:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    position: relative;
    overflow: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: backgroundMove 20s ease-in-out infinite;
}

@keyframes backgroundMove {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.auth-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 480px;
}

.auth-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
    padding: 3rem 2.5rem;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.auth-logo .icon-wrapper {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
    }
}

.auth-logo .icon-wrapper i {
    font-size: 2.5rem;
    color: white;
}

.auth-logo h3 {
    color: #0f172a;
    font-weight: 800;
    margin-bottom: 0.5rem;
    font-size: 1.75rem;
}

.auth-logo p {
    color: #64748b;
    margin-bottom: 0;
}

/* Form Styles */
.form-label {
    color: #334155;
    font-weight: 600;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.form-control, .form-select {
    border-radius: 12px;
    padding: 14px 18px;
    border: 2px solid #e2e8f0;
    transition: all 0.3s ease;
    font-size: 1rem;
    background: white;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    background: white;
}

.form-control.is-invalid {
    border-color: #ef4444;
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.invalid-feedback {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Checkbox */
.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid #cbd5e1;
    border-radius: 6px;
    cursor: pointer;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-check-label {
    color: #64748b;
    margin-left: 0.5rem;
    cursor: pointer;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    padding: 14px 24px;
    font-weight: 700;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn-primary:hover::before {
    transform: translateX(100%);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary-color));
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
}

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

/* Alerts */
.alert {
    border-radius: 12px;
    border: none;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(220, 38, 38, 0.1));
    color: #dc2626;
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(5, 150, 105, 0.1));
    color: #059669;
}

.alert ul {
    padding-left: 1.25rem;
}

/* Links */
a {
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

/* Divider */
hr {
    margin: 2rem 0;
    border-color: #e2e8f0;
    opacity: 0.5;
}

/* Test Info */
.test-info {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

/* Responsive */
@media (max-width: 576px) {
    body {
        padding: 1rem 0.5rem;
    }

    .auth-card {
        padding: 2rem 1.5rem;
    }

    .auth-logo .icon-wrapper {
        width: 70px;
        height: 70px;
    }

    .auth-logo .icon-wrapper i {
        font-size: 2rem;
    }

    .auth-logo h3 {
        font-size: 1.5rem;
    }
}