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

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

.background-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    background: white;
}

.circle-1 {
    width: 600px;
    height: 600px;
    top: -200px;
    right: -200px;
    animation: float 20s ease-in-out infinite;
}

.circle-2 {
    width: 400px;
    height: 400px;
    bottom: -100px;
    left: -100px;
    animation: float 15s ease-in-out infinite reverse;
}

.circle-3 {
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
    animation: float 25s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.login-container {
    background: white;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 
                0 0 0 1px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 440px;
    padding: 40px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.logo {
    margin-bottom: 16px;
    display: inline-block;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.login-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.subtitle {
    color: #6B7280;
    font-size: 14px;
    line-height: 1.5;
}

.version-badge {
    display: inline-block;
    margin-top: 12px;
    padding: 4px 12px;
    background: #EEF2FF;
    color: #4F46E5;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.login-form h2 {
    font-size: 20px;
    font-weight: 600;
    color: #1F2937;
    margin-bottom: 8px;
}

.form-description {
    color: #6B7280;
    font-size: 14px;
    margin-bottom: 24px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

.input-wrapper input {
    width: 100%;
    padding: 12px 12px 12px 44px;
    border: 2px solid #E5E7EB;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.2s;
    outline: none;
    color: #1F2937;
    background: #F9FAFB;
}

.input-wrapper input:focus {
    border-color: #4F46E5;
    background: white;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.input-wrapper input::placeholder {
    color: #9CA3AF;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s;
    margin-top: 8px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(79, 70, 229, 0.4);
}

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

.error-message {
    display: none;
    background: #FEF2F2;
    color: #DC2626;
    padding: 12px;
    border-radius: 8px;
    margin-top: 16px;
    text-align: center;
    font-size: 14px;
    border: 1px solid #FECACA;
}

.login-footer {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #E5E7EB;
    text-align: center;
}

.footer-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 12px;
    color: #9CA3AF;
    margin-bottom: 12px;
}

.separator {
    color: #D1D5DB;
}

.footer-links {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.footer-links a {
    color: #6B7280;
    text-decoration: none;
    font-size: 12px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #4F46E5;
}

/* Адаптивность */
@media (max-width: 480px) {
    .login-container {
        margin: 16px;
        padding: 24px;
        border-radius: 16px;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
    
    .btn-login {
        padding: 12px;
    }
}