/* ========== CSS Custom Properties ========== */
:root {
    --sidebar-width: 240px;
    --sidebar-collapsed-width: 60px;
    --topbar-height: 56px;
    --transition: 0.22s ease;
    --radius: 8px;
    --radius-sm: 4px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Dark Mode (Standard) */
[data-theme="dark"] {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #1e2130;
    --bg-hover: #252840;
    --border: #2d3148;
    --text-primary: #e8eaf0;
    --text-secondary: #8b92b0;
    --text-muted: #565d7a;
    --accent: #6366f1;
    --accent-hover: #4f52d4;
    --accent-light: rgba(99, 102, 241, 0.15);
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --shadow: 0 2px 12px rgba(0,0,0,0.4);
}

/* Light Mode */
[data-theme="light"] {
    --bg-primary: #f4f6fb;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-hover: #f0f2f8;
    --border: #e2e6f0;
    --text-primary: #1a1d2e;
    --text-secondary: #5a6080;
    --text-muted: #9099b8;
    --accent: #6366f1;
    --accent-hover: #4f52d4;
    --accent-light: rgba(99, 102, 241, 0.08);
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #2563eb;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

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

html, body {
    height: 100%;
    font-family: var(--font);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
    transition: background-color var(--transition), color var(--transition);
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--radius-sm); }

button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--radius-sm);
}

/* ========== App Shell (Sidebar + Main) ========== */
.app-shell {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ========== Sidebar ========== */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width var(--transition);
    overflow: hidden;
    z-index: 200;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 16px;
    height: var(--topbar-height);
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 15px;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-logo { flex-shrink: 0; color: var(--accent); display: flex; align-items: center; }
.sidebar-title { transition: opacity var(--transition); }

.sidebar-footer {
    margin-top: auto;
    border-top: 1px solid var(--border);
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* Eingeklappter Zustand */
.sidebar-collapsed .sidebar { width: var(--sidebar-collapsed-width); }

.sidebar-collapsed .sidebar-title,
.sidebar-collapsed .sidebar-label {
    opacity: 0;
    pointer-events: none;
    width: 0;
    overflow: hidden;
}

/* ========== Navigation ========== */
.nav-menu { padding: 8px; flex: 1; overflow-y: auto; }
.nav-list { list-style: none; display: flex; flex-direction: column; gap: 2px; }

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
    transition: background-color var(--transition), color var(--transition);
    white-space: nowrap;
    overflow: hidden;
    text-decoration: none;
}

.nav-link:hover { background-color: var(--bg-hover); color: var(--text-primary); }
.nav-link.active { background-color: var(--accent-light); color: var(--accent); }

.nav-icon { flex-shrink: 0; }
.sidebar-label { transition: opacity var(--transition); }

.nav-section-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 12px 10px 4px;
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition);
}
.sidebar-collapsed .nav-section-label { opacity: 0; height: 0; padding: 0; }

/* ========== Theme-Toggle / Logout (Sidebar-Footer-Buttons) ========== */
.theme-toggle, .logout-form button {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 9px 10px;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font);
    transition: background-color var(--transition), color var(--transition);
    white-space: nowrap;
    overflow: hidden;
}

.theme-toggle:hover, .logout-form button:hover { background-color: var(--bg-hover); color: var(--text-primary); }

[data-theme="dark"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: none; }

.logout-form { margin: 0; }

/* ========== Main Wrapper ========== */
.main-wrapper { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }

/* ========== Topbar ========== */
.topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    height: var(--topbar-height);
    padding: 0 20px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    transition: background-color var(--transition), color var(--transition);
}

.sidebar-toggle:hover { background-color: var(--bg-hover); color: var(--text-primary); }

/* ========== Main Content ========== */
.main-content { flex: 1; overflow-y: auto; padding: 24px; }

/* ========== Cards ========== */
.card { background-color: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-header { padding: 16px 20px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 15px; }
.card-body { padding: 20px; }

/* ========== Stat Cards ========== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
}

