:root {
    /* Основные цвета банка */
    --primary-color: #1a365d;
    --primary-light: #2d5a87;
    --primary-dark: #0f1419;
    --secondary-color: #3182ce;
    --accent-color: #e53e3e;
    --success-color: #38a169;
    --warning-color: #ed8936;
    --info-color: #3182ce;
    
    /* Цвета фона */
    --background-color: #f7fafc;
    --background-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: #ffffff;
    --card-bg-premium: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    
    /* Цвета текста */
    --text-color: #2d3748;
    --text-secondary: #718096;
    --text-light: #a0aec0;
    
    /* Тени и границы */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    
    /* Анимации */
    --transition-fast: all 0.2s ease-in-out;
    --transition-normal: all 0.3s ease-in-out;
    --transition-slow: all 0.5s ease-in-out;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

/* Улучшенная форма входа */
.wrapper_login {
    text-align: center;
    background: var(--card-bg-premium);
    padding: 40px 30px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 420px;
    width: 100%;
    margin: auto;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.wrapper_login::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--background-gradient);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.title_login h2 {
    color: var(--primary-color);
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    position: relative;
}

.title_login h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--background-gradient);
    border-radius: 2px;
}

.form_login form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form_login .input-group {
    position: relative;
    text-align: left;
}

.form_login label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
    letter-spacing: 0.3px;
}

.form_login input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    font-size: 16px;
    background: #ffffff;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.form_login input:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
    transform: translateY(-2px);
}

.form_login input:hover {
    border-color: var(--primary-light);
}

.form_login button {
    width: 100%;
    padding: 16px 20px;
    background: var(--background-gradient);
    color: #ffffff;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-md);
}

.form_login button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.form_login button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.form_login button:hover::before {
    left: 100%;
}

.form_login button:active {
    transform: translateY(-1px);
}

/* Адаптивность */
@media (max-width: 480px) {
    .wrapper_login {
        margin: 20px 15px;
        padding: 30px 20px;
        max-width: none;
    }

    .title_login h2 {
        font-size: 24px;
    }

    .form_login input,
    .form_login button {
        font-size: 16px;
        padding: 14px 16px;
    }
}

/* Дополнительные утилитарные классы */
.btn-primary {
    background: var(--background-gradient);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: #ffffff;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.card {
    background: var(--card-bg-premium);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Анимация загрузки */
@keyframes slideInFromTop {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.animate-slide-in {
    animation: slideInFromTop 0.6s ease-out;
}

.animate-fade-in {
    animation: fadeInUp 0.8s ease-out;
}