:root {
    --bg-page: #020617;
    --bg-gradient-1: #0b1120;
    --bg-gradient-2: #020617;
    --bg-glass: rgba(15, 23, 42, 0.82);
    --bg-surface: rgba(15, 23, 42, 0.96);
    --bg-surface-alt: rgba(15, 23, 42, 0.94);

    --color-primary: #38bdf8;
    --color-primary-strong: #0ea5e9;
    --color-primary-soft: rgba(56, 189, 248, 0.14);
    --color-accent: #a855f7;
    --color-ok: #22c55e;
    --color-warn: #f97316;

    --color-text: #e5e7eb;
    --color-text-soft: #9ca3af;
    --color-border-subtle: rgba(148, 163, 184, 0.42);

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-pill: 999px;

    --shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.85);
    --shadow-strong: 0 32px 80px rgba(8, 15, 32, 0.95);

    --transition-fast: 0.16s ease-out;
    --transition-med: 0.24s ease-out;

    --max-width-content: 1120px;
}

/* Basics */

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 14.5px;
    line-height: 1.7;
    color: var(--color-text);
    background:
        radial-gradient(circle at top left, rgba(56, 189, 248, 0.32), transparent 60%),
        radial-gradient(circle at bottom right, rgba(168, 85, 247, 0.26), transparent 60%),
        radial-gradient(circle at top right, rgba(59, 130, 246, 0.18), transparent 60%),
        linear-gradient(145deg, var(--bg-gradient-1) 0%, var(--bg-gradient-2) 55%, #020617 100%);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width-content);
}

/* Skip-Link */

.skip-link {
    position: absolute;
    left: -999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: -1;
}

.skip-link:focus-visible {
    position: fixed;
    left: 50%;
    top: 12px;
    transform: translateX(-50%);
    padding: 8px 16px;
    background: #f97316;
    color: #111827;
    border-radius: var(--radius-pill);
    box-shadow: 0 14px 40px rgba(15, 23, 42, 0.75);
    z-index: 2000;
}

/* Layout */

.page-main {
    min-height: calc(100vh - 140px);
}

.content-wrapper {
    padding-top: 22px;
    padding-bottom: 40px;
}

@media (min-width: 768px) {
    .content-wrapper {
        padding-top: 32px;
        padding-bottom: 60px;
    }
}

/* Header & Navigation (Glassmorphism) */

.app-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    backdrop-filter: blur(26px);
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.22), transparent 60%),
                radial-gradient(circle at top right, rgba(168, 85, 247, 0.16), transparent 60%),
                linear-gradient(to bottom, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.94), rgba(15, 23, 42, 0.9), transparent);
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.95);
}

.navbar {
    padding-top: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(51, 65, 85, 0.85);
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: 0.08em;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    text-transform: uppercase;
    color: #e5e7eb !important;
}

.navbar-brand-logo {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    background:
        conic-gradient(from 160deg, #22c55e, #0ea5e9, #a855f7, #22c55e);
    position: relative;
    box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.9), 0 12px 35px rgba(0, 0, 0, 0.85);
}

.navbar-brand-logo::after {
    content: "";
    position: absolute;
    inset: 3px;
    border-radius: inherit;
    background: radial-gradient(circle at 30% 20%, rgba(248, 250, 252, 0.85), transparent 60%);
}

/* Nav-Links */

.navbar-nav .nav-link {
    font-size: 13px;
    font-weight: 500;
    color: #9ca3af;
    padding: 0.42rem 0.9rem;
    border-radius: var(--radius-pill);
    position: relative;
    overflow: hidden;
    transition:
        background-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast),
        box-shadow var(--transition-fast);
}

.navbar-nav .nav-link::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0;
    background: radial-gradient(circle at top, rgba(56, 189, 248, 0.42), transparent 65%);
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.navbar-nav .nav-link:hover {
    color: #e5e7eb;
    background-color: rgba(15, 23, 42, 0.9);
    transform: translateY(-0.5px);
}

.navbar-nav .nav-link:hover::before {
    opacity: 1;
}

.navbar-nav .nav-link.active,
.navbar-nav .nav-link[aria-current="page"] {
    color: #f9fafb;
    background: linear-gradient(135deg, var(--color-primary-strong), var(--color-accent));
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.95);
}

/* Nav Right */

.navbar-text {
    font-size: 12.5px;
    color: rgba(226, 232, 240, 0.85);
}

/* Toggler */

.navbar-toggler {
    border-radius: var(--radius-pill);
    border-color: rgba(148, 163, 184, 0.8);
    padding: 4px 8px;
    background-color: rgba(15, 23, 42, 0.8);
}

.navbar-toggler-icon {
    filter: invert(1) contrast(1.4);
}

.navbar-toggler:focus-visible {
    outline: 2px solid #f97316;
    outline-offset: 3px;
}

/* Buttons */

.btn {
    font-weight: 500;
    border-radius: var(--radius-pill);
    padding: 0.46rem 1.15rem;
    font-size: 13.5px;
    border-width: 1px;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        box-shadow var(--transition-fast),
        transform var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
    border-color: var(--color-primary-strong);
    color: #f9fafb;
    box-shadow: 0 16px 38px rgba(8, 47, 73, 0.85);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-strong), var(--color-primary-strong));
    transform: translateY(-1px);
    box-shadow: 0 20px 45px rgba(8, 47, 73, 0.95);
}

