/* ─── CSS-Variablen ──────────────────────────────────────────── */
:root {
    --bg-primary:   #0f1117;
    --bg-secondary: #161b27;
    --bg-card:      #1a2035;
    --bg-input:     #0f1117;
    --bg-hover:     #1e2a40;
    --border:       #2a3550;
    --border-light: #1e2a40;
    --accent:       #3b82f6;
    --accent-hover: #2563eb;
    --accent-green: #10b981;
    --accent-amber: #f59e0b;
    --accent-red:   #ef4444;
    --accent-purple:#8b5cf6;
    --text-primary: #e2e8f0;
    --text-secondary:#94a3b8;
    --text-muted:   #64748b;
    --sidebar-w:    220px;
    --sidebar-collapsed: 60px;
    --header-h:     64px;
    --radius:       8px;
    --radius-lg:    12px;
    --shadow:       0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg:    0 8px 32px rgba(0,0,0,0.4);
    --transition:   0.2s ease;
}

/* ─── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

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

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0.75rem;
    border-bottom: 1px solid var(--border);
    min-height: var(--header-h);
}
.sidebar-logo { display: flex; align-items: center; gap: 0.6rem; overflow: hidden; }
.logo-flag { font-size: 1.5rem; flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; overflow: hidden; }
.logo-name { font-size: 0.9rem; font-weight: 700; color: var(--text-primary); white-space: nowrap; }
.logo-sub  { font-size: 0.7rem; color: var(--text-muted); white-space: nowrap; }
.sidebar.collapsed .logo-text { display: none; }

.sidebar-toggle {
    background: none; border: none; color: var(--text-muted);
    font-size: 1.1rem; padding: 0.25rem; border-radius: 4px;
    flex-shrink: 0; transition: color var(--transition);
}
.sidebar-toggle:hover { color: var(--text-primary); }

.sidebar-nav { flex: 1; padding: 0.75rem 0; overflow-y: auto; }
.nav-section-label {
    font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.08em; color: var(--text-muted);
    padding: 0.75rem 1rem 0.25rem;
    white-space: nowrap; overflow: hidden;
}
.sidebar.collapsed .nav-section-label { opacity: 0; }

.nav-item {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.55rem 1rem; color: var(--text-secondary);
    border-radius: 0; transition: all var(--transition);
    white-space: nowrap; position: relative;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active { background: rgba(59,130,246,0.15); color: var(--accent); border-right: 2px solid var(--accent); }
.nav-icon { font-size: 1rem; flex-shrink: 0; width: 20px; text-align: center; }
.nav-label { font-size: 0.875rem; overflow: hidden; }
.sidebar.collapsed .nav-label { display: none; }
.nav-badge {
    margin-left: auto; background: var(--accent); color: #fff;
    font-size: 0.7rem; font-weight: 700; padding: 0.1rem 0.45rem;
    border-radius: 10px; min-width: 20px; text-align: center;
}
.sidebar.collapsed .nav-badge { display: none; }

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding: 0.75rem 0;
}
.scheduler-status {
    display: flex; align-items: center; gap: 0.5rem;
    padding: 0.4rem 1rem; font-size: 0.75rem; color: var(--text-muted);
}
.sidebar.collapsed .scheduler-status { display: none; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.status-dot.active   { background: var(--accent-green); box-shadow: 0 0 6px var(--accent-green); }
.status-dot.inactive { background: var(--text-muted); }
.logout-item { color: var(--text-muted); }
.logout-item:hover { color: var(--accent-red); background: rgba(239,68,68,0.08); }

/* ─── Hauptinhalt ────────────────────────────────────────────── */
.main-content {
    margin-left: var(--sidebar-w);
    flex: 1;
    padding: 2rem;
    transition: margin-left var(--transition);
    min-width: 0;
}
.main-content.sidebar-collapsed { margin-left: var(--sidebar-collapsed); }

/* ─── Page-Header ────────────────────────────────────────────── */
.page-header {
    display: flex; align-items: flex-start; justify-content: space-between;
    margin-bottom: 1.75rem; gap: 1rem; flex-wrap: wrap;
}
.page-header-left h1 { font-size: 1.6rem; font-weight: 700; color: var(--text-primary); }
.page-header-left p  { color: var(--text-muted); font-size: 0.875rem; margin-top: 0.2rem; }
.page-header-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

