:root {
    --bg-main: #05070b;
    --bg-gradient1: #151a24;
    --bg-gradient2: #020617;
    --card-bg: #111827;
    --card-border: #1f2937;
    --accent: #22c55e;
    --accent-soft: rgba(34, 197, 94, 0.15);
    --accent-hover: #16a34a;
    --text-main: #e5e7eb;
    --text-muted: #9ca3af;
    --danger: #f97373;
    --danger-soft: rgba(248, 113, 113, 0.15);
    --input-bg: #020617;
    --input-border: #374151;
    --input-focus: #22c55e;
    --shadow-soft: 0 22px 45px rgba(0, 0, 0, 0.65);
    --radius-xl: 1.4rem;
}

* {
    box-sizing: border-box;
}

body.bg-light {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text-main);
    background:
        radial-gradient(circle at 10% 20%, rgba(34,197,94,0.18), transparent 55%),
        radial-gradient(circle at 90% 80%, rgba(59,130,246,0.18), transparent 60%),
        linear-gradient(145deg, var(--bg-gradient1), var(--bg-gradient2));
}

.container {
    width: 100%;
    max-width: 520px;
}

.row.justify-content-center {
    justify-content: center;
}

.col-lg-6 {
    width: 100%;
}

.card {
    background: radial-gradient(circle at 0 0, rgba(34,197,94,0.08), transparent 45%),
                var(--card-bg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(14px);
    overflow: hidden;
}

.card-body {
    padding: 2rem 1.75rem;
    position: relative;
    z-index: 1;
}

.card-body::before {
    content: "";
    position: absolute;
    inset: -40%;
    background:
        radial-gradient(circle at 0 0, rgba(34,197,94,0.07), transparent 40%),
        radial-gradient(circle at 100% 100%, rgba(56,189,248,0.08), transparent 45%);
    opacity: 0.9;
    pointer-events: none;
}

.card-body > * {
    position: relative;
    z-index: 2;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .25rem .75rem;
    border-radius: 999px;
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    background: var(--accent-soft);
    color: var(--accent);
    border: 1px solid rgba(34,197,94,0.4);
    margin-bottom: .8rem;
}

.badge-dot {
    width: .5rem;
    height: .5rem;
    border-radius: 999px;
    background: var(--accent);
    box-shadow: 0 0 0 4px rgba(34,197,94,0.35);
}

h1 {
    margin: .4rem 0 .3rem;
    font-size: 1.8rem;
    text-align: left;
    color: #fff;
}

.subtitle {
    margin: 0 0 1.4rem;
    color: var(--text-muted);
    font-size: .95rem;
    text-align: left;
}

.subtitle strong {
    color: var(--accent);
    font-weight: 600;
}

.alert {
    border-radius: .9rem;
    padding: .75rem 1rem;
    font-size: .9rem;
    margin-bottom: 1.1rem;
    /* display: flex; */
    align-items: flex-start;
    gap: .55rem;
    border: 1px solid transparent;
}

.alert-success {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: rgba(34,197,94,0.4);
}

.alert-danger {
    background: var(--danger-soft);
    color: var(--danger);
    border-color: rgba(248,113,113,0.5);
}

.alert strong {
    margin-right: .25rem;
}

/* Fehlerhafte Felder rot hervorheben */
.input-error {
    border-color: #ff4d4d !important;
    box-shadow: 0 0 8px rgba(255, 0, 0, 0.7) !important;
}

.d-grid.gap-2.mb-3 {
    margin-top: .4rem;
}

.btn-success.btn-lg,
.btn-primary {
    border: none;
    border-radius: 999px;
    padding: .75rem 1.7rem;
    font-size: .95rem;
    font-weight: 600;
    letter-spacing: .03em;
    cursor: pointer;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #020617;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    box-shadow: 0 18px 35px rgba(34,197,94,0.35);
    transition: transform .1s ease, box-shadow .1s ease, filter .1s ease;
    text-decoration: none;
}

.btn-success.btn-lg:hover,
.btn-primary:hover {
    transform: translateY(-1px);
    filter: brightness(1.05);
    box-shadow: 0 22px 40px rgba(34,197,94,0.45);
}

.btn-success.btn-lg:active,
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 10px 22px rgba(34,197,94,0.35);
}

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

.text-center.mb-4 img {
    border-radius: 1rem;
    box-shadow: 0 18px 35px rgba(0,0,0,0.6);
}

.form-label {
    font-size: .85rem;
    color: var(--text-muted);
    margin-bottom: .2rem;
}

.form-control {
    border-radius: .7rem;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-main);
    font-size: .95rem;
    padding: .6rem .75rem;
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease, background .15s ease, transform .05s ease;
}

.form-control::placeholder {
    color: #6b7280;
}

.form-control:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 1px rgba(34,197,94,0.6);
    background: #020617;
    transform: translateY(-1px);
}

.form-check-input {
    accent-color: var(--accent);
    width: 1rem;
    height: 1rem;
    margin-top: .2rem;
    background-color: var(--input-bg);
    border-color: var(--input-border);
}

.form-check-label {
    font-size: .8rem;
    color: var(--text-muted);
}

small.text-muted {
    font-size: .8rem;
}

.mb-4 {
    margin-bottom: 1.4rem !important;
}

.subtitle {
    margin: 0 0 1.4rem;
    color: var(--text-muted);
    font-size: .95rem;
}

.hint {
    font-size: .8rem;
    color: var(--text-muted);
    margin-top: .25rem;
}

.meta-info {
    font-size: .75rem;
    color: var(--text-muted);
    margin-top: .9rem;
}

.meta-info strong, .footer-note strong {
    color: var(--accent);
}

.footer-note {
    margin-top: 1.4rem;
    font-size: .75rem;
    color: var(--text-muted);
    text-align: center;
}

/* Text in Input-Feldern weiß */
.form-control {
    color: #ffffff !important;
}

/* Placeholder unverändert → NICHT weiß */
.form-control::placeholder {
    color: #6b7280 !important;
}

/* Checkbox weiß */
.form-check-input {
    background-color: #ffffff !important;
    border-color: #ffffff !important;
}

/* Checkbox angehakt – weiß mit grünem Häkchen */
.form-check-input:checked {
    background-color: #22c55e !important; /* dein WhatsApp/Accent-Grün */
    border-color: #22c55e !important;
}
    /* Mobile: Card fast volle Breite */
@media (max-width: 576px) {

    .container {
        padding-left: 8px !important;
        padding-right: 8px !important;
        max-width: 100% !important; /* Container full width */
    }

    .col-lg-6 {
        width: 100% !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
    }

    .card {
        border-radius: 1.1rem;
        margin-left: 0;
        margin-right: 0;
        width: 100%;
    }
}

@media (min-width: 600px) {
    .card-body {
        padding: 2.3rem 2.1rem;
    }
}