.stat-icon { width: 44px; height: 44px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.stat-icon.accent { background-color: var(--accent-light); color: var(--accent); }
.stat-icon.success { background-color: rgba(34,197,94,0.12); color: var(--success); }
.stat-icon.warning { background-color: rgba(245,158,11,0.12); color: var(--warning); }
.stat-icon.danger { background-color: rgba(239,68,68,0.12); color: var(--danger); }

.stat-value { font-size: 28px; font-weight: 700; line-height: 1.1; }
.stat-label { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

/* ========== Badges ========== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.badge-success { background: rgba(34,197,94,0.15);  color: var(--success); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-danger  { background: rgba(239,68,68,0.15);  color: var(--danger); }
.badge-muted   { background: rgba(86,93,122,0.15);  color: var(--text-muted); }

/* ========== Tables ========== */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th {
    text-align: left;
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}
tbody td { padding: 12px 12px; border-bottom: 1px solid var(--border); color: var(--text-primary); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background-color: var(--bg-hover); }

/* ========== Forms ========== */
.form-group { margin-bottom: 16px; }
label { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 500; color: var(--text-secondary); }

.form-control {
    width: 100%;
    padding: 8px 12px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-light); }
.form-control::placeholder { color: var(--text-muted); }
.form-control:disabled { opacity: 0.6; cursor: not-allowed; }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 80px; }

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font);
    cursor: pointer;
    border: none;
    transition: background-color var(--transition), opacity var(--transition);
    text-decoration: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background-color: var(--accent); color: #fff; }
.btn-primary:hover { background-color: var(--accent-hover); color: #fff; }
.btn-secondary { background-color: var(--bg-hover); color: var(--text-primary); }
.btn-secondary:hover { background-color: var(--border); }
.btn-danger { background-color: var(--danger); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ========== Page Header ========== */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; gap: 12px; flex-wrap: wrap; }
.page-title { font-size: 22px; font-weight: 700; }

/* ========== Alerts ========== */
.alert { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 14px; }
.alert-error   { background: rgba(239,68,68,0.1);  color: var(--danger);  border-left: 3px solid var(--danger); }
.alert-success { background: rgba(34,197,94,0.1);  color: var(--success); border-left: 3px solid var(--success); }
.alert-info    { background: rgba(59,130,246,0.1); color: var(--info);    border-left: 3px solid var(--info); }

/* ========== Log Viewer ========== */
.log-container {
    font-family: 'Consolas', 'Cascadia Code', monospace;
    font-size: 12px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px;
    height: 500px;
    overflow-y: auto;
    line-height: 1.7;
}
.log-line { display: block; padding: 1px 0; }
.log-line:hover { background-color: var(--bg-hover); }
.log-inf { color: var(--text-secondary); }
.log-wrn { color: var(--warning); }
.log-err { color: var(--danger); }
.log-ftl { color: var(--danger); font-weight: 700; }
.log-dbg { color: var(--text-muted); }

/* ========== Blazor Error UI ========== */
#blazor-error-ui {
    background: var(--danger);
    color: white;
    padding: 10px 16px;
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    font-size: 14px;
}
#blazor-error-ui .reload { color: white; text-decoration: underline; margin: 0 8px; }
#blazor-error-ui .dismiss { background: none; border: none; color: white; cursor: pointer; float: right; font-size: 16px; }

/* ========== Validation ========== */
.field-validation-error { color: var(--danger); font-size: 12px; margin-top: 4px; display: block; }
.validation-summary-errors ul { margin: 0; padding-left: 20px; color: var(--danger); font-size: 13px; }
.input-validation-error { border-color: var(--danger) !important; }

/* ========== Login-Seite ========== */
.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}
.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 32px;
    width: 100%;
    max-width: 360px;
}
.login-title { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.login-subtitle { font-size: 13px; color: var(--text-secondary); margin-bottom: 20px; }

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100%;
        width: var(--sidebar-width);
        transform: translateX(-100%);
        transition: transform var(--transition);
        z-index: 300;
    }
    .app-shell:not(.sidebar-collapsed) .sidebar { transform: translateX(0); }
    .main-wrapper { margin-left: 0 !important; }
    .main-content { padding: 16px; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .stat-grid { grid-template-columns: 1fr; }
}