/* ─── Karten ─────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}
.card-title {
    font-size: 0.8rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 0.75rem;
}

/* ─── Stat-Karten ────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.25rem; }
.stat-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 0.5rem; }
.stat-value { font-size: 2rem; font-weight: 800; color: var(--text-primary); line-height: 1; }
.stat-sub   { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.35rem; }
.stat-value.accent  { color: var(--accent); }
.stat-value.green   { color: var(--accent-green); }
.stat-value.amber   { color: var(--accent-amber); }

/* ─── Grid-Layout ────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 900px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* ─── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.55rem 1rem; border-radius: var(--radius);
    font-size: 0.875rem; font-weight: 500; border: none;
    transition: all var(--transition); white-space: nowrap;
}
.btn-primary   { background: var(--accent);       color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success   { background: var(--accent-green); color: #fff; }
.btn-success:hover { opacity: 0.9; }
.btn-danger    { background: var(--accent-red);   color: #fff; }
.btn-danger:hover  { opacity: 0.9; }
.btn-secondary { background: var(--bg-hover); color: var(--text-secondary); border: 1px solid var(--border); }
.btn-secondary:hover { color: var(--text-primary); border-color: var(--text-muted); }
.btn-ghost     { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-hover); }
.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.8rem; }
.btn-icon { padding: 0.4rem; width: 32px; height: 32px; justify-content: center; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ─── Formular-Elemente ──────────────────────────────────────── */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 0.35rem; font-weight: 500; }
.form-control {
    width: 100%; padding: 0.6rem 0.85rem;
    background: var(--bg-input); border: 1px solid var(--border);
    border-radius: var(--radius); color: var(--text-primary); font-size: 0.9rem;
}
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(59,130,246,0.15); }
.form-control::placeholder { color: var(--text-muted); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 100px; }

/* ─── Filter-Leiste ──────────────────────────────────────────── */
.filter-bar {
    display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 0.75rem 1rem;
    margin-bottom: 1rem;
}
.filter-bar .form-control { flex: 1; min-width: 140px; }
.filter-search { min-width: 200px !important; }

/* ─── Tabelle ────────────────────────────────────────────────── */
.table-wrapper { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.table-info { padding: 0.6rem 1rem; font-size: 0.8rem; color: var(--text-muted); border-bottom: 1px solid var(--border-light); }
table { width: 100%; border-collapse: collapse; }
th {
    padding: 0.65rem 0.85rem; text-align: left;
    font-size: 0.7rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.06em; color: var(--text-muted);
    background: var(--bg-secondary); border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
td { padding: 0.7rem 0.85rem; border-bottom: 1px solid var(--border-light); font-size: 0.875rem; vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-hover); }
.td-actions { display: flex; gap: 0.3rem; }

/* ─── Badges ─────────────────────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center; gap: 0.25rem;
    padding: 0.2rem 0.55rem; border-radius: 20px;
    font-size: 0.75rem; font-weight: 600; white-space: nowrap;
}
.badge-new        { background: rgba(59,130,246,0.15);  color: #60a5fa; }
.badge-reviewed   { background: rgba(245,158,11,0.15);  color: #fbbf24; }
.badge-contacted  { background: rgba(139,92,246,0.15);  color: #a78bfa; }
.badge-interested { background: rgba(16,185,129,0.15);  color: #34d399; }
.badge-rejected   { background: rgba(239,68,68,0.15);   color: #f87171; }
.badge-private    { background: rgba(59,130,246,0.12);  color: #93c5fd; }
.badge-teacher    { background: rgba(16,185,129,0.12);  color: #6ee7b7; }
.badge-school     { background: rgba(245,158,11,0.12);  color: #fde68a; }
.badge-unknown    { background: rgba(100,116,139,0.15); color: #94a3b8; }

/* ─── Score-Bar ──────────────────────────────────────────────── */
.score-bar { display: flex; align-items: center; gap: 0.5rem; }
.score-track { flex: 1; height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; min-width: 50px; }
.score-fill  { height: 100%; border-radius: 3px; transition: width 0.4s ease; }
.score-num   { font-size: 0.8rem; font-weight: 700; min-width: 28px; text-align: right; }

