px;
  background:var(--bg-card2);border:1px solid var(--border);
  font-size:.85rem;color:var(--text-dim);
}

/* ---------- Landing ---------- */
.landing{
  display:flex;flex-direction:column;align-items:center;
  padding:60px 28px 40px;
  min-height:calc(100vh - var(--topbar-h));
}
.landing-hero{text-align:center;max-width:700px;margin-bottom:36px}
.hero-icon{font-size:3.2rem;color:var(--primary);margin-bottom:16px}
.landing-hero h1{font-size:2.2rem;line-height:1.25;font-weight:800}
.gradient-text{
  background:linear-gradient(135deg,var(--primary),var(--purple),var(--green));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-sub{color:var(--text-dim);margin-top:14px;font-size:1.05rem;line-height:1.6}

/* Input card */
.input-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;
  width:100%;max-width:760px;
  box-shadow:var(--shadow);
}
.input-row{display:flex;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.input-group{display:flex;flex-direction:column;gap:6px}
.input-group.grow{flex:1;min-width:260px}
.input-group label{font-size:.82rem;font-weight:600;color:var(--text-dim);display:flex;align-items:center;gap:6px}
.input-group label .optional{font-weight:400;opacity:.6}
.input-group input{
  padding:11px 14px;border-radius:var(--radius-sm);
  border:1px solid var(--border);background:var(--bg);
  color:var(--text);font-size:.95rem;outline:none;
  transition:border var(--transition);
}
.input-group input:focus{border-color:var(--primary)}

.btn-primary{
  width:100%;padding:13px;border:none;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,var(--primary-d),var(--primary));
  color:#fff;font-size:1rem;font-weight:600;
  cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;
  transition:opacity var(--transition),transform .15s;
}
.btn-primary:hover{opacity:.9;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}

.error-msg{
  margin-top:12px;padding:10px 14px;
  border-radius:var(--radius-sm);
  background:rgba(248,81,73,.12);border:1px solid var(--red);
  color:var(--red);font-size:.88rem;
}
.hidden{display:none!important}

/* Progress */
.progress-area{
  width:100%;max-width:760px;margin-top:28px;
}
.progress-bar-track{
  width:100%;height:8px;border-radius:4px;
  background:var(--border);overflow:hidden;
}
.progress-bar-fill{
  height:100%;width:0;border-radius:4px;
  background:linear-gradient(90deg,var(--primary-d),var(--primary));
  transition:width .4s ease;
}
.progress-steps{
  margin-top:14px;display:flex;flex-direction:column;gap:8px;
}
.progress-step{
  display:flex;align-items:center;gap:10px;
  font-size:.88rem;color:var(--text-dim);
}
.progress-step.done{color:var(--green)}
.progress-step.active{color:var(--primary)}
.progress-step i{width:18px;text-align:center}

/* Feature cards */
.features-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:18px;width:100%;max-width:960px;margin-top:48px;
}
.feature-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;
  transition:border-color var(--transition),transform var(--transition);
}
.feature-card:hover{border-color:var(--primary);transform:translateY(-3px)}
.feature-card i{font-size:1.6rem;color:var(--primary);margin-bottom:12px}
.feature-card h3{font-size:1rem;margin-bottom:6px}
.feature-card p{color:var(--text-dim);font-size:.85rem;line-height:1.5}

/* ---------- Summary Cards ---------- */
.summary-cards{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:16px;margin-bottom:28px;
}
.summary-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:22px;
  display:flex;align-items:center;gap:16px;
  transition:border-color var(--transition);
}
.summary-card:hover{border-color:var(--primary)}
.card-icon{
  width:50px;height:50px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;
}
.card-total .card-icon{background:rgba(88,166,255,.12);color:var(--primary)}
.card-vuln .card-icon{background:rgba(248,81,73,.12);color:var(--red)}
.card-dep .card-icon{background:rgba(210,153,34,.12);color:var(--yellow)}
.card-health .card-icon{background:rgba(63,185,80,.12);color:var(--green)}
.card-body{display:flex;flex-direction:column}
.card-value{font-size:1.7rem;font-weight:700;line-height:1.2}
.card-label{font-size:.8rem;color:var(--text-dim);margin-top:2px}

/* ---------- Charts ---------- */
.charts-row{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:16px;margin-bottom:28px;
}
.chart-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:22px;
}
.chart-card h3{font-size:1rem;margin-bottom:16px;font-weight:600}
.chart-container{height:220px;position:relative}

/* ---------- Tables ---------- */
.table-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:22px;margin-bottom:20px;
}
.table-card h3{font-size:1rem;margin-bottom:16px;font-weight:600;display:flex;align-items:center;gap:8px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.88rem}
thead th{
  text-align:left;padding:10px 14px;
  border-bottom:2px solid var(--border);
  color:var(--text-dim);font-weight:600;
  white-space:nowrap;
}
tbody td{
  padding:10px 14px;border-bottom:1px solid var(--border);
  white-space:nowrap;
}
tbody tr:hover{background:var(--bg-hover)}

