/* EEG-Plattform — Globales Stylesheet */
:root {
  --green: #16a34a;
  --green-dark: #15803d;
  --green-light: #dcfce7;
  --blue: #2563eb;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --white: #fff;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
}

/* ─── Dark Mode ──────────────────────────────────── */
[data-theme="dark"] {
  --white: #1e293b;
  --gray-50: #0f172a;
  --gray-100: #1e293b;
  --gray-200: #334155;
  --gray-600: #94a3b8;
  --gray-700: #cbd5e1;
  --gray-800: #f1f5f9;
  --green-light: #14532d;
  --shadow: 0 1px 3px rgba(0,0,0,.4), 0 1px 2px rgba(0,0,0,.3);
}
[data-theme="dark"] footer { background: #020617; color: #94a3b8; }
[data-theme="dark"] .hero { background: linear-gradient(135deg, #15803d 0%, #065f46 100%); }
[data-theme="dark"] .alert-error   { background: #450a0a; color: #fca5a5; border-color: #7f1d1d; }
[data-theme="dark"] .alert-success { background: #14532d; color: #86efac; border-color: #166534; }
[data-theme="dark"] .alert-warning { background: #451a03; color: #fcd34d; border-color: #92400e; }
[data-theme="dark"] .badge-green  { background: #14532d; color: #86efac; }
[data-theme="dark"] .badge-yellow { background: #451a03; color: #fcd34d; }
[data-theme="dark"] .badge-red    { background: #450a0a; color: #fca5a5; }
[data-theme="dark"] .badge-gray   { background: #1e293b; color: #94a3b8; }
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea { background: #0f172a; color: #f1f5f9; border-color: #334155; }
[data-theme="dark"] code { background: #0f172a; color: #86efac; }
[data-theme="dark"] dialog { background: #1e293b; color: #f1f5f9; border-color: #334155; }
[data-theme="dark"] #theme-toggle { color: #f1f5f9; }

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.5;
}

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

/* ─── Layout ─────────────────────────────────────── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

/* ─── Navbar ─────────────────────────────────────── */
.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: .75rem 0;
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow);
}
.navbar .inner { display: flex; align-items: center; justify-content: space-between; }
.navbar .logo { font-weight: 700; font-size: 1.25rem; color: var(--green); }
.navbar nav a {
  margin-left: 1.5rem;
  color: var(--gray-600);
  font-size: .9rem;
}
.navbar nav a:hover { color: var(--green); }

/* ─── Buttons ────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .5rem 1.2rem;
  border-radius: var(--radius);
  border: none; cursor: pointer;
  font-size: .9rem; font-weight: 500;
  transition: background .15s;
}
.btn-primary   { background: var(--green); color: var(--white); }
.btn-primary:hover { background: var(--green-dark); }
.btn-secondary { background: var(--gray-100); color: var(--gray-800); border: 1px solid var(--gray-200); }
.btn-secondary:hover { background: var(--gray-200); }
.btn-danger    { background: #dc2626; color: var(--white); }
.btn-danger:hover { background: #b91c1c; }
.btn-lg { padding: .75rem 1.75rem; font-size: 1rem; }

/* ─── Cards ──────────────────────────────────────── */
.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

/* ─── Forms ──────────────────────────────────────── */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: .875rem; font-weight: 500; margin-bottom: .35rem; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .5rem .75rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: .9rem;
  transition: border-color .15s;
}
.form-group input:focus,
.form-group select:focus { outline: none; border-color: var(--green); }

/* ─── Alerts ─────────────────────────────────────── */
.alert { padding: .875rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: .9rem; }
.alert-error   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: var(--green-light); color: #166534; border: 1px solid #86efac; }
.alert-warning { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }

/* ─── Tables ─────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; }
th, td { padding: .75rem 1rem; text-align: left; border-bottom: 1px solid var(--gray-200); font-size: .9rem; }
th { font-weight: 600; background: var(--gray-50); }
tr:hover td { background: var(--gray-50); }

/* ─── Badges ─────────────────────────────────────── */
.badge {
  display: inline-block; padding: .2rem .6rem;
  border-radius: 999px; font-size: .75rem; font-weight: 600;
}
.badge-green  { background: var(--green-light); color: #166534; }
.badge-yellow { background: #fffbeb; color: #92400e; }
.badge-red    { background: #fef2f2; color: #991b1b; }
.badge-gray   { background: var(--gray-100); color: var(--gray-600); }

/* ─── Gauge (Autarkie) ───────────────────────────── */
.gauge-wrap { text-align: center; }
.gauge-wrap canvas { max-width: 200px; }
.gauge-label { font-size: 2rem; font-weight: 700; color: var(--green); }
.gauge-sub   { font-size: .85rem; color: var(--gray-600); }

