/* ═══════════════════════════════════════════════════
   TOKENS & RESET  (identisch mit work.css / blog_style.css)
═══════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;600;700&family=Syne:wght@400;600;800&display=swap');

:root {
  --bg:      #0b0f17;
  --surface: #111827;
  --card:    #161d2e;
  --border:  #1e2d47;
  --accent:  #00d4ff;
  --accent2: #7c3aed;
  --accent3: #10b981;
  --warn:    #f59e0b;
  --text:    #e2e8f0;
  --muted:   #64748b;
  --grid:    rgba(0, 212, 255, 0.035);
}

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

html { scroll-behavior: smooth; font-size: 18px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  min-height: 100vh;
  overflow-x: hidden;
  cursor: none;
}

/* Grid line texture */
body::before {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* ═══════════════════════════════════════════════════
   CUSTOM CURSOR
═══════════════════════════════════════════════════ */
#cursor {
  position: fixed; top: 0; left: 0; z-index: 9999;
  width: 10px; height: 10px;
  background: var(--accent); border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: width .15s, height .15s, background .15s;
  box-shadow: 0 0 14px var(--accent);
}

#cursor-ring {
  position: fixed; top: 0; left: 0; z-index: 9998;
  width: 36px; height: 36px;
  border: 1px solid rgba(0, 212, 255, .35); border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: width .2s, height .2s, border-color .2s;
}

body.cursor-hover #cursor { width: 6px; height: 6px; background: #fff; }
body.cursor-hover #cursor-ring { width: 52px; height: 52px; border-color: rgba(0, 212, 255, .6); }

/* ═══════════════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════════════ */
@keyframes blink    { 0%,100%{opacity:1} 50%{opacity:.3} }
@keyframes fadeUp   { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
@keyframes tileIn   { from{opacity:0;transform:translateY(28px) scale(.97)} to{opacity:1;transform:translateY(0) scale(1)} }
@keyframes pulse    { 0%,100%{box-shadow:0 0 0 0 rgba(0,212,255,.35)} 50%{box-shadow:0 0 0 10px rgba(0,212,255,0)} }
@keyframes scanLine { 0%{top:0;opacity:.6} 100%{top:100%;opacity:0} }
@keyframes fillBar  { to{transform:scaleX(1)} }

/* ═══════════════════════════════════════════════════
   TOP BAR  (1:1 wie work.css)
═══════════════════════════════════════════════════ */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 3rem; height: 64px;
  background: rgba(11, 15, 23, .92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.topbar-left { display: flex; align-items: center; gap: 1.2rem; }

.logo-dot {
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 12px var(--accent);
  animation: blink 2s infinite;
}

.logo-text {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: 1rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
}

.topbar-meta { font-size: .8rem; color: var(--muted); letter-spacing: .05em; }

.topbar-right { display: flex; align-items: center; gap: 1.4rem; }

.status-pill {
  display: flex; align-items: center; gap: .5rem;
  font-size: .78rem; color: var(--accent3);
  background: rgba(16, 185, 129, .08);
  border: 1px solid rgba(16, 185, 129, .25);
  padding: .3rem .9rem; border-radius: 999px;
}

.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent3); animation: blink 1.5s infinite;
}

.topbar-nav { display: flex; gap: .35rem; }

.topbar-nav a {
  display: flex; align-items: center; gap: .5rem;
  font-size: .8rem; color: var(--muted);
  text-decoration: none; padding: .45rem 1rem;
  border-radius: 6px; border: 1px solid transparent;
  transition: all .18s; letter-spacing: .06em; cursor: none;
}

.topbar-nav a:hover,
.topbar-nav a.active {
  color: var(--accent);
  border-color: rgba(0, 212, 255, .2);
  background: rgba(0, 212, 255, .05);
}

.topbar-nav ion-icon { font-size: 1.1rem; }

/* ═══════════════════════════════════════════════════
   NAV DROPDOWN
═══════════════════════════════════════════════════ */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: flex; align-items: center; gap: .5rem;
  font-size: .8rem; color: var(--muted);
  text-decoration: none; padding: .45rem 1rem;
  border-radius: 6px; border: 1px solid transparent;
  transition: all .18s; letter-spacing: .06em; cursor: none;
}

.nav-dropdown-trigger:hover,
.nav-dropdown:hover .nav-dropdown-trigger {
  color: var(--accent);
  border-color: rgba(0,212,255,.2);
  background: rgba(0,212,255,.05);
}

.dropdown-arrow {
  font-size: .75rem;
  transition: transform .2s;
}

.nav-dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

/* invisible bridge fills the gap so mouse doesn't lose hover */
.nav-dropdown::after {
  content: '';
  position: absolute;
  top: 100%; left: -20px; right: -20px;
  height: 16px;
}

