:root {
    --auth-bg-gradient: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4f46e5 100%);
    --auth-card-bg: rgba(255, 255, 255, 0.9);
    --auth-card-backdrop: blur(20px);
    --auth-input-bg: rgba(243, 244, 246, 0.8);
    --auth-text-color: #1f2937;
    --auth-primary: #4f46e5;
    --auth-primary-hover: #4338ca;
}

body.auth-page {
    background: var(--auth-bg-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--auth-text-color);
}

.auth-container {
    width: 100%;
    max-width: 420px;
    margin: 20px;
    perspective: 1000px;
}

.auth-card {
    background: var(--auth-card-bg);
    backdrop-filter: var(--auth-card-backdrop);
    -webkit-backdrop-filter: var(--auth-card-backdrop);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
}

.auth-card:hover {
    transform: translateY(-5px);
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 16px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    background: #fff;
    padding: 4px;
}

.auth-title {
    font-size: 24px;
    font-weight: 800;
    color: #111827;
    margin-bottom: 8px;
    letter-spacing: -0.025em;
}

.auth-subtitle {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.5;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #374151;
    margin-left: 4px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid transparent;
    background: var(--auth-input-bg);
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.2s ease;
    color: #1f2937;
    outline: none;
}

.form-input:focus {
    background: #fff;
    border-color: var(--auth-primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.auth-btn {
    width: 100%;
    padding: 14px;
    background: var(--auth-primary);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 12px;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.2);
}

.auth-btn:hover {
    background: var(--auth-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.3);
}

.auth-btn:active {
    transform: translateY(0);
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: #9ca3af;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-card {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Utils overrides */
.alert {
    border-radius: 12px;
    font-size: 14px;
    margin-bottom: 20px;
    padding: 12px 16px;
    border: 1px solid transparent;
}

.alert-danger {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fee2e2;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border-color: #bbf7d0;
}

.auth-help {
    font-size: 13px;
    color: #6b7280;
    margin-top: 6px;
    line-height: 1.4;
}