:root {
    --auth-primary: #2563eb;
    --auth-emerald: #10b981;
    --auth-bg: #f6f8fb;
    --auth-card: #ffffff;
    --auth-border: #e5e7eb;
    --auth-text: #0f172a;
    --auth-muted: #64748b;
}

.auth-body {
    min-height: 100vh;
    margin: 0;
    font-family: 'Poppins', system-ui, -apple-system, Segoe UI, sans-serif;
    color: var(--auth-text);
    background:
        linear-gradient(135deg, rgba(37, 99, 235, .08), rgba(16, 185, 129, .08)),
        var(--auth-bg);
}

.auth-shell {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
}

.auth-card {
    width: min(100%, 960px);
    overflow: hidden;
    border: 1px solid var(--auth-border);
    border-radius: 18px;
    background: var(--auth-card);
    box-shadow: 0 24px 70px rgba(15, 23, 42, .12);
}

.auth-card.auth-card-narrow {
    width: min(100%, 560px);
}

.auth-brand-panel {
    min-height: 100%;
    padding: 42px;
    color: #ffffff;
    background: linear-gradient(135deg, rgba(37, 99, 235, .96), rgba(16, 185, 129, .86)), #2563eb;
}

.auth-brand-mark {
    width: 54px;
    height: 54px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 22px;
    border-radius: 16px;
    color: #ffffff;
    background: rgba(255, 255, 255, .18);
    font-size: 25px;
}

.auth-brand-panel h1 {
    margin: 0 0 12px;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 0;
}

.auth-brand-panel p {
    max-width: 330px;
    margin: 0;
    color: rgba(255, 255, 255, .82);
    line-height: 1.7;
}

.auth-content,
.auth-content-narrow {
    padding: 38px;
}

.auth-kicker {
    display: inline-flex;
    padding: 5px 10px;
    margin-bottom: 12px;
    border-radius: 999px;
    background: #ecfdf5;
    color: #047857;
    font-size: 12px;
    font-weight: 800;
}

.auth-title {
    margin: 0;
    color: var(--auth-text);
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 0;
}

.auth-subtitle {
    margin: 8px 0 24px;
    color: var(--auth-muted);
    font-size: 14px;
    line-height: 1.6;
}

.auth-form .form-label {
    color: #334155;
    font-size: 13px;
    font-weight: 700;
}

.auth-form .input-group-text {
    width: 46px;
    justify-content: center;
    color: var(--auth-muted);
    background: #f8fafc;
    border-color: var(--auth-border);
}

.auth-form .form-control {
    min-height: 46px;
    border-color: var(--auth-border);
    color: var(--auth-text);
    font-size: 14px;
}

.auth-form .form-control:focus {
    border-color: rgba(37, 99, 235, .55);
    box-shadow: 0 0 0 .2rem rgba(37, 99, 235, .1);
}

.auth-password-toggle {
    cursor: pointer;
}

.auth-primary-btn {
    min-height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: 10px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--auth-primary), #1d4ed8);
    font-size: 14px;
    font-weight: 800;
    box-shadow: 0 12px 24px rgba(37, 99, 235, .24);
}

.auth-primary-btn:hover {
    color: #ffffff;
    box-shadow: 0 16px 30px rgba(37, 99, 235, .3);
}

.auth-link {
    color: var(--auth-primary);
    font-weight: 700;
    text-decoration: none;
}

.auth-link:hover {
    color: #1d4ed8;
}

.auth-card .btn-outline-secondary {
    color: var(--auth-muted);
    border-color: var(--auth-border);
}

.auth-card .btn-outline-secondary:hover,
.auth-card .btn-outline-secondary:focus {
    color: var(--auth-primary);
    background: rgba(37, 99, 235, .08);
    border-color: rgba(37, 99, 235, .35);
}

.auth-alert {
    border: 1px solid #bfdbfe;
    border-radius: 12px;
    background: #eff6ff;
    color: #1e40af;
    font-size: 13px;
}

.auth-error {
    border: 1px solid #fecaca;
    border-radius: 12px;
    background: #fef2f2;
    color: #b91c1c;
    font-size: 13px;
}

.auth-footer {
    margin-top: 20px;
    color: var(--auth-muted);
    font-size: 12px;
    text-align: center;
}

.auth-theme-toggle .bd-mode-toggle {
    z-index: 1055;
}

[data-bs-theme="dark"] .auth-body {
    --auth-bg: #151515;
    --auth-card: #171717;
    --auth-border: #252525;
    --auth-text: #f8fafc;
    --auth-muted: #94a3b8;
    background: #151515;
}

[data-bs-theme="dark"] .auth-card,
[data-bs-theme="dark"] .auth-content,
[data-bs-theme="dark"] .auth-content-narrow {
    background: var(--auth-card);
    color: var(--auth-text);
}

[data-bs-theme="dark"] .auth-title {
    color: var(--auth-text);
}

[data-bs-theme="dark"] .auth-subtitle,
[data-bs-theme="dark"] .auth-footer {
    color: var(--auth-muted);
}

[data-bs-theme="dark"] .auth-kicker {
    background: rgba(16, 185, 129, .16);
    color: #86efac;
}

[data-bs-theme="dark"] .auth-form .form-label {
    color: #e2e8f0;
}

[data-bs-theme="dark"] .auth-form .input-group-text,
[data-bs-theme="dark"] .auth-form .form-control {
    color: #f8fafc;
    background: #151515;
    border-color: #252525;
}

[data-bs-theme="dark"] .auth-form .form-control::placeholder {
    color: #64748b;
}

[data-bs-theme="dark"] .auth-alert {
    border-color: rgba(96, 165, 250, .28);
    background: rgba(37, 99, 235, .16);
    color: #bfdbfe;
}

[data-bs-theme="dark"] .auth-error {
    border-color: rgba(248, 113, 113, .28);
    background: rgba(220, 38, 38, .13);
    color: #fecaca;
}

[data-bs-theme="dark"] .auth-card .btn-outline-secondary {
    color: #e2e8f0;
    border-color: #334155;
}

[data-bs-theme="dark"] .auth-card .btn-outline-secondary:hover {
    color: #ffffff;
    background: #252525;
    border-color: #475569;
}

@media (max-width: 767.98px) {
    .auth-content,
    .auth-content-narrow {
        padding: 26px;
    }

    .auth-title {
        font-size: 23px;
    }
}