/* Severity badges */
.badge{
  display:inline-block;padding:3px 10px;border-radius:12px;
  font-size:.78rem;font-weight:600;text-transform:uppercase;
}
.badge-critical{background:rgba(248,81,73,.15);color:var(--red)}
.badge-high{background:rgba(219,109,40,.15);color:var(--orange)}
.badge-medium{background:rgba(210,153,34,.15);color:var(--yellow)}
.badge-low{background:rgba(88,166,255,.15);color:var(--primary)}
.badge-safe{background:rgba(63,185,80,.12);color:var(--green)}
.badge-dep{background:rgba(210,153,34,.15);color:var(--yellow)}

/* Risk bar */
.risk-bar{
  width:80px;height:8px;border-radius:4px;
  background:var(--border);overflow:hidden;display:inline-block;
  vertical-align:middle;margin-right:6px;
}
.risk-bar-fill{height:100%;border-radius:4px}

/* ---------- Heatmap ---------- */
.heatmap-legend{
  display:flex;gap:18px;margin-bottom:16px;flex-wrap:wrap;font-size:.85rem;
  align-items:center;
}
.heatmap-legend span{display:flex;align-items:center;gap:6px}
.legend-box{width:16px;height:16px;border-radius:3px}
.legend-box.safe{background:var(--green)}
.legend-box.low{background:var(--primary)}
.legend-box.medium{background:var(--yellow)}
.legend-box.high{background:var(--orange)}
.legend-box.critical{background:var(--red)}

.heatmap-container{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;
  min-height:400px;overflow:auto;
}
.heatmap-container svg{display:block}

/* Treemap */
.treemap-cell{stroke:var(--bg);stroke-width:2px;cursor:pointer;transition:opacity .2s}
.treemap-cell:hover{opacity:.85}
.treemap-label{
  font-size:11px;fill:var(--text);
  pointer-events:none;
  text-shadow:0 1px 3px rgba(0,0,0,.6);
}

/* ---------- Deprecated List ---------- */
.deprecated-list{display:flex;flex-direction:column;gap:14px}
.dep-item{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:20px;
  transition:border-color var(--transition);
}
.dep-item:hover{border-color:var(--yellow)}
.dep-item-header{
  display:flex;align-items:center;gap:12px;
  margin-bottom:10px;flex-wrap:wrap;
}
.dep-item-header h4{font-size:1rem;font-weight:600}
.dep-item-header .badge{margin-left:auto}
.dep-msg{color:var(--text-dim);font-size:.85rem;margin-bottom:12px;line-height:1.5}
.dep-usage{
  background:var(--bg);border-radius:var(--radius-sm);
  padding:12px 16px;font-size:.83rem;
}
.dep-usage h5{color:var(--text-dim);font-size:.78rem;margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}
.dep-usage ul{list-style:none;display:flex;flex-direction:column;gap:4px}
.dep-usage li{
  display:flex;align-items:center;gap:8px;color:var(--text);
}
.dep-usage li i{color:var(--primary);font-size:.75rem}
.dep-usage li code{
  font-family:'Cascadia Code','Fira Code',monospace;
  background:var(--bg-card2);padding:2px 8px;border-radius:4px;font-size:.82rem;
}

/* ---------- Tree ---------- */
.tree-container{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;
  min-height:400px;overflow:auto;
}
.tree-container svg .node circle{cursor:pointer;transition:r .2s}
.tree-container svg .node text{font-size:12px;fill:var(--text)}
.tree-container svg .link{fill:none;stroke:var(--border);stroke-width:1.5px}

/* ---------- Tooltip ---------- */
.tooltip{
  position:fixed;
  padding:10px 14px;border-radius:var(--radius-sm);
  background:var(--bg-card);border:1px solid var(--border);
  box-shadow:var(--shadow);
  font-size:.82rem;max-width:300px;
  pointer-events:none;z-index:999;
  line-height:1.5;
}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  #main{margin-left:0!important}
  .menu-btn{display:block}
  .landing-hero h1{font-size:1.6rem}
  .input-row{flex-direction:column}
}

/* ---------- Animations ---------- */
@keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.page.active .page-content{animation:fadeIn .35s ease}
.landing{animation:fadeIn .4s ease}

@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.loading{animation:pulse 1.2s ease-in-out infinite}

/* Spinner */
.spinner{
  width:20px;height:20px;border:3px solid var(--border);
  border-top-color:var(--primary);border-radius:50%;
  animation:spin .8s linear infinite;display:inline-block;
}
@keyframes spin{to{transform:rotate(360deg)}}