.auth-card {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    padding: 3rem;
    margin-top: 3rem;
    margin-bottom: 3rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-title {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: #94a3b8;
    font-size: 1rem;
}

.form-label {
    color: #cbd5e1;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-control {
    background: #0f172a;
    border: 1px solid #334155;
    color: #f1f5f9;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    transition: all 0.3s;
}

.form-control:focus {
    background: #0f172a;
    border-color: #667eea;
    color: #f1f5f9;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.section-divider {
    border-top: 1px solid #334155;
    margin: 2rem 0;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #f1f5f9;
    margin-bottom: 0.5rem;
}

.section-description {
    color: #94a3b8;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.btn-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    padding: 0.75rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s;
    margin-top: 1.5rem;
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.auth-link {
    text-align: center;
    margin-top: 1.5rem;
    color: #94a3b8;
}

.auth-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.auth-link a:hover {
    color: #764ba2;
}

.error-text {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.required-badge {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Tier Selection Styles */
.tier-selection-register {
    margin-bottom: 2.5rem;
}

.tier-card-register {
    background: rgba(255, 255, 255, 0.05);
    border: 3px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    padding: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.tier-card-register:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border-color: rgba(102, 126, 234, 0.5);
}

.tier-card-register.selected {
    border-color: #6366f1;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(139, 92, 246, 0.12) 100%);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    transform: translateY(-3px);
}

.tier-card-register.recommended {
    border-color: rgba(139, 92, 246, 0.6);
}

.tier-badge-register {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.8px;
}

.tier-badge-register.basic {
    background: linear-gradient(135deg, #9333ea 0%, #7c3aed 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(147, 51, 234, 0.4);
}

.tier-badge-register.full {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.tier-title-register {
    margin-top: 0.8rem;
    margin-bottom: 0.6rem;
    font-size: 1.6rem;
    font-weight: 700;
    color: #e2e8f0;
}

.tier-price-register {
    font-size: 1.3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.tier-description-register {
    color: #94a3b8;
    font-size: 0.95rem;
    margin-bottom: 1.2rem;
}

.tier-features-register {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
    flex-grow: 1;
}

.tier-features-register li {
    padding: 0.6rem 0;
    color: #cbd5e1;
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
}

.tier-features-register li i {
    color: #10b981;
    margin-right: 0.7rem;
    margin-top: 0.2rem;
    font-size: 1rem;
}

.tier-footer-register {
    margin-top: auto;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    text-align: center;
}

.tier-footer-register strong {
    color: #e2e8f0;
    font-size: 0.95rem;
}

.tier-footer-register small {
    color: #94a3b8;
    font-size: 0.85rem;
}

#basic-tier-section, 
#ssh-credentials-section {
    transition: all 0.3s ease;
}