/* The dropdown menu — sits flush, no gap */
.nav-dropdown-menu {
  position: absolute; top: calc(100% + 14px); left: 50%;
  min-width: 260px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .4rem;
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(-6px);
  transition: opacity .18s, transform .18s;
  box-shadow: 0 16px 48px rgba(0,0,0,.5), 0 0 0 1px rgba(0,212,255,.08);
}

/* Arrow pointer at top */
.nav-dropdown-menu::before {
  content: '';
  position: absolute; top: -6px; left: 50%;
  width: 10px; height: 10px;
  background: var(--surface);
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  transform: translateX(-50%) rotate(45deg);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: flex; align-items: center; gap: .9rem;
  padding: .75rem .9rem;
  border-radius: 7px;
  text-decoration: none;
  color: var(--text);
  transition: all .15s; cursor: none;
  border: 1px solid transparent;
}

.nav-dropdown-item:hover {
  background: rgba(0,212,255,.05);
  border-color: rgba(0,212,255,.15);
}

.dropdown-item-icon {
  width: 36px; height: 36px; flex-shrink: 0;
  border-radius: 8px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}

.dropdown-item-title {
  font-size: .78rem; color: var(--text); font-weight: 600;
  font-family: 'Syne', sans-serif;
  margin-bottom: .15rem;
}

.dropdown-item-sub {
  font-size: .62rem; color: var(--muted); letter-spacing: .04em;
}

.nav-dropdown-item:hover .dropdown-item-title { color: var(--accent); }


/* ═══════════════════════════════════════════════════
   PAGE WRAPPER
═══════════════════════════════════════════════════ */
.page {
  position: relative; z-index: 1;
  padding-top: 64px;
  min-height: 100vh;
  display: flex; flex-direction: column;
}


/* ── DASH HEADER ── */
.dash-header {
  padding: 2.5rem 3rem 1.5rem;
  border-bottom: 1px solid var(--border);
  animation: fadeUp .4s ease both;
}
.dash-eyebrow {
  font-size: .68rem; color: var(--accent); letter-spacing: .2em;
  text-transform: uppercase; margin-bottom: .4rem;
  display: flex; align-items: center; gap: .6rem;
}
.dash-eyebrow::before { content: '//'; color: var(--muted); }
.dash-title { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 1.9rem; }
.dash-title span { color: var(--accent); }

/* ── TABS ── */
.tabs-bar {
  display: flex; gap: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  padding: 0 3rem;
}
.tab-btn {
  display: flex; align-items: center; gap: .5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: .75rem; color: var(--muted); letter-spacing: .08em;
  padding: .85rem 1.2rem;
  border: none; border-bottom: 2px solid transparent;
  background: transparent; cursor: none;
  transition: all .18s; white-space: nowrap;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: rgba(0,212,255,.04);
}
.tab-btn ion-icon { font-size: .95rem; }

/* ── TAB CONTENT ── */
.tab-content { display: none; padding: 2rem 3rem; animation: fadeUp .3s ease both; }
.tab-content.active { display: block; }

/* ── SETTINGS BAR (Dataset + Upload) ── */
.settings-bar {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 1rem;
  padding: 1.2rem 3rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.setting-group { display: flex; flex-direction: column; gap: .35rem; }
.setting-label { font-size: .6rem; color: var(--muted); text-transform: uppercase; letter-spacing: .12em; }

.ctrl-select, .ctrl-input {
  background: var(--card); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px;
  padding: .5rem .85rem; font-family: 'JetBrains Mono', monospace;
  font-size: .78rem; outline: none; cursor: none;
  transition: border-color .18s;
}
.ctrl-select:focus, .ctrl-input:focus { border-color: var(--accent); }
.ctrl-select option { background: var(--card); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem; font-weight: 600; letter-spacing: .08em;
  padding: .58rem 1.3rem; border-radius: 6px;
  border: 1px solid; cursor: none; transition: all .18s;
}
.btn-primary {
  background: var(--accent); color: var(--bg);
  border-color: var(--accent);
  box-shadow: 0 0 18px rgba(0,212,255,.28);
}
.btn-primary:hover { background: #33ddff; transform: translateY(-1px); box-shadow: 0 0 28px rgba(0,212,255,.45); }
.btn-ghost {
  background: transparent; color: var(--accent);
  border-color: rgba(0,212,255,.3);
}
.btn-ghost:hover { background: rgba(0,212,255,.07); transform: translateY(-1px); }
.btn-warn {
  background: transparent; color: var(--warn);
  border-color: rgba(245,158,11,.3);
}
.btn-warn:hover { background: rgba(245,158,11,.07); }
.btn.loading { opacity: .6; pointer-events: none; }

