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

:root {
    --primary: #1565C0;
    --primary-dark: #0D47A1;
    --primary-light: #64B5F6;
    --accent-gold: #C9A961;
    --accent-gold-light: #D4AF37;
    --azure: #4A9EFF;
    --success: #10b981;
    --danger: #ef4444;
    --text-primary: #36454F;
    --text-secondary: #6B7280;
    --text-tertiary: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #F0F8FF;
    --border: #CFD8DC;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 16px;
    --radius-sm: 12px;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #F0F8FF 0%, #E8F4FD 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    line-height: 1.6;
}

.login-container {
    width: 100%;
    max-width: 440px;
    margin: 0 auto;
}

.login-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

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

.logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.logo svg {
    width: 32px;
    height: 32px;
    color: white;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 400;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.2px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 16px;
    width: 20px;
    height: 20px;
    color: var(--text-tertiary);
    z-index: 1;
    pointer-events: none;
    transition: color 0.3s;
}

.form-input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    outline: none;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1), var(--shadow-sm);
}

.form-input:focus + .input-icon,
.input-wrapper:has(.form-input:focus) .input-icon {
    color: var(--primary);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.password-toggle {
    position: absolute;
    right: 16px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    transition: color 0.3s;
    z-index: 1;
}

.password-toggle:hover {
    color: var(--primary);
}

.password-toggle svg {
    width: 20px;
    height: 20px;
}

.eye-off-icon {
    position: absolute;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.forgot-password {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.forgot-password:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.btn-login {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    font-family: inherit;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-login:hover::before {
    width: 400px;
    height: 400px;
}

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

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

.login-footer {
    margin-top: 24px;
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.login-footer p {
    font-size: 14px;
    color: var(--text-secondary);
}

.register-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.register-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}


.hidden {
    display: none;
}

/* Адаптивные стили */
@media (max-width: 768px) {
    body {
        padding: 16px;
    }

    .login-card {
        padding: 32px 24px;
    }

    .login-header h1 {
        font-size: 24px;
    }

    .subtitle {
        font-size: 14px;
    }

    .logo {
        width: 56px;
        height: 56px;
        margin-bottom: 16px;
    }

    .logo svg {
        width: 28px;
        height: 28px;
    }

    .login-form {
        gap: 20px;
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 24px 20px;
    }

    .login-header h1 {
        font-size: 22px;
    }

    .form-input {
        padding: 12px 14px 12px 44px;
        font-size: 14px;
    }

    .input-icon {
        left: 14px;
        width: 18px;
        height: 18px;
    }

    .btn-login {
        padding: 12px 20px;
        font-size: 15px;
    }

}