/* Center the card vertically and horizontally */
body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100dvh;
    padding: 20px;
    background: radial-gradient(circle at top right, #292524, var(--bg-body));
}

.auth-card {
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 0.6s ease-out;
}

/* Brand Styling */
.brand-icon {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--accent), #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 4px 10px var(--accent-glow));
}

/* Custom Tabs for Dark Theme */
.nav-tabs {
    border: none;
    background: rgba(0, 0, 0, 0.3);
    padding: 6px;
    border-radius: 14px;
    margin-bottom: 2rem;
    border: 1px solid var(--glass-border);
}

.nav-link {
    border: none !important;
    color: var(--text-muted) !important;
    border-radius: 10px !important;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    padding: 10px;
}

.nav-link:hover {
    color: var(--text-main) !important;
}

.nav-link.active {
    background-color: var(--accent) !important;
    color: #fff !important;
    box-shadow: 0 4px 12px var(--accent-glow);
}

/* Form Tweaks */
.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    margin-left: 4px;
}

.error-text {
    font-size: 0.75rem;
    color: #f87171;
    margin-top: 5px;
    margin-left: 4px;
    display: block;
}

/* Animation */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}