.spinner {
  width: 13px; height: 13px;
  border: 2px solid rgba(255,255,255,.2);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

/* ── PANEL ── */
.panel {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; overflow: hidden;
  animation: fadeUp .35s ease both;
}
.panel + .panel { margin-top: 1.2rem; }
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: .8rem 1.3rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.panel-title {
  font-size: .72rem; color: var(--accent); text-transform: uppercase;
  letter-spacing: .12em; font-weight: 600;
  display: flex; align-items: center; gap: .5rem;
}
.panel-badge {
  font-size: .6rem; padding: .18rem .55rem;
  background: rgba(0,212,255,.08); border: 1px solid rgba(0,212,255,.2);
  border-radius: 4px; color: var(--accent);
}
.panel-body { padding: 1.3rem; }

/* ── DATA TABLE ── */
.tbl-wrap { overflow-x: auto; }
.data-tbl { width: 100%; border-collapse: collapse; font-size: .72rem; }
.data-tbl thead tr { border-bottom: 1px solid var(--border); }
.data-tbl th { text-align: left; padding: .5rem .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-size: .6rem; font-weight: 400; }
.data-tbl td { padding: .6rem .8rem; border-bottom: 1px solid rgba(30,45,71,.4); }
.data-tbl tbody tr:hover td { background: rgba(0,212,255,.03); }
.dtype-badge {
  font-size: .58rem; padding: .12rem .5rem; border-radius: 3px;
  background: rgba(124,58,237,.1); border: 1px solid rgba(124,58,237,.2);
  color: #a78bfa;
}

/* ── STAT CARDS ── */
.stat-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px,1fr)); gap: 1rem; }
.stat-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 8px; padding: 1rem 1.1rem;
  position: relative; overflow: hidden; transition: border-color .2s;
}
.stat-card:hover { border-color: var(--accent); }
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--stat-color, linear-gradient(90deg, var(--accent2), var(--accent)));
}
.stat-label { font-size: .6rem; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; margin-bottom: .35rem; }
.stat-val { font-family: 'Syne', sans-serif; font-size: 1.5rem; font-weight: 800; color: var(--accent); }
.stat-sub { font-size: .62rem; color: var(--muted); margin-top: .15rem; }

/* ── NAN LIST ── */
.nan-list { display: flex; flex-wrap: wrap; gap: .6rem; }
.nan-item {
  display: flex; align-items: center; gap: .5rem;
  font-size: .7rem; padding: .3rem .75rem; border-radius: 5px;
  border: 1px solid var(--border); background: var(--surface);
}
.nan-item.has-nan { border-color: rgba(245,158,11,.3); color: var(--warn); }
.nan-item.no-nan  { color: var(--accent3); border-color: rgba(16,185,129,.2); }

/* ── CORRELATION HEATMAP ── */
.heatmap-wrap { overflow-x: auto; }
.heatmap-table { border-collapse: collapse; font-size: .68rem; }
.heatmap-table th { padding: .4rem .6rem; color: var(--muted); font-weight: 400; white-space: nowrap; }
.heatmap-table td {
  width: 56px; height: 48px; text-align: center;
  border: 1px solid rgba(30,45,71,.5);
  font-size: .65rem; font-weight: 600; transition: opacity .2s;
}

/* ── ML CONTROLS ── */
.ml-controls {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem;
  margin-bottom: 1.4rem;
}
.ml-control-group { display: flex; flex-direction: column; gap: .4rem; }
.ml-label { font-size: .62rem; color: var(--muted); text-transform: uppercase; letter-spacing: .12em; }

.ml-select, .ml-multiselect {
  background: var(--card); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px;
  padding: .5rem .85rem; font-family: 'JetBrains Mono', monospace;
  font-size: .78rem; outline: none; cursor: none;
  transition: border-color .18s; width: 100%;
}
.ml-select:focus, .ml-multiselect:focus { border-color: var(--accent); }
.ml-multiselect { height: 110px; }
.ml-multiselect option { padding: .25rem .5rem; }

/* Sliders */
.slider-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1rem 0; }
.slider-group { display: flex; flex-direction: column; gap: .4rem; }
.slider-label { font-size: .62rem; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; }
.slider-val { color: var(--accent); font-size: .75rem; margin-left: .4rem; }

input[type="range"] {
  -webkit-appearance: none; width: 100%; height: 4px;
  background: var(--border); border-radius: 2px; outline: none; cursor: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 14px; height: 14px;
  border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 8px rgba(0,212,255,.5); cursor: none;
}