/* ─── Workflow-Status-Buttons ────────────────────────────────── */
.workflow-btns { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.workflow-btn {
    padding: 0.3rem 0.7rem; border-radius: 20px; font-size: 0.78rem;
    font-weight: 600; border: 1px solid transparent; cursor: pointer;
    transition: all var(--transition); background: var(--bg-hover); color: var(--text-muted);
}
.workflow-btn:hover { color: var(--text-primary); }
.workflow-btn.active-new        { background: rgba(59,130,246,0.2);  color: #60a5fa; border-color: #3b82f6; }
.workflow-btn.active-reviewed   { background: rgba(245,158,11,0.2);  color: #fbbf24; border-color: #f59e0b; }
.workflow-btn.active-contacted  { background: rgba(139,92,246,0.2);  color: #a78bfa; border-color: #8b5cf6; }
.workflow-btn.active-interested { background: rgba(16,185,129,0.2);  color: #34d399; border-color: #10b981; }
.workflow-btn.active-rejected   { background: rgba(239,68,68,0.2);   color: #f87171; border-color: #ef4444; }

/* ─── Tabs ───────────────────────────────────────────────────── */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 1.25rem; }
.tab-btn {
    padding: 0.6rem 1rem; font-size: 0.875rem; background: none; border: none;
    color: var(--text-muted); border-bottom: 2px solid transparent;
    margin-bottom: -1px; transition: all var(--transition); cursor: pointer;
}
.tab-btn:hover  { color: var(--text-primary); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── Modal ──────────────────────────────────────────────────── */
.modal { display: none; position: fixed; inset: 0; z-index: 1000; align-items: center; justify-content: center; }
.modal.open { display: flex; }
.modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); }
.modal-box {
    position: relative; z-index: 1; background: var(--bg-card);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 1.75rem; width: 90%; max-width: 560px;
    max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-lg);
}
.modal-box.modal-lg { max-width: 720px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.25rem; }
.modal-header h3 { font-size: 1.1rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 1.25rem; padding: 0.2rem; }
.modal-close:hover { color: var(--text-primary); }
.modal-footer { display: flex; justify-content: flex-end; gap: 0.5rem; margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--border); }

/* ─── Toast ──────────────────────────────────────────────────── */
.toast-container { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 9999; display: flex; flex-direction: column; gap: 0.5rem; }
.toast {
    display: flex; align-items: center; gap: 0.6rem;
    padding: 0.7rem 1rem; border-radius: var(--radius);
    background: var(--bg-card); border: 1px solid var(--border);
    box-shadow: var(--shadow); font-size: 0.875rem; min-width: 260px;
    opacity: 0; transform: translateY(8px); transition: all 0.25s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-success { border-color: var(--accent-green); }
.toast-error   { border-color: var(--accent-red); }
.toast-warning { border-color: var(--accent-amber); }
.toast-icon { font-size: 1rem; flex-shrink: 0; }
.toast-success .toast-icon { color: var(--accent-green); }
.toast-error   .toast-icon { color: var(--accent-red); }
.toast-warning .toast-icon { color: var(--accent-amber); }
.toast-info    .toast-icon { color: var(--accent); }

/* ─── Leerer Zustand ─────────────────────────────────────────── */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--text-muted); }
.empty-state .empty-icon { font-size: 3rem; margin-bottom: 0.75rem; opacity: 0.4; }
.empty-state h3 { font-size: 1rem; color: var(--text-secondary); margin-bottom: 0.4rem; }
.empty-state p  { font-size: 0.875rem; }

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

/* ─── Fortschrittsbalken ─────────────────────────────────────── */
.progress-bar { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 3px; transition: width 0.4s ease; }

/* ─── Utility ────────────────────────────────────────────────── */
.text-muted    { color: var(--text-muted); }
.text-success  { color: var(--accent-green); }
.text-danger   { color: var(--accent-red); }
.text-amber    { color: var(--accent-amber); }
.text-accent   { color: var(--accent); }
.flex          { display: flex; }
.flex-center   { display: flex; align-items: center; }
.gap-1         { gap: 0.25rem; }
.gap-2         { gap: 0.5rem; }
.gap-3         { gap: 0.75rem; }
.mt-1          { margin-top: 0.25rem; }
.mt-2          { margin-top: 0.5rem; }
.mt-3          { margin-top: 0.75rem; }
.mb-1          { margin-bottom: 0.25rem; }
.mb-2          { margin-bottom: 0.5rem; }
.mb-3          { margin-bottom: 0.75rem; }
.truncate      { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.monospace     { font-family: 'Courier New', monospace; font-size: 0.85em; }