/* ─── Grid ───────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ─── Stat-Kacheln ───────────────────────────────── */
.stat-card { text-align: center; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--green); }
.stat-label { font-size: .8rem; color: var(--gray-600); margin-top: .25rem; }

/* ─── Portal Sidebar ─────────────────────────────── */
.portal-layout { display: flex; min-height: calc(100vh - 60px); }
.sidebar {
  width: 220px; flex-shrink: 0;
  background: var(--white);
  border-right: 1px solid var(--gray-200);
  padding: 1.5rem 1rem;
  transition: width .2s ease, padding .2s ease;
  overflow: hidden;
}
.sidebar.collapsed {
  width: 52px;
  padding: 1.5rem .4rem;
}
.sidebar-label {
  font-size:.75rem; font-weight:600; color:#9ca3af;
  text-transform:uppercase; margin-bottom:.75rem;
  white-space: nowrap; overflow: hidden;
  transition: opacity .15s;
}
.sidebar.collapsed .sidebar-label { opacity: 0; height: 0; margin: 0; }
.sidebar a {
  display: flex; align-items: center; gap: .6rem;
  padding: .5rem .55rem;
  border-radius: var(--radius);
  color: var(--gray-600); font-size: .9rem; margin-bottom: .25rem;
  white-space: nowrap;
}
.sidebar a:hover, .sidebar a.active { background: var(--green-light); color: var(--green); }
.sidebar-icon { flex-shrink: 0; font-size: 1.1rem; line-height: 1; }
.sidebar-text { transition: opacity .15s; }
.sidebar.collapsed .sidebar-text { opacity: 0; width: 0; overflow: hidden; }
.portal-content { flex: 1; padding: 2rem; min-width: 0; }

/* ─── Profil-Dropdown ────────────────────────────── */
.profile-menu { position: relative; }
.profile-btn {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: var(--gray-100); border: 2px solid var(--gray-200);
  border-radius: 9999px; padding: 0;
  cursor: pointer; font-size: 1.2rem; line-height: 1;
  transition: background .15s, border-color .15s;
}
.profile-btn:hover { background: var(--green-light); border-color: var(--green); }
.profile-avatar { line-height: 1; }
.profile-dropdown {
  display: none; position: absolute; right: 0; top: calc(100% + 6px);
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); box-shadow: 0 4px 16px rgba(0,0,0,.1);
  min-width: 190px; z-index: 200; padding: .4rem;
}
.profile-dropdown.open { display: block; }
.profile-dropdown a {
  display: block; padding: .5rem .75rem;
  border-radius: 6px; font-size: .875rem; color: var(--gray-700);
  white-space: nowrap;
}
.profile-dropdown a:hover { background: var(--gray-100); }

/* ─── Hero (Landingpage) ─────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--green) 0%, #059669 100%);
  color: var(--white);
  padding: 5rem 0;
  text-align: center;
}
.hero h1 { font-size: 2.75rem; font-weight: 800; margin-bottom: 1rem; }
.hero p  { font-size: 1.2rem; opacity: .9; margin-bottom: 2rem; }
.hero .btn-white {
  background: var(--white); color: var(--green);
  font-weight: 700;
}
.hero .btn-outline {
  background: transparent; color: var(--white);
  border: 2px solid rgba(255,255,255,.6);
  margin-left: 1rem;
}
.hero .btn-outline:hover { background: rgba(255,255,255,.1); }

/* ─── Features ───────────────────────────────────── */
.features { padding: 5rem 0; }
.feature-icon {
  width: 48px; height: 48px;
  background: var(--green-light);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 1rem;
}

/* ─── Footer ─────────────────────────────────────── */
footer {
  background: var(--gray-800); color: var(--gray-200);
  padding: 2rem 0; font-size: .85rem; text-align: center;
  margin-top: 4rem;
}

/* ─── Upload-Zone ────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius);
  padding: 3rem;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s;
}
.upload-zone:hover { border-color: var(--green); }

/* ─── Live-Search ────────────────────────────────── */
.search-wrap { position: relative; max-width: 480px; margin: 0 auto 2rem; }
.search-wrap input { font-size: 1rem; padding: .75rem 1rem; }
.search-results {
  position: absolute; width: 100%; top: 100%;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: 0 0 var(--radius) var(--radius);
  z-index: 50;
}
.search-results li {
  padding: .6rem 1rem; cursor: pointer; list-style: none;
}
.search-results li:hover { background: var(--gray-50); }

/* ─── Chart Container ────────────────────────────── */
.chart-container { position: relative; height: 260px; }