.btn-outline-secondary,
.btn-outline-danger,
.btn-outline-primary {
    background-color: rgba(15, 23, 42, 0.8);
    border-color: rgba(148, 163, 184, 0.6);
    color: var(--color-text-soft);
}

.btn-outline-primary {
    border-color: rgba(56, 189, 248, 0.8);
    color: var(--color-primary-strong);
}

.btn-outline-primary:hover {
    background-color: var(--color-primary-soft);
    border-color: var(--color-primary-strong);
    color: #e0f2fe;
}

/* Link-Buttons */

.btn-link {
    color: var(--color-primary-strong);
    text-decoration: none;
    padding-left: 0;
    padding-right: 0;
}

.btn-link:hover {
    color: #f9fafb;
    text-decoration: underline;
}

/* Fokus-Styling */

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #f97316;
    outline-offset: 2px;
}

/* Cards */

.card {
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.35);
    background:
        radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 60%),
        radial-gradient(circle at bottom right, rgba(168, 85, 247, 0.12), transparent 60%),
        linear-gradient(135deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.96));
    box-shadow: var(--shadow-soft);
    color: var(--color-text);
    overflow: hidden;
    position: relative;
    transform: translateY(0) translateZ(0);
    transition:
        transform var(--transition-med),
        box-shadow var(--transition-med),
        border-color var(--transition-fast);
}

.card::before {
    content: "";
    position: absolute;
    inset: -30%;
    opacity: 0;
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 55%);
    transition: opacity var(--transition-med);
    pointer-events: none;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-strong);
    border-color: rgba(56, 189, 248, 0.55);
}

.card:hover::before {
    opacity: 1;
}

.card-body {
    padding: 1.4rem 1.55rem;
}

@media (min-width: 992px) {
    .card-body {
        padding: 1.6rem 1.85rem;
    }
}

.card-header {
    border-bottom: 1px solid rgba(30, 64, 175, 0.8);
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 60%);
}

/* Tabellen */

.table {
    --bs-table-bg: transparent;
    color: var(--color-text);
    font-size: 13px;
}

.table thead th {
    border-bottom-color: rgba(30, 64, 175, 0.8);
    color: var(--color-text-soft);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.08em;
}

.table tbody tr {
    border-bottom-color: rgba(30, 64, 175, 0.65);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.table tbody tr:hover {
    background-color: rgba(15, 23, 42, 0.9);
}

/* Badges & Alerts */

.badge {
    border-radius: var(--radius-pill);
    font-size: 11px;
    padding: 0.3rem 0.65rem;
}

.badge.bg-success {
    background-color: rgba(34, 197, 94, 0.12) !important;
    color: #bbf7d0;
}

.badge.bg-danger {
    background-color: rgba(248, 113, 113, 0.12) !important;
    color: #fecaca;
}

.alert {
    border-radius: var(--radius-md);
    border-width: 1px;
    font-size: 13px;
}

.alert-info {
    background-color: rgba(37, 99, 235, 0.1);
    border-color: rgba(59, 130, 246, 0.7);
    color: #dbeafe;
}

.alert-danger {
    background-color: rgba(185, 28, 28, 0.16);
    border-color: rgba(248, 113, 113, 0.75);
    color: #fee2e2;
}

/* Formulare */

.form-label {
    font-size: 13px;
    color: var(--color-text-soft);
    margin-bottom: 4px;
}

.form-control,
.form-select {
    font-size: 14px;
    border-radius: var(--radius-pill);
    border-color: rgba(148, 163, 184, 0.7);
    background-color: rgba(15, 23, 42, 0.9);
    color: var(--color-text);
}

textarea.form-control {
    border-radius: var(--radius-md);
}

.form-control::placeholder,
textarea.form-control::placeholder {
    color: rgba(148, 163, 184, 0.8);
}

.form-control:focus,
.form-select:focus {
    border-color: rgba(56, 189, 248, 0.95);
    box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.85);
    background-color: rgba(15, 23, 42, 0.98);
}

/* Footer */

.app-footer {
    border-top: 1px solid rgba(30, 64, 175, 0.85);
    padding: 18px 0 26px;
    font-size: 12px;
    color: var(--color-text-soft);
    background: linear-gradient(to top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.92), transparent);
}

.app-footer a {
    color: var(--color-text-soft);
    text-decoration: none;
}

.app-footer a:hover {
    color: var(--color-primary-strong);
    text-decoration: underline;
}

/* Typografie */

h1, .h1,
h2, .h2,
h3, .h3,
h4, .h4 {
    color: #e5e7eb;
    letter-spacing: 0.03em;
}

h1.h3, h1.h4, .h4 {
    font-weight: 650;
}

.text-muted {
    color: var(--color-text-soft) !important;
}

/* List-Group */

.list-group-item {
    background-color: rgba(15, 23, 42, 0.96);
    border-color: rgba(30, 64, 175, 0.8);
    color: var(--color-text);
    border-radius: var(--radius-md);
    margin-bottom: 6px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.list-group-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 35px rgba(15, 23, 42, 0.85);
    border-color: rgba(56, 189, 248, 0.6);
    background-color: rgba(15, 23, 42, 0.98);
}

/* Responsive Kleinzeug */

@media (max-width: 575.98px) {
    .navbar-brand span:last-child {
        display: none;
    }
}