/* ── COEFFICIENT TABLE ── */
.coef-table { width: 100%; border-collapse: collapse; font-size: .75rem; }
.coef-table th { text-align: left; padding: .5rem .8rem; color: var(--muted); font-size: .62rem; text-transform: uppercase; letter-spacing: .08em; border-bottom: 1px solid var(--border); }
.coef-table td { padding: .65rem .8rem; border-bottom: 1px solid rgba(30,45,71,.4); }
.coef-bar-wrap { display: flex; align-items: center; gap: .6rem; }
.coef-bar-track { flex: 1; height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; }
.coef-bar-fill { height: 100%; border-radius: 3px; background: linear-gradient(90deg, var(--accent2), var(--accent)); }

/* ── PREDICT FORM ── */
.predict-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap: .8rem; margin-bottom: 1.2rem; }
.predict-field { display: flex; flex-direction: column; gap: .35rem; }
.predict-label { font-size: .62rem; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; }
.predict-input {
  background: var(--card); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px;
  padding: .5rem .8rem; font-family: 'JetBrains Mono', monospace;
  font-size: .8rem; outline: none; cursor: text;
  transition: border-color .18s;
}
.predict-input:focus { border-color: var(--accent); }

.predict-result {
  margin-top: 1rem; padding: 1.2rem 1.5rem;
  background: rgba(0,212,255,.05); border: 1px solid rgba(0,212,255,.2);
  border-radius: 8px; font-size: .85rem;
  display: none;
}
.predict-result.visible { display: block; animation: fadeUp .3s ease both; }
.predict-result-val {
  font-family: 'Syne', sans-serif; font-weight: 800;
  font-size: 2rem; color: var(--accent); margin-top: .3rem;
}

/* ── CHART CANVAS ── */
.chart-wrap { position: relative; }
.chart-wrap canvas { width: 100% !important; }

/* ── INFO BOX ── */
.info-box {
  padding: .9rem 1.1rem; border-radius: 7px;
  background: rgba(0,212,255,.04); border: 1px solid rgba(0,212,255,.15);
  font-size: .72rem; color: var(--muted); line-height: 1.8; margin-top: 1rem;
}
.info-box strong { color: var(--text); }

/* ── EMPTY STATE ── */
.empty-state {
  padding: 3rem; text-align: center;
  color: var(--muted); font-size: .8rem; line-height: 2;
}
.empty-icon { font-size: 2.5rem; margin-bottom: .8rem; opacity: .5; }

/* ── FILE UPLOAD DROP ── */
.drop-zone {
  border: 2px dashed var(--border); border-radius: 10px;
  padding: 2.5rem; text-align: center; cursor: none;
  transition: border-color .2s, background .2s;
  font-size: .78rem; color: var(--muted);
}
.drop-zone.drag-over { border-color: var(--accent); background: rgba(0,212,255,.04); }
.drop-zone ion-icon { font-size: 2rem; display: block; margin: 0 auto .6rem; opacity: .5; }

/* ── NAN HANDLER ── */
.nan-method-row { display: flex; flex-wrap: wrap; gap: .5rem; margin: .8rem 0; }
.nan-chip {
  font-size: .68rem; padding: .3rem .8rem; border-radius: 5px;
  border: 1px solid var(--border); color: var(--muted); background: var(--card);
  cursor: none; transition: all .15s;
}
.nan-chip.active { border-color: var(--accent3); color: var(--accent3); background: rgba(16,185,129,.07); }

/* ═══════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════ */
.footer {
  margin-top: auto;
  padding: 1.1rem 3rem;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: .78rem; color: var(--muted);
  background: var(--surface);
  position: relative; z-index: 1;
}

.footer-right { display: flex; gap: 1.6rem; }
.footer a { color: var(--muted); text-decoration: none; cursor: none; }
.footer a:hover { color: var(--accent); }

/* ═══════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .section-wrap { padding-left: 2.5rem; padding-right: 2.5rem; }
  .hero { padding-left: 2.5rem; padding-right: 2.5rem; gap: 2.5rem; }
}

@media (max-width: 900px) {
  .topbar { padding: 0 1.2rem; }
  .topbar-meta { display: none; }
  .hero { grid-template-columns: 1fr; padding: 4rem 1.5rem 2rem; min-height: unset; }
  .hero-right { display: none; }
  .section-wrap { padding-left: 1.5rem; padding-right: 1.5rem; }
  .footer { padding: 1.1rem 1.5rem; }
  .tile-featured { grid-column: span 1; }
  .tile-featured .tile-inner { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  html { font-size: 16px; }
  .topbar { padding: 0 1rem; height: 56px; }
  .page { padding-top: 56px; }
  .topbar-nav a span { display: none; }
  .hero-name { font-size: 2